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  1. Trailer Tires and Wheels
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  5. 185/80-13
  6. Load Range D
Loadstar ST185/80D13 Bias Trailer Tire - Load Range D

Loadstar ST185/80D13 Bias Trailer Tire - Load Range D

Item # AM1ST79
Our Price: $111.78
Trailer Tires and Wheels
Shipping Weight: 19 lbs
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Kenda Trailer Tires and Wheels - AM1ST79
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Top-quality, bias trailer tire has been rigorously tested to ensure that it exceeds Department of Transportation standards. This tire fits 13" wheels; its maximum load is 1,710 lbs at 65 psi. Great Prices for the best trailer tires and wheels from Kenda. Loadstar ST185/80D13 Bias Trailer Tire - Load Range D part number AM1ST79 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (3262)
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Kenda Trailer Tires and Wheels - AM1ST79

  • Tire Only
  • 13 Inch
  • 185/80-13
  • Load Range D
  • Bias Ply Tire
  • M - 81 mph
  • Kenda

Top-quality, bias trailer tire has been rigorously tested to ensure that it exceeds Department of Transportation standards. This tire fits 13" wheels; its maximum load is 1,710 lbs at 65 psi.


Features:

  • Flatter tread offers improved stability for excellent handling
  • Special trailer (ST) tire has sturdy sidewalls so that it can handle heavy loads
    • Created specifically for trailers and not intended for use on other vehicles
  • Advanced rubber compound
    • Longer tread wear
    • Low rolling resistance for smooth ride
  • Bias tire meets DOT requirements


Specs:

  • Fits: 13" x 4-1/2", 13" x 5" and 13" x 5-1/2" wheels
  • Tire size: ST185/80D13
    • Section width: 7.2"
    • Outer diameter: 24.4"
  • Capacity:
    • Load range: D
    • Ply rating: 8
    • Maximum load:
      • Single tire: 1,710 lbs at 65 psi
      • Dual tires: 1,520 lbs at 65 psi
  • Maximum speed: 81 mph (speed rating M)
  • 5-Year limited warranty
  • 1-Year worry-free guarantee


1-Year Worry-Free Guarantee

This tire has a 1-year worry-free guarantee. If within the first 12 months the tire is damaged in any way, it will be replaced at no charge.


Bias Tires vs. Radial Tires

Bias vs. radial tire graphic

Bias ply tires are designed for off-road or agricultural applications. They are built with thick, durable nylon cords that are positioned at a 30- to 45-degree angle to the direction of travel. The layers alternate in a crisscross pattern, making the sidewalls stiffer so that the entire tire is able to flex easily. As a result, the tire provides a smooth ride and improved handling when trailering on uneven surfaces.



1ST79 Loadstar K550 Bias Tire - LR D





Customer Satisfaction Score:


Customer Reviews

Loadstar ST185/80D13 Bias Trailer Tire - Load Range D - AM1ST79

Average Customer Rating:  4.8 out of 5 stars   (3261 Customer Reviews)

Top-quality, bias trailer tire has been rigorously tested to ensure that it exceeds Department of Transportation standards. This tire fits 13" wheels; its maximum load is 1,710 lbs at 65 psi.

by:

This is the first time I have ordered trailer tires from Etrailer and I did not know what to expect with regard to service and product quality. The last pair of tires I had on my pontoon boat trailer were 185/80R13 Marathon tires but according to the specifications, the Etrailer 185/80R13 tires had a better load rating and higher safe speed rating than my old Marathon tires. My Etraier tires also have a 2/2018 date of manufacturing which was also a plus.

Pat

9/7/2019

Great ... I sold my pontoon boat recently but the tires exceeded my expectations. I now go to Etrailer for tire recommendation and technical advise. I recently bought a spare tire and rim for my new Venture trailer from Etrailer. Thanks, PW



by:

feel stable and smooth.... wearing good so far after 1000 miles.... I went one size bigger and one up on load and speed rating than my oem pop up tires and I am glad I did... much better ride..



by:

Tires arrived quickly, package well, and best of all they are only two months old. Will evaluate tires as time goes by, but etrailer.com did a great job of fulfilling my order.

John D.

7/7/2015

After having these tires for a year, I must say I am pleased. They are wearing well, hold air great, and offer a good ride.



by:

It came crushed, but the tire installer was able to mount it with some effort on the rim,



by:

Great Service!

Speedy fast delivery
and excellent communication!

Highly recommend them!!!!!



by:

These seem to last a lot longer than the load C tires. They have worked great on my hunting boat trailer.

Scuba K.

7/25/2017

Tire is running great and wear just like it should.



by:

After researching tires for several days, watching etrailer videos and reading all the Q&A's, I decided on this particular size and brand because they're excellent in quality and couldn't find any local dealer that carried them. I ordered the tires, steel wheels and baby moon hubs all together to go on a 15' Scotty camper.
They look great and I would recommend them to anyone who needs a smaller, yet durable tire.



by:

These tires are great! Not too many miles on them yet but they ride well. The load range of these tires is great too. The awesome part of this purchase was the tires shipped the same day I ordered them and they arrived in four days! Great customer service!



by:

Excellent service!! The order came in very fast and I would highly recommend anyone to order there tires for you guys in a heartbeat. The product was shipped in in individual boxes so nothing else could touch the tires and I was in pressed by that also.



by:

Got new loadstar tires for my coleman Fleetwood Rio they look great and ride even better. The ride over all is smooth and stable.



by:

I can't really evaluate the tires yet...The arrived in only 2 days and the boxes they were shipped in looked brand new!! Unpacked one tire...appearance was excellent. This is the second set of "Loadstar ST185/80D13 Bias Trailer Tire - Load Range D" that I have purchased and will write more in a couple of weeks after I get them mounted. Thanks for the great service and unbelievably fast shipping!
Great service E-Trailer!!



by:

Excellent order with fast Delivery and they exemplify my rims and trailer.



by:

I used these on my ATV trailer...The Load Range D makes a huge difference over the Load range C sidewalls. No more bouncing or swaying from sidewall flex. It really improved the ride quality of the trailer and are much tougher than most other trailer tires offered for a 13 inch rim.



by:

The replacement tires were for my boat trailer, and have held up well. The professional customer Service provided by your team was excellent! Keep up the good work, thanks!



by:

So this is the second set of these I have ordered for my 2001 Palamino Pop Up. The first set held air pressure all 10 years I had them and we took 25 trips with them (I just checked that fact the other day). So we had no problems until one popped on the interstate. At 10 years old, not a surprise nor disappointing.

Now the last set I ordered were already on rims mounted and balanced. These new ones came packaged as tires only. The my are way deformed for shipping and folded on half. We will see if they right themselves under air pressure. Not sure how they will get mounted. I used a mounting and balance machine a long time ago only an Army auto craft shop. Can’t imagine how these will turn out. I will update my rating if the experience is a debacle. If the tire shop thinks nothing of it, I will leave myv5 star rating as is.

Jeffrey

7/19/2021

The tires are perfect. They mounted just fine and ride just fine. Still holding air and haven’t added any in a year. We don’t pull it much these days, but I am confident I have a solid tire.



by:

tires came packaged well. we will see how they work when i get them mounted and on the trailer.



by:

I have never ordered tires online or for a trailer before this experience. They had exactly the tire that I wanted in the correct size that I wanted. That made it very simple to just call them up and order. We received the tires in 3 business days. We have not taken a trip on these tires yet but I expect them to be just fine when we do. If you are looking to replace original tires for your camping trailer, this is the place to look first. I will return here for future trailer needs.

Melissa K.

6/19/2015

Only took one trip on them last summer. One tire went flatlow sitting over the winter. We have kept it aired up during the spring, not sure if this is due to the tire or how they were installed on the trailer. never had that happen on the original tires in 6 years. So a little worried about what might happen on the one trip we plan to take this summer. any advice?

Etrailer Expert

Rachael H.

6/23/2015

The problem you are describing may be associated with how the wheel was installed on your existing rim, or potentially with the valve stem. If the tire is no seated properly on the wheel, and if the valve stem is bad, or does not have a good seal, you may experience slow air leaks overtime.


by:

This buldge doesn’t seem correct.

Etrailer Expert

Heather A.

9/13/2018

These tires are shipped flat and should take a normal shape once the tires are inflated.



by:

Tires look good. Will have them mounted tomorrow. Where somewhat out of shape from being packaged tight. Hopefully they will shape up when mounted.

Don

10/1/2022

750 miles on the tires and no problems.



by:

Tires were sent very fast and well packed in a box, not just shrink wrapped. The tires themselves are by far a better tire than what came on my boat trailer. They are almost twice as heavy as the originals and much stiffer sidewall. They pull better than the old tires ever did. Their price beat any I could find here on a comparable tire. I will be getting in touch with them when I need tires again. I would rate them A- double plus.

Bruce B.

10/2/2017

I have put many miles on these tires, including many back roads and trails, and have had no problems with the tires. They show very little wear for the amount of miles and abuse they have had. Would I buy them again? In a heartbeat!!!



by:

I bought these tires to put on my travel trailer. The outside and inside treads are wearing faster than the 3 center treads. I always check the pressure before getting on the road and both tires are inflated to 65 pounds.
I only have 18 thousand miles on them. I'm very disappointed in the wear pattern.

Etrailer Expert

Mike L.

7/10/2019

Tire treads that are worn at the edges would typically indicate an under inflated tire. Have you tired a different tire gauge in order to confirm your readings? If the pressure is fine, a bent axle or worn suspension parts could certainly cause the wear you describe, as well. The tires are covered by a 2 year warranty. Please call our Customer Service folks at 800-298-8924 for details.



by:

This rating is for customer service and assistance in purchasing new tires for my pop-up camper. Since I have just received the tires I can't honestly rate them. But if they perform as well as ETRAILER I'm sure I will be a happy camper. I ordered the tires on Thursday and they were delivered the following Wednesday. Thanks for the recommendation, the quick delivery, and a fair price. I'm sure this won't be my last purchase.

Doug P.

6/30/2018

I have made several long distance and a few shorter trips with these tires over the past year. The roads vary from Interstate Highways to country backroads. The tires have performed flawlessly under a wide variety of weather conditions. I am completely satisfied. And as I predicted this wasnt my last purchase from etrailer. Thanks for great products and great service.



by:

Super fast shipping. I buy new tires every five years for my pop-up, and with the Loadstar tires have never had a tire issue. I am very satisfied with the service I get from these tires. Also, E-trailer has the best price that I have found anywhere. I would recommend these.

Mike L.

5/28/2016

working great.



by:

I placed my order on Friday and had my tires by Tuesday. Excellent customer service and no shipping fees to boot. Easy ordering, no hassle and they kept me informed all along the way of where my tires where. I have not worked with this company before, but will in the future when there is another need. I would recommend etrailer to friends and family. Totally satisfied customer

Kim S.

5/7/2015

I ordered my tires on a weekday and poof they appeared within a day or two. Awesome customer service. I ordered 2 replacement tires and shortly thereafter I sold my popup to my brother who drove it from North Carolina down to the Keys where he lives - he has made multiple trips throughout Florida and has not had any problems at all with the tires and wanted to make sure he knew where I purchased them when it time to replace. Will definitely be a repeat customer. These people do an awesome job!



by:

Fast shipping, easy to mount, good price, trailer seems to tow better, more stable. Only place I found Load range D tires

Ron S.

6/29/2015

Still satisfied


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Show More Reviews

See what our Experts say about this Kenda Trailer Tires and Wheels

  • Recommended Replacement Trailer Tires for Boat Trailer with P185/80R13 Tires
    The P in front of the tire size 185/80R13 stands for "passenger" and is for use on an automobile. The ST in front of the ST185/80R13 you asked about stands for "special trailer" and is what we recommend for all trailer applications. The tire is made differently with thicker and stiffer side walls for trailer use. For the ST185/80-13, we only have a bias ply tire # AM1ST79. It is rated for 1,710 lbs at 65 psi and speeds up to 81 mph. We only have the ST175/80R13 size in a radial tire....
    view full answer...
  • Can I Replace My 5-1/2 Inch Wide Wheels with Smaller 4-1/2 Inch Wide Wheels on a Boat Trailer
    You can use a smaller wheel on your trailer as long as it has the same bolt pattern and a hub diameter equal to or larger than the existing wheels and the weight capacity of the wheel and tire combination are compatible with the trailer and axle. Of course, you would need tires that fit the smaller wheel such as the Loadstar ST185/80D13 Bias Trailer Tire - Load Range D, # AM1ST79. We do offer 5-1/2 inch wide rims, like # AM20304, if you wanted to replace your existing wheels. Or if you...
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  • Wheel/Tire Size Upgrade for 2008 Fleetwood Utah Pop-Up Camper
    You might possibly be able to upgrade to a larger diameter tires like a 205/75-14, but that will largely depend on how much wheel well clearance you have currently. To the inside of the tire, you'll want no less than 2 inches of clearance to the trailer frame/inside of wheel well. To the underside of the wheel well, you want 4 or an absolute minimum of 3 inches when the pop-up is loaded as it would typically be when you tow. A 205/75-14 tire would move the tire about 3/4 of an inch closer...
    view full answer...
  • Will 185/80D13 Trailer Tire Fit On A 13 inch x 4 inch Wheel
    When installing tires on a wheel, the tire will have a range of wheel widths it will fit on, which is 1/2 inch either way. In this case a 185/80D13 will work on a 13 X 4-1/2, 13 X 5, 13 X 5-1/2. The best fit is the middle of that range, which is 13 X 5. We currently do not offer a tire that will fit on a 13 inches X 4 inches wheel.
    view full answer...
  • Replacement Tire Availability to Replace an E78-14
    The ST185/80-13 tire like part # AM1ST79 is going to be 24.4 inches in overall diameter. The tire size ST 205-75-14 that you tried already is 26.3 inches tall so the 185/80-13 would be right at 2 inches shorter in diameter. Assuming your bolt pattern is 5 on 4-1/2 inch the part # AM3S331 would be for a wheel and tire in the ST185/80-13 size and has a 1,725-lb maximum load at 65 psi. You would need to determine the overall weight of the trailer first to be absolutely certain you have enough...
    view full answer...
  • Highest Capacity 13 inch Trailer Tire Recommendation
    If the total weight of your pop up camper is 3,300 lbs then you would need a wheel/tire combo that at least has the capacity of 1,650 lbs. The closest tire we have to that capacity in your size is the part # AM10210 which has a 1,610 lbs at 65 psi capacity. Your best option would be to bump up to the slightly taller tire size of 185/80-13 like part # AM1ST79 which has a 1,725 lbs at 65 psi. This tire fits the same rim size as your current size and is not even 1/2 an inch taller in diameter.
    view full answer...
  • New Trailer Tires Appear Deformed
    When trailer tires leave the manufacturer, they are palletized. When they are placed on the pallet, the tires are compressed in order to save space and reduce shipping costs, as you can see in the provided photo. Although they might look a bit alarming, there is actually nothing whatsoever wrong with the tires. Once mounted on rims and inflated, they will be perfectly safe and will preform very well for you. We sell hundreds of trailer tires on a weekly basis, and this has never presented...
    view full answer...
    Image 1 for
  • Can a 175/80D13 Trailer Tire be Replaced with a 185/80D13
    Yes, you could replace the 175/80D13 tires on your boat trailer with 185/80-13 tires. There would be hardly a size difference. For that you would want the part # AM1ST79.
    view full answer...
  • Is a C Range 205/75-14 Tire Less Likely to Fail than a D Range 185/80-13
    When comparing the 175/80-13 and the 185/80-13 tires, load range D, there is not much difference. The larger 185 is going to be about 0.3 inches taller, about 3/8 of an inch wider, and have a higher capacity at 1,725 pounds at 65 psi. Both sizes will fit on the same rim. Please note the higher capacity does not allow you to carry more weight. Trailer tires should also always be inflated to the maximum psi rating indicated on the tire. The next size up would be a 205/75-14. This of course...
    view full answer...
  • Recommended Method for Cargo Trailer Storage to Prevent Flat Spotting
    When using jack stands like the 2-Ton Jack Stands part # PTW41021 I recommend using one under each of the springs where the axle sits. If the springs are above the axle place them under the axle where the springs are. I also recommend using two on each side of the tongue to eliminate twisting that can occur on your jack weakening the jack mounting location. As another option that can save you a ton of work with jacks and jack stands we offer the Race Ramps FlatStoppers for Vehicle Storage...
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  • Is a ST185/80-13 Tire Offered in a Radial Ply
    I do have an option for you but the only 185/80-13 trailer tire we carry has a bias ply, not a radial ply like you requested. A bias ply tire will be better for short trips that might lead off road whereas a radial ply tire will be better for long highway trips. If you are okay with a bias ply tire then I recommend part # AM1ST79 which is a 185/80-D13 tire with a 1,710 lb per tire rating. If you must use a radial ply tire then you will need to select a smaller tire size like 175/80-13...
    view full answer...
  • Replacement Tires For 185/80R13 Tires With 5 On 4-1/2 Bolt Pattern
    Based on the information you sent, I recommend the Loadstar ST185/80D13 Bias Trailer Tire with 13 inch Galvanized Wheel, Item # AM3S334. The Loadstar is constructed to provide the strength of a bias tire with the stability of a radial tire. This unique design is very safe and durable and exceeds DOT standards. This tire and wheel combination fits 5 on 4-1/2 bolt patterns. It has a maximum load of 1,660-lbs at 65 psi with a maximum speed of 81 mph. If you just need just tires, I recommend...
    view full answer...
  • Radial Trailer Tire Recommendation
    The closest radial tire we offer to the size you mentioned is the Karrier ST175/80R13 Radial Trailer Tire, part # AM10199. This is a load range C radial, special trailer tire that has a maximum load capacity of 1360 lbs at 50 psi. this tire would be approximately 1/2 inch smaller diameter in size than the tire size you rerferenced. We do offer a tire that is the size you mentioned but it is a bias ply tire. It is the Loadstar ST185/80D13 Bias Trailer Tire, part # AM1ST79. This is a load...
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  • What Makes Trailer Tires Wear on the Inside Only and Can 175/80-13 be Replaced With 185/80-13
    There are a couple of things that can lead to the tires wearing on the inside only. Basically what is happening is the top of the tire is leaning in towards the trailer causing most of the weight to ride on the inside. This pretty much means the axle is bent, especially if both sides have the same problem. If it were just one side, there is a chance that is just the spindle that is bent. It will keep wearing on the inside until the issue is resolved and that could mean a new axle. You...
    view full answer...
  • What Tires do you Recommend I Upgrade to From the Factory B78-13ST on my Pop-Up Camper
    The standard tire you have is similar to the Loadstar ST185/80D13 Bias Trailer Tire part # AM1ST79 is 24.4" in diameter and is 7.2" wide. The Loadstar ST205/75D14 Bias Trailer Tire with 14" White Wheel part # AM3S440 is "26.3 in diameter and 7.8" wide. If you have the room for the additional tire and still have 1-2" between the tire and frame as well as 2-3" of clearance from the wheel to wheel well you will be in good shape. This one in particular has the 5 on 4.5" bolt pattern white...
    view full answer...
  • Replacing 175/80R14 Trailer Tires
    I can certainly point you in the right direction. A 175/80-R14 is fairly uncommon these days, but we do have options for replacing them. A 175/80-R14 has a diameter of 25" and is about 6.9" wide. The best replacement we can offer will be the Loadstar ST185/80D13 Bias trailer tire # AM3S331. This has a diameter of 24.4" and is 7.2" wide. So you will be losing .6" of diameter and adding .3" of width. I imagine this will fit very nicely in the current fender area, and you will stay very close...
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  • Will There Be a Difference In Handling Between a Bias and Radial Tire
    There isn't a difference in handling between bias and radial trailer tires; bias tires are designed more for hauling heavier loads and won't flex as much on the side walls. The downside is they'll run a bit hotter than radial tires that are designed for long highway trips where heat can build up. For a smaller camper you really could go either way and won't experience a lack of handling. You can go with the # AM1ST79 which are a bias tire, or the # LHCK105 which are a radial tire. Both...
    view full answer...
  • Recommended Tire for Single Sxle 3,600 lbs Coleman/Fleetwood Mesa Pop Up Camper
    I recommend going with the 13 inch Loadstar ST185/80-D13 Bias Trailer Tire, # AM1ST79. This tire is the same size as the tire you currently have on your pop up camper. These tires have a capacity of 1,725 lbs at 65 psi. With trailer tires you will always want to have them inflated to the maximum psi for the best ride performance and tire wear. I attached an FAQ on trailer tires for you to check out also.
    view full answer...
  • Replacement Trailer Tire for Size ST185/80-13
    Yes, we do carry one trailer tire that is size ST185/80-13 but it's a bias ply tire instead of the radial tire size that you mentioned. The part # AM1ST79 is the correct size but it is a ST185/80D13 instead of R13 which means it's a bias ply.
    view full answer...
  • Any Issues Going from a ST175D13 Bias Tire to a ST185D13 Radial for 19Ft Boat Trailer
    If your original tires size was ST175/80-13, like # AM1ST79, the new tire will only be 5/8 on an inch taller and 13/32 on an inch wider. As long as you have the clearance, the height of the new tire will not be an issue. As for the difference between a radial and bias tire, I recommend a radial tire especially if you are doing a lot of highway towing. Bias tire do have a stiffer sidewall over many radial tires, but the issue with bias tires is they cannot dissipate the heat like radial...
    view full answer...
  • Recommended 13" Tires With Higher Speed Rating For Pop-Up Camper
    We have several options for you, please note the linked selections below. My recommendation for a radial tire since radial tires run cooler and track better than bias ply tires and from your statement that appears to be an area of focus. I suggest the 13" tire with a load range of D and an M speed rating (81 mph), the Kenda Karrier, # AM10208. This ST185/80R13 radial special trailer tire has a ply rating of 8 and a 1,710-lb maximum load at 65 psi. It is constructed of double steel belts...
    view full answer...
  • Difference Between 80R13 and 80D13 Tires on Boat Trailer
    Great question! The difference is that the "D" in the 80D13, like the Kenda # AM1ST79, means it is a Bias ply tire where the "R" in the 80R13, like the Kenda # AM10208, means it is a Radial ply tire. Bias tires are the original trailer tire and do a great job. They have a stiffer sidewall which makes them better for off-road and agricultural trailers. Radials are the "new" kid on the block and are designed more for highway trailer use. They have more flex in the sidewall which helps handling...
    view full answer...
  • What is the Modern Tire Size for C78-13 Trailer Tires
    The modern tire size for C78-13 trailer tires is ST185/80-13. We offer a load range D Loadstar tire in this size, Item # AM1ST79. This durable bias tire features an advanced rubber compound for longer tread wear and low rolling resistance for a smooth ride. Its maximum load is 1,710 lbs at 65 psi, and it includes a 2-year warranty. I've included a review video for this tire for you as well as an FAQ article on tires.
    view full answer...
  • Recommended Tire to Replace Tire Size C78-13 for Coleman Mesa Pop up Trailer
    I have just the tire for you. Check out the Loadstar ST185/80-D13 Bias Trailer Tire, # AM1ST79. This tire is the same size you have on your pop up camper. These tires have a capacity of 1,725 lbs at 65 psi. With trailer tires you will always want to have them inflated to the maximum psi for the best ride performance and tire wear. I attached an FAQ on trailer tires for you to check out also.
    view full answer...


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