Recommended Tires And Wheels As Well As Over-Under Kit For Utility Trailer

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Question:

Can I get a 225/15 load range e mounted to a silver mod 5 on 4 1/2? My travel trailer has to go down 10 miles of dirt road, washboard and rutted. The 14inch tires it came with are a problem, plan is to flip the axels and go with the 10 ply not for load capacity but durability. Thoughts? Our utility trailer has 10 ply e and even loaded very heavy has neve had a flat or problem on the same road. Btw 14s were new on unit 1.5 years ago and trailer is now going out of warranty hence the upgrade. Thanks

asked by: Wayland C

1

Helpful Expert Reply:

For your desired 225/15 load range e tires on silver mod 5 on 4-1/2, you will need to purchase the tires and wheels separately and have them mounted at a local tire shop. For this tire, I recommend the Westlake ST225/75R15 Radial Trailer Tire - Load Range E # LHWL304 because of its warranty. This tire has a 5 year warranty and comes with 2 years of roadside assistance should anything happen. No other company offers that. This tire is made extremely well and that is part of the reason they can offer that warranty. For your wheels, I recommend the Lionshead Steel Modular Trailer Wheel - 15" x 5" - 5 on 4-1/2 - Silver # LHHA315. This combination will be slightly more durable on the side wall due to the 10 ply rating versus 8 ply of load range D, but the tread portion will be similar.

If you want wheels already combined, you will need to drop to that D load range. If you do that you will still get a really nice tire already mounted in the Provider ST225/75R15 Radial Trailer Tire w/ 15" White Mod Wheel - 5 on 4-1/2 - Load Range D # A225R645WM. This is the route I would go based on what you said, but there is a little more peace of mind with the higher capacity tire and warranty.

To flip your axles, I recommend the Dexter Trailer Springs Over-Under Conversion Kit # K71-384-00 if you have 2-2/3 inch axles or the # K71-385-00 if you have 3 inch axles. I've attached a photo to help.

expert reply by: Jason S

1

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Answer 1

The #AM32418DX wheel/tire combo you'd looked at features a 205/75-15 Load Range D radial tire mounted on a 15 x 6 silver mod rim with a 5 on 4-1/2 inch bolt pattern. Ideally, you'd want all the wheels to be the same size, but if the…

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Answer 2

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 3

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

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Answer 4

The 5.30-12 tires, being wider, are going to make more contact with the road. This means that the noise, and heat build up will be higher than a 4.80-12 tire but the rolling resistance will actually be less because the tire is larger diameter. The…

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Answer 5

Your math is correct in your trailer weight load example. If a fully-loaded tandem axle trailer weighs 4000-lbs then each of the 4 tires will bear 1/4th of that load, or 1000-lbs. In this case a tire rated for 1300-lbs would provide a good safety…

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Answer 6

Load range B trailer tires are going to have a lower capacity than C load range tires. Basically that, psi rating, and the ply rating are the only differences. A higher load range tire would last a little longer than lower load ranges of the same…

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Answer 7

Since both a ST145/R12 size tire, like the Kenda Karrier S-Trail #AM10130, and a 5.30-12 size tire, like the Kenda K353 #AM10068, fit a 12 inch wheel, a ST145/R12 size tire can replace a 5.30-12 size tire. Keep in mind that these tires do have…

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Answer 8

You can add larger wheels and tires to a trailer as long as you have enough room for the larger size. The main clearance issues we find when putting larger tires and wheels on a trailer is from the top of the tire to the fender and from the inside…

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Answer 9

The difference between the two trailer tire sizes is that the letter D in the first size you listed ST205/75D15 stands for bias ply and the letter R in the tire size that they put on your vehicle stands for radial. Radial tires are preferred over…

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Answer 10

The two tire sizes you referenced, 4.80-12 and 5.30-12, both fit 4-inch wide rims, but they differ in their overall diameter. A 4.80-12 tire/wheel when fully inflated will have a diameter of 20-1/2-inches while the 5.30-12 size will be just under…

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Answer 11

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 12

The 12 inch tires that we carry are rated for 65 miles per hour. Any faster than that for extended periods and the excessive heat build up will cause tire failure. To get a tire with a higher speed rating you would have to go up in size. That also…

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