What is the Difference Between 235/80-16 and 235/85-16 Trailer Tires

Question

Question:

Is there much difference between 275-80-16 and 275-85-16 that could cause fit issue on my fifth wheel having tandem axels its a 2008 Montana 38.5. Thank you

asked by: Walter H

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Expert Reply:

Do you by any chance mean 235/80-16 and 235/85-16? Because there isn't a 275 trailer tire size that I have seen. If so then the widths are the same between the two 235 sizes. The difference is overall diameter. The 235/80-16 is 30.9 inches in diameter. The 235/85-16 is 31.7 inches in diameter.

A difference of 0.8 inches but only half of that, 0.4 inches, applies to above the tire. It is unlikely that 0.4 inches will cause a fit issue but you can check to make sure there is space enough above the existing tires for the larger size.

Capacities are different too. The 235/80-16 top out at 3,500 pounds for a load range E whereas the 235/85-16 top out at 3,960 pounds for a load range F. I have included a link to all of the 235/85-16 tires that we carry.

expert reply by: Michael H

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Marshall D.

4/13/2024

Can I use a 16 85 trailer tire for a steering tire

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Eric D.

7/6/2020

How much height would I expect to gain on my trailer if I went from 235/80-R16 and upgraded to 235/85-R16?

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Chris R.

7/9/2020

The 235/85R16 tire is just about 1" taller in diameter than your existing 235/80R16 tires, but only half of this difference will actually affect the trailer height (since the other half is above the axle). This means the new tires will only raise the trailer about a 1/2" at most.

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Bryant P.

5/13/2020

What if my trailer has one of each on one side? Is that an issue? Will the suspension make up for it?

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Chris R.

5/16/2020

If you absolutely HAVE to keep these tires on (until you're able to get new ones) I suppose the orientation you described would be the best setup. However, I do still highly recommend that you change two of the tires out as soon as possible so that all 4 are the same size. The longer you keep your existing tires on the higher the chance of problems coming up (tire failure, suspension issues, etc).

Helpful Links

dept-pg-trailer_tires_and_wheels-gw-235%7c85~16.aspx

Reply

Frank S.

9/25/2021

@ChrisR I have a kaufman triple axle car trailer that has 235 80's on.2 tires are shot so I ordered 2 new ones off the internet and ended up receiving 235 85's if I put them on the front axle am I going to run into suspension issues? Probably just run them for a few weeks til I can get it straightened out

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Les D.

10/20/2021

@FrankS I would not run different size tires on a trailer. In your case, one pair of wheels is 1 inch taller than the others. First, will your new pair fit in the wheel wells and next to the other tires? Second, these taller tire are going to be forced to support more of the trailer weight and wear faster. Third, although very little, the taller tires may create a teeter totter effect that could potentially add to sway issues and porpoising.

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Answer 1

It sounds like you just want to know the difference in size and load ratings between ST235/80R16 and ST235/85R16 radial trailer tires. When fully inflated a ST235/80R16 radial trailer tire like the Provider #TTWTRTM2358016E will measure…

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Answer 2

Trailer or automotive wheels can have a positive or negative offset. The offset refers to the distance between the mounting surface of the wheel that touches the hub and the center line of the wheel, as shown in the diagram I have edited for you. A…

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Answer 3

The Cooper Work Series 215/75R17.5 Radial Tire w/ 17-1/2&amp;quot; Wheel #LH28FR would require lug nut torque figure of 130-150 ft lbs since it is a 17.5 diameter aluminum wheel with 9/16 inch diameter wheel studs.

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Answer 4

Generally trailer tires should be replaced every 5 to 6 years regardless of mileage and use. This &quot;clock&quot; can be started once the tires are mounted to your trailer, assuming they were stored in a controlled environment…

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Answer 5

The Curt Class 5 Universal Weld-on Hitch part #C87CR is designed to be welded to the frame of a vehicle. I cannot recommend bolting and drilling unfortunately. The frame will need to be clean and clear of obstructions before welding. In regards to…

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Answer 6

I do have an option for you but there aren&#39;t any custom fit trailer hitch options for a 2006 Thomas School Bus. That said, we do still have universal options which can be installed either via welding or cutting/drilling. For this, I…

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Answer 7

Yes, the Provider ST235/85R16 Radial Trailer Tire - Load Range G #TTWPRG235R16 is available with a black wheel and an 8-lug bolt pattern. This is what you need: - Provider ST235/85R16 Radial Tire w/ 16&quot; Vesper Black Mod Wheel - 8 on…

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Answer 8

The right and left orientation is determined if you are standing behind the trailer looking towards the tow vehicle. The left side is the drivers side and the right side is the passengers side. Tthe shorter brake pad will always be in the front of…

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Answer 9

Given that your vehicle is not listed on our fitguide for available hitches, one option with your provided dimensions is the Draw-Tite Ultra Frame Service Body Trailer Hitch Receiver #41990-07. With this hitch, you will be able to adjust the 9-1/2…

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Answer 10

There seems to be a mix up somewhere. Trailer tire #AM10501 that you have referenced is size 235/85-16, not 235/80. We have 2 tires in size 235/85-16. First, #AM10501, is a load range F and is rated for 3,960 pounds at 95 psi. Then we have…

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Answer 11

Thanks for the picture of what you have and the info you listed. The correct wheel you need is the part #AM20794 that you referenced.

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Answer 12

We have 11 wheels that are 16x6 inches and have the 8 on 6-1/2 bolt pattern. I have included a link to them to the right. If none of these wheels match, feel free to email me some pictures and I can determine if it is something that we can add to…

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What is the Difference Between 235/80-16 and 235/85-16 Trailer Tires

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