Troubleshooting Tire Wear on Outsides of Trailer Tire

Question

Question:

I replaced 225/75R C tires with 225/75 D tires. The R stands for radial I think ? The new tires are not a radial and are much more norrow. The tire on the right frront is worn badly on the outside edge after 400 miles. Its the only one worn. Could this be due to the new tires not being radial ?

asked by: Danny

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Expert Reply:

The D in the tire size you have now means that it is a bias-ply tire. If there was an R instead, like your previous tire, that would mean that you have a radial.

Most likely the reason the tires I wearing on the outside has nothing to with the tire construction.

Most likely the outside edge of your trailer tire is wearing because of an issue you are having with the suspension of the trailer. Check the suspension for worn out components or holes that are egg-shaped instead of round where the suspension components come together.

Sometimes, when the outside edges of a tire are showing wear its because the tires are under-inflated. The solution is to always inflate the tires to the maximum pressure listed on the sidewall in this situation.

expert reply by: Jameson C

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Answer 1

I'm assuming you have a tandem axle trailer and therefore 4 wheels. The highest rated tires we carry for 15 inch rims is load range E with a capacity of 2,830 pounds. Multiplied by 4 that's 11,320 pounds which is a good amount for your 12,000…

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Answer 2

Blowing five tires in a year definitely isn't normal. Taking the pin weight of your fifth wheel into account when figuring out the load range for your tires is pretty common but I'd definitely recommend increasing the load range going forward…

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Answer 3

The main reason people like oil bath hubs over grease hubs is the oil bath hubs have a less involved maintenance schedule than grease hubs. It is recommended to inspect and repack grease wheel bearings and seals every 12k miles. With oil bath hubs,…

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Answer 4

If you are referring to two white wires from the brake magnet that are coming from the rear of each electric brake assembly, then it would not matter which wire is connected to ground and which wire is used for the brake feed. The magnet that…

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Answer 5

For your tire size of 225/75-15 the best and safest tire we offer is the Kenda #AM1ST97. This tire has a weight capacity of 2,960 pounds per tire and has a tread design that provides superior traction in wet and dry conditions. Tire is suitable for…

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Answer 6

It sounds like the magnets or their wiring could be bad. Your 2012 Chevy Silverado 2500HD is probably sensing the wrong resistance from the trailer brake magnets and that is why you see that warning message. When magnets have 2 of the same color wire…

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Answer 7

The Timbren Axle-Less Trailer Suspension System w Electric Brake Hubs #A35RD545E require a 5 on 4-1/2 bolt pattern and a minimum 14" wheel so the Dexstar Conventional Steel Wheel with Offset #AM20504 will be a compatible fit. This Wheel does…

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Answer 8

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 9

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 10

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 11

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose #8-258-5UC1. If the inner bearings are marked…

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Answer 12

A BT8 spindle would have a diameter of .99 of an inch where the bearings would both install and would have a diameter of 1.24 where the great seal would ride. That would require a hub part #AKIHUB-440-2-1K for an idler hub. A BTR spindle would have…

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