Boat Trailer Tires are Wearing On the Inside Tread

Question

Question:

I have a 2009 Trailmaster trailer manufactured by J.Q.Tex, Inc. and distributed by Vanguard. The model number is SMB 1616, body type is single axle, 2000 LBS. GVWR. And a shipping weight of 400 LBS. My boat and out board motor weight about 1400 LBS. The tires on the trailer seem to the right size and load range, but both are compleatly worn out on the inside after only about 350 miles. The ware pattern are the same on both tires , and looking at the wheels from back of the trailer I can see they are leaning in at the top and out at the bottom. My question is this condition the cause of my tire ware. I have never hit any pot holes,speed brakers,or something that would bend the axle. Anyway I am thinking about replaceing the axle. Should I replace it with a 2000 LBS. or replace it with a larger capacity axle? This boat and trailer were sold to me new as a matched set an should be compatible. Any suggestions or advice will be munch appreciated

asked by: Wayne S

0

Expert Reply:

Generally when tires bow out at the bottom, in at the top, that indicates that the trailer is overloaded. If you are within the 2,000 pound capacity though this should not be happening.

If the axle was ever flipped upside down, like to gain more height, that can cause this same issue. Axles should not be flipped because they have a bow in them. A flipped axle will have the bow facing the wrong way and it diminishes the capacity of the axle.

Also, worn suspension components can cause this issue. Have the trailer looked over by a shop that works on trailers or trusted mechanic to determine what, if anything, might be worn and in need of replacement.

If you go ahead with replacing the axle, you can go to a higher capacity but I would still stay within the original capacity to be on the safe side. A local trailer supply store should be able to order an axle. You would need to know the measurement from spring seat center to spring seat center and the distance from the hub face on one side to the hub face on the other side.

Also make sure that the trailer tires are inflated to the maximum psi as indicated on the tire. Under inflated tires can wear much faster and cause the tires to fail.

expert reply by: Michael H

0

Ronald W.

4/21/2020

have a pontoon trailer,torsion axle.single axle.Tires rub against torsion arm

Reply

Chris R.

4/23/2020

If the tires are rubbing against the torsion arm the only real solution would be a smaller tire. Are you running oversized units on the trailer? If you can tell me what size you currently have mounted I would be happy to recommend something that isn't as wide.

Reply

Answer 1

I'm not quite sure why it's called a "rating" column because that just has to do with how many reviews have been left on the product page. The biggest differences between the Loadstar #AM3S158 and the Karrier #AM31952, is that the…

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Answer 2

Karrier and Loadstar are two different brand names used by Kenda. There's no difference in quality or function between the two brand names. For a ST175/80-13 Radial trailer tire in load range D, I'd recommend part #AM10210 if you're…

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Answer 3

The spindle dimensions you gave match up with #TRU74FR. This spindle is for use with 3,500 lb axles. Based on this, we can tell you that the appropriate bearings are inner #L68149 and outer #L44649. The correct races are inner #L68111 and outer…

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Answer 4

It is a good idea to firstly make sure the trailer axle is not overloaded by weighing the trailer because uneven wear and inside wear is most likely caused by overloading the axle or misalignment. Trailer axles are manufactured with a slight bow in…

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Answer 5

The main reasons why trailer tires blow out is heat generated from under inflated tires and overloading the tires. Trailer tires should be inflated to the maximum psi indicated on the tire. A tire in the same size but with a higher ply rating would…

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Answer 6

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 7

Trailer wheel bearings are specific to the spindle that is installed on the axle that is on your trailer. You will need to safely support the trailer, remove the wheel and tire, remove the grease cap, remove the cotter pin and washer that secures the…

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Answer 8

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 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

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 11

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 12

The three most common lug stud sizes for a trailer are 1/2"-20, 9/16"-18, and 5/8"-18. In order to make sure you get the correct lug nuts you need to measure the lug studs on the trailer now as we have no way to look this up for…

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Boat Trailer Tires are Wearing On the Inside Tread

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