Replacement 225/75-15 Sized Tires for a Boat Trailer with Frequent Blow Outs

Question

Question:

I have a 2003 Trailstar Trailer, single axle, that carries a 20ft fish and ski boat that weighs 3180 lbs without gear and fuel. The trailer came with 15 inch wheels and 5 bolts. Can you give me an idea of the load range and ply I should be considering when buying new tires. I have been using 225/75/R15 size tires, 10 ply, loan range E, 80 psi. I have had the tires for only 2 years and both blew out. I think the original tires were the same size but load range D, not sure of ply 65psi. Also can the same size tire from two different manufactures have a different width and diameter. The tires that I experienced the latest blow out appeared to have less clearance between the tire and the fender than the original tires. In the most recent blowout it appeared the tire got caught on the boat fender. Thanks.

asked by: Rich B

1

Helpful Expert Reply:

Regular blow outs are usually the result of overloading the tires, exceeding the speed rating of the tires, or improper inflation of the tires.

The load range and tire ply needs to be able to handle the weight of the loaded trailer. Exceeding this causes added strain on the tire which can cause it to fail. Always make sure your tires can handle the weight of your trailer and you're not overloading it.

Next is the speed rating. The speed rating may be listed on the side of the tire but not always. If it isn't there then the rating is likely 65 mph. Exceeding the speed rating will cause a tire to heat up more than it's designed to which can also cause a tire to fail.

Finally, the air pressure. Trailer tires should always be inflated to their maximum listed psi when they're cold. They're designed to run at this psi in order to carry the load they're rated for. If you run them at a higher or lower psi you are changing the amount of weight the tire can handle and the dynamics of how it carries the weight.

If your trailer came with 225/75-15 sized tires from the manufacturer I recommend staying with this. It is possible that tires may have a slightly different outer diameter because the tread depth from one manufacturer may be thicker than another. But this will be minimal. If your tire made contact with the trailer then you might have a clearance issue. We recommend about 4 inches between the tire's tread and the underside of the fender to allow for the trailer to bounce on its suspension while traveling. If you have less this could be your problem.

For replacement tires I recommend the Taskmaster Providers. In size 225/75-15 we have an 8 ply, load range D # TTWTRTM2257515D rated for 2,540 pounds at 65 psi. We also carry a 10 ply, load range E # TR225LRE which is rated for 2,830 pounds at 80 psi.

I've attached videos of each tire as well as an article you might find helpful.

expert reply by: Charles S

1

Replacement 225/75-15 Sized Tires for a Boat Trailer with Frequent Blow Outs

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