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Trailer Tires Keep Blowing Out on a Boat Trailer

Question:

What is the difference between the AM31208HWTB and the KR25 ST145R12? I have had some trouble with blow outs with my boat trailer C rated tires on long high speed trips from Pittsburgh to above Toronto Canada in the past. Looking to find a more reliable tire for these trips. With your 4 on 4inch boltpattern aluminum rims the price is the same. Is their a best tire between these for my application. The boat and trailer do not exceed capacity on these trips but is loaded near capacity. your advice and information will be much appreciated.

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Helpful Expert Reply:

Part # AM31208HWTB is our part number for the Kenda KR25 tire mounted on the HWT Aluminum wheel. There are several reasons why a trailer tire could fail. Since you mentioned the trailer is not overloaded we can rule that out. You also mentioned high speed trips. Few if any 12 inch trailer tires are rated for higher speeds than 65 miles per hour.

The faster you go, the more heat is generated. Heat is the number one enemy of the tire. Trailer tires are also made with a thicker sidewall when compared to passenger vehicle tires. When trailer tires are under inflated the thicker sidewall causes the tires to generate excessive heat which can lead to failure. Always inflate trailer tires to the maximum psi indicated on the tire.

And finally, dry rot can be a major problem with trailer tires since trailers tend to sit around out in the elements a lot. To fix this issue you just need to cover the tires or the whole trailer if kept outside.

Also keep in mind that going with a higher capacity tire does not increase the trailer capacity. I have included a link to our informational article on trailer tires for you.

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