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Spare Tire for a 2013 Karavan Trailer for Bayliner 175BR Boat


Need a tire/wheel package to use on a spare tire mount for my new boat. The trailer tire is currently a ST 18.5x180 13D


Expert Reply:

It sounds like you need an ST185/80-13. We have several tire and wheel combos in this size with a D load range rating. Since this is for a boat trailer you will probably want to go with a galvanized or aluminum wheel.

For a galvanized you can use tire and wheel combo # AM3S334 that you have referenced. For aluminum we have tire and wheel combo # AM3S339.

Both of these wheels have a 5 on 4-1/2 bolt pattern. The tires for each are rated for 1,710 pounds at 65 psi. And both are bias trailer tires. If you need a different bolt pattern for the wheel let me know what it is and I can make some recommendations. I have linked an article that explains measuring the bolt pattern of a wheel and a link to our help article on trailer tires for you.

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