Narrower Tire Recommendation than a ST185/80D-13 for Trailer that Weighs 2235 lbs

Question:

My boat is a I/O that weights 1750 lbs. and the trailer is a Shorelandr that weights 485 lbs. The tires that on the trailer are ST185/80D-13 Load Range C. The side of the tire is only about 1inch to 1-1/2inch from the outer edge of the fender. Can I go with a 13inch tire that is not as wide and still be safe.

asked by: Mike B

Expert Reply:

Based on the weight of your boat and your trailer you would need a tire with at least a 1,118 lb capacity.

For a narrower tire than the ST185/80D-13 that you currently have that would have enough capacity you would want to go with a 175/80-13 with a Load Range of C as that will have a 1,360 lb capacity at 65 psi. The part # TTWTRTM1758013C would be a great option.

This tire size will be .3 of an smaller in diameter and 10 mm narrower overall.

expert reply by: Jameson C