How Much Larger is Trailer Tire Size 235/85-16 Compared to 235/80-16


I have 235 80R 16 on my Solitude 5th Wheel. How much larger diameter are the 235 85 R 16 tires. I Want to make sure they would fit my 2014 Grand Design Solitude 368RD.


Expert Reply:

The diameter difference between a 235/80-16 and a 235/85-16 is .7 of an inch. The 235/85 measures 31.6 inches in diameter and the 235/80 measures 30.9 inches.

For a tire only in that size we have the part # TTWPRG235R16 which has a weight capacity of 4,400 lb at 110 psi and has a speed rating of 81 mph.

expert reply by:
Jameson C

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