Question

Boat Trailering Guys,

I notice that trailer tires of the same size designation vary in diameter between manufacturers. Example: for ST205/75D15 tires Carlisle shows a diameter of 27" & TaskMaster 27.91". Question 1)Will this difference in diameters cause a problem on a single axle trailer if a Carlisle tire is on one side & a TaskMaster on the other (the trailer mfg thinks it is ok)? 2) Why aren't the specs the same or is this within accepted tolerances? Tks

Paul

Answered on: 6/2008

There is also a difference in width and load rating. The TaskMaster is rated at over 1800 pounds while the Carlisle is just under 1500 pounds. What is the weight of your load? Once you determine the total weight (including fuel, water, filled coolers and accessories) divide it by two and that is the minimum of your required tire rating. You should always build in a little extra cushion of 10%. If you are trailering short distances you may be ok with the tolerances if the load rating is met. If it were me and I was trailering long distances I would match the tires with the same brand for consistency.

Boat Trailering Guys