Difference Between ST235/80R16 and ST235/85R16 Radial Trailer Tires

Question:

235/85r16 vs 235/80r16 - I dont want to know all the formulas. I want to know if the 80s will give me more clearance between the tire and the fender and if it affects load capacity. Thanks..

asked by: Brenda A

Expert Reply:

It sounds like you just want to know the difference in size and load ratings between ST235/80R16 and ST235/85R16 radial trailer tires.

When fully inflated a ST235/80R16 radial trailer tire like the Provider # TTWTRTM2358016E will measure 9.25" wide and have a diameter of 30.79". This tire also has a load rating of E and a capacity of 3,520 lbs at 80 psi.

A ST235/85R16 radial trailer tire will be both larger in width and diameter and have a bigger load capacity. When inflated this tire will measure 9.25" wide and have a diameter of 31.73" so there will be less clearance between the top of this tire and your fender.

In short, the larger ST235/85R16 tire will give you less clearance but have more capacity.

expert reply by: Kyle S