Originally Posted by MAST4R

This is old, but for the record, it is wrong. Many SL tires in 4R sizes have maximum pressure of 51 psi and the remaining ones are 44 and not 36. Load ratings between P and C are often identical after adjusting for LT application (which is a discussion in itself, since the 4R is not a pickup).

I have not seen one ounce of evidence that a C tire is necessarily stronger for offroading than a B tire. Of course, if the tire does have a 3-ply sidewall (like many LTCs in 255 75 17) then the C will be stronger.



It is the common perception that E-load tires have stronger sidewalls for offroading because they have stronger construction so as to hold 80 psi and thus higher loads.

But in practice, unless the E load has a 3-ply sidewall, the advantage is likely way smaller offroad than it is when hauling, which is the design parameter.

I could definitely use a tough tire offroad yet I am running SL which is better at everything other than sidewall strength. The trick is to run the SL at or near street pressures. By contrast, the E must be aired down both for traction (terrain compliance) and comfort. On road the only possible advantage of D or E is added cornering stability at proper pressures. The rest is a laundry list of shortcomings.