cupping tires.. those running 285s

[Ldub]

I'd always heard that cupping was caused by bad shocks.

As far as offset is concerned ... mine have never shown any cupping but with MTs, it may be hard to tell. My fronts are VERY worn (but evenly) while the backs are still good - rekin I shoulda rotated more often but by the time I noticed it, it was too late.

...you should always have your best tires on the steering axle, so blowouts, however unlikely, are more apt to happen on the rear axle.