The 10.50 inches is the tire's advertised width, usually taken at the tread, not the sidewall bulge. And the 15 is the size of the wheel it's designed for. So, in this case you've got a 31-inch ...

Pro Comp is noted for its tough tires, and they don't get much tougher than these 37x13.50/15 XTerrain and LT 325/80R16 (37x13.50/16) Xtreme All Terrains. How about three plies of high-denier ...

Well, this face-off is all about the off-road experience, and both the Land Rover Defender and Toyota 4Runner TRD are legitimate and legendary when tire meets the muck.

You might think that the Jeep Wrangler Rubicon, with its solid front and rear axles, locking diffs, and stock 33-inch tires, is the most capable all-around modern off-road vehicle. And while that ...

The special ZR2 off-road version of the Colorado mid-size pickup featured front and rear electronic locking differentials, spiffy Multimatic shock absorbers, a lifted body and big knobby tires ...

There are still big differences in tire designs for on-highway and off-road tires, but newer designs make it possible to do a little of both.

Well, this face-off is all about the off-road experience, and both the Land Rover Defender and Toyota 4Runner TRD are legitimate and legendary when tire meets the muck.