The 255's are actually taller than the 285's. I'm running the 255' KM2's on my 4Runner and most of my buddies are running various 285's. Great tire and size for a 4Runner.
Wow, you are right. Thats a great size tire! I think with those narrow tires I wont need to replace the front fenders as often!:sombrero:
LT255/70R16/D 38569 115 Q RWL 18 KM2 686
2680@65 2470@65 30.3 6.5" - 8" 10.2" on 7.5"
LT255/85R16/E 30639 123 Q RWL 18 KM2 625
3415@80 3085@80 33.3 6.5" - 8" 10" on 7"
LT285/75R16/E 32537 126 Q RWL 19 KM2 628
3750@80 3415@80 33.1 7.5" - 9" 11.3" on 8"