I did know that it was a little over 29", but I'm running a 235/75/15 currently, and I didn't know if the extra 1" (or so) of height would be too much difference for the stock suspension.

More importantly, the extra 50mm of width seems to be the difference between a 6.5" wheel and an 8.5" (if my math is right). That 2" of width is (proportionally) MUCH bigger than the 1" of height.

HUMMER .25: No need to compensate.

1989 Dodge Raider: 3.0/5
1992 Chrysler LeBaron Convertible: 3.0/A
1994 GMC Safari: 4.3/A