Maximum tire size on Chevy Tracker?

Answer 1

From personal experience:

89-98 Tracker/Sidekick -- LT235x75R15 on Suzuki Samurai rims. If you don't use Samurai rims, they will rub the frame just a wee bit when the wheel is cranked to full lock --- but should still be acceptable. Also note -- any other tire that measures in the neighbourhood of 29 inches tall by 8.5-ish inches wide should also work (225x70R16, probably even a 215x85R15, etc).

For 99-04 Trackers -- LT235x75R15's (same as above) will rub just slightly on the frame with the factory 15x5.5 rims. If you can lay hands on some 15x6's with 4-ish inches of backspace, that will cure the frame rub. If I had it to do all over again, I'd go 215x85R16's since 16 inch rims that will fit over the calipers are much easier to find and the narrower tire is more forgiving of backspace issues -- but the 235x75R15's I have on there (15x6 winter rims with 4.25 inches of backspace) are working fine and do not rub.

So, in summary -- without a lift kit and custom backspacing on the rims -- a 29 inch tall by 9 inch wide tire is about the max you can go unless you don't mind tire rub.