You can put 225/75/15 on it with no problem. I have a 96 Tracker and currently running
225's on it. All though i am in the process of putting a 3" suspension lift and 31's on it.
you can fit a 33 in tire
For stock truck a 31 inch tire is the biggest possible and even this tire will rub
235/75/15 is the biggest that will fit with no lift not true my stock 94 geo tracker has 255/70/15 and drives just fine
33" tire is what we recomend
Recommended pressure is found on the tire placard in the driver side doorway. Mine says 26 psi, front and rear. I have 2dr, 4wd, convertable
The factory service manual for 1996 Sidekick/Tracker defines it as: Total Toe................0.16 to 0.48 Degrees
you can run a 33" tire without any mods, or a 35" tire but you have to cut the lower front plastic valance.
195/75/R15
195/75R15
The question is not the biggest you can mount but should be the biggest you should mount. Original Equipment Size: 225/70-16 is the size tire you should use. Any other size will adversely effect handling, ride, mileage, and your odometer. You may be able to move up to a 235/60-16 tire and still have the same diameter tire. That depends on the brand tire you install. Talk to a trusted tire specialist for advice on any larger size than the OEM size.
P205-75-15
The biggest tire that can fit on a 15 inch rim is a 15 inch tire. It is very unsafe to mix rims and tire sizes together.