i have a 1996 Ranger 4.0 4x4 , i was wonderin what the max tire size i could run on a stock drivetrain , it has an 8.8 Rear with 3.73 gears and a factory l/s , i had 31's on it at one time , i was wonderin if i could go up to 32's , they would be on American Racing AR23 15x8 rims that have a -19mm offset , the tires are cooper discoverer stt's , any input is greatly appreciated