The 2002 Jeep Grand Cherokee tire sizes are 235/65HR17, 245/65HR17, 255/60HR17, 245/60HR18, 255/55HR18, 225/75SR16, 245/70SR16, 235/65SR17, 245/65SR17, 245/55VR19. The 2002 Jeep Grand Cherokee bolt pattern is 5x127. For more info check the size tables below. mca1977jpsnet. 323 posts 路 Joined 2004. #10 路 Jun 5, 2007. U should be able to fit 32s with a 3-3.5" lift. Wheeling is a different story however. To be able to wheel 32s u'll need to remove the factory flares and cut along the body spot welds uaprox 12-18" from bottom. Cut flares to match and reinstall. other option is to remove flares and I upgraded to 32.5" tires on stock 20" rims. The full size spare is 30" on a steel 18" rim. I know in many sedans and light trucks, a donut is used for a spare unless you have the tow package. So I know smaller tires are often used as spares. My question is whether I can use the 30" spare if necessary for right now. mtnmarc. 1542 posts 路 Joined 2009. #15 路 Dec 16, 2010. kinda hard to tell, but they are 15s. steel rims are stronger than aluminum too. 99 WJ hp44, 3 link, Eaton e locker, 14" foa coilovers in the front. 14 bolt, 4 link, grizzly locker, 12" foa coilovers in the rear. 5.38s and 37s. Save Share. Base engine size: 4.0 L: Cylinders: Inline 6: Base engine type: Gas: Horsepower: 195 hp @ 4,600 rpm: Torque: Related Used 1999 Jeep Grand Cherokee info. Shop used vehicles in your area. The backspacing on WJ 16-inch wheels is 6", factory tire size 245/70/16. I don't really know what the backspacing is on factory Wrangler wheels but maybe it's 6.25"? With the same width tires (245 mm), this means you will be pushing your tires .25-inch closer to the shocks, where the minimum inboard clearance point is. Jeep Grand Cherokee WJ Roof Mounted Tire Carrier. You can鈥檛 fit a larger than stock spare tire in the factory compartment, our system lets you carry it on the roof. If you are running larger than stock tires, you know you can't fit a spare in the factory provided compartment. I believe a 245/75R16 (30.5") tire is the largest tire it will hold. XC_Jeeps 路 #14 路 Jan 30, 2013. You can easily run up to 32's on a 2" BB, I've got 255/75/17's on my wj with a 2"BB and I only had to do a little baja trim on the front bumper. 1. Reply. Save. This Spare Tire Carrier Will Soon Adorn The Ultimate Jeep Grand Cherokee. Anyway, that was an exclusive the Jeep Grand Cherokee鈥檚 absurdly rare MOPAR external tire carrier is built. It鈥檚 not exactly a marvel of engineering (and I could just buy an aftermarket one that doesn鈥檛 hang so low and ruin my departure angle, though those tend to It's a 31.6" tire. Most inch-sized tires run about 1/2" under (ie: 31x10.5x15 is only 30.5" tall). So yes, it's a 32 and yes, people rub it at 4" lift. You can sort of run 265/70-16 (that's 30.6") at stock height but only if you pick a mild highway tread. If you pick an aggressive tread pattern it will rub for sure. IGFSeK6.