Wheels: Wheel 1 Wheel 2
Wheel size 17x7.5 ET 31 18x9 ET 12
BackSpace 139 mm (5.5'') 139 mm (5.5'')
Rim Lip 38 mm (1.5'') wider
Typical Weight ~ 22 lbs / 10 kg ~ 30 lbs / 13 kg
Tires: Tire 1 Tire 2
Tire size 265/70-17 275/70-18
Section width 265 mm (10.4'') 275 mm (10.8'')
Sidewall 186 mm (7.3'') 193 mm (7.6'')
Tire diameter 804 mm (31.7'') 843 mm (33.2'')
39 mm (4.9%) taller.
Rim sizes 17x7.5 to 17x10 18x7.5 to 18x10.5
Circumference 2525 mm (99.4'') 2647 mm (104.2'')
Revs per mile 637.5 608
Speedometer Assuming that this is OEM tire and speedometer readings are correct >>> When speedometer reads 60mph (96.6km/h) actual speed will be 62.9mph (101.3km/h): 4.8% faster.
Typical Weight ~ 47 lbs / 21 kg ~ 51 lbs / 23 kg
Wheel+Tire Weight ~ 69 lbs / 31 kg ~ 81 lbs / 36 kg
Clearance: Package 1 Package 2
Suspension Assuming that this is OEM wheel/tire and there is no any problems with clearance on both sides >>> 100% clear (leaves even more room than OEM)
Fenders Package will stick out 24 mm (0.9'') farther. Make sure that you have enough room under the fender. If not, consider narrower tires or higher offset.
Wheelwells Will fill out the wheelwell by extra 20 mm. Make sure that you have enough room under the fender. If not, consider lower profiles or smaller rims.


this is with a 12 offset will fill 20 more MM of the wheel well. i think i should be good with this size i hope so at least. theres a lot more that goes into this than what i expected i mean my tires now i think are 31.7 over all diameter and 17in wheels so really im only adding about 2 inches with 18 in wheels and 33.4 inch tires so im pretty sure it will all fit