Those are BIG tires--28.1" diameter vs 25.7" for the stock 245/45-17s--740 revolutions per mile vs 810.
This will make the speedometer read slow by almost 10% (the car will be going 10% faster then the speedo says), and there will be a nearly 5% reduction in torque to the ground; also because of the larger diameter...
- 2003 GT, UPR X, FRPP 24lb/h, Magnaflow, PP 70mm TB & plenum, Delta Force tuned,
Steeda UDPs, Ralco flywheel, RAM HDX clutch, 3.73s, 262 rwHP/305 lb-ft.
New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq