If I am going 72 mph in fifth gear running 215/55/16 (I know, the 245/45's are on the way) and am at 2000rpm what is my axle gear size? It is a world class T-5. Free liftime supply of absolutely nothing to the first right answer
speedo is still gonna be off with a 245/45/16 tire...if you are going to 17's, a 245/45 is what you want, but if sticking with the 16's, you need a 245/50
Thanks 86roadrace I guess the previous owner lied because according to the calculator my car still has 3.08's. So I guess I will have to get a yellow spedo gear - 24" tires, 2000rpm in fourth w/3.08 says 46 mph and that is what the car was doing.