98sivlerbullet

iTrader: (1)

I used a tire gear ratio calculator and from the looks of it I have 3.73. I run about 2400 rpms at 70 mph and 80 at 3000 rpms. RPO codes say I have a 3.23 but I bought my car used so 3.73 might be in there. Anybody out there run 3.73s out there that can tell me there mph v.s rpms? Car is a A4

baalic

iTrader: (8)

Tire size is?? I think I ran around 2250 or so with 3.23. Stock tire/wheel size @70. It's been a while.. With 3:08 in my sixer I'm at 1950 with a 245/50 vs the 235/55" stock"

98sivlerbullet

iTrader: (1)

O yeah I forgot to put the size 275 40 17s

philsblwnz28

iTrader: (10)

open the diff cover and look at the ring gear. I have 3.73 A4 w/ 275 40 17 and i know its quicker than my old 3.23 rear. lol