i have a 1990 325i and when on the highway at about 80mph in 5th the revs are a little over 3K. I was thinking this is high? I have the oem diff and 16in rims will the rims make it rev higher at highway speed. I should know this but my other car is on 18 and has a 3:91 so i don't have anything to compare it to.
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You've never seen this? Its the first thing that pops up on google. Type in your tire size vs OE. Wheel size should not really make a difference because the tire should be proportional to the wheel. This is really basic stuff.www.blunttech.comOriginally posted by b3albakii -
What is the ratio on your OEM diff?‘Tis by the grace of God that my cars run!Originally posted by LJ851
Siobhan's Build Thread - UPDATED!Originally posted by unloadedak
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