what gears do I have?

[Slowsupratt]

I'm assuming my gears are stock, as far as I know they are. I have 19's in the back with 345/30/19's so that does affect my gearing from stock. When I travel 65mph in 5th gear my RPM's are at 2k. Does this equate to stock gearing? Thanks in advance.

 

[Steve 00RT/10]

I have 19" MPS with stock 3.07 gears. The tire OD is 27.4" 2K is 72 MPH (by GPS)...and my Unitrax speed calibration unit.

You need to measure the OD of your tire and then got to an online gear calc. site. My guess is you're not stock.....or .....19" tires were put on and no new speed calibration done.

Steve

 

[plumcrazy]

forget how right now but dont you jack the car up, turn the drive shaft one time and count how many revolutions the tire makes or something like that?

 

[eucharistos]

yes, jack up rear, but i think you turn the wheel and count the drive shaft revs, easier to turn wheel, leverage and all