I 'm thinking of getting a 12 bolt and can't decide on what gears. I have an A4 and running nitrous. I have 4:10's in right now and don't have enough gear in the 1/4.(I go throught the lights in OD). So I was wondering what gears everyone is running w/ the juice, and what rpms.

 

I would think you would want something like 3.73's so you can trap in your 1:1 ratio gear (3rd) instead of your overdrive gear.

 

I've got 3.73's in an A4 and am still having that same problem. My revlimiter is at 6000rpm, and it'll hit that just b/f the end of the 1/4. I'm running 17in wheels with 275/40 tires, i guess the o.d. is approx. 25.5in. You could step it up to a 26'' tire or 28''.

 

That what I was thinking. I not for sure if the 3:73 would do it.