DNTBJELOUS

iTrader: (2)

Currently my car is about 425 RWHP & 375-380 ft/lbs of torque & it is a 6 Speed. Planning to put the car on a 26 inch slick this coming season. My rear end gear is the only other thing hurting me in this equation though, at least this is what I believe. The rear end is a Strange S60 with a 3.54 or 3.55 (correct me if I am wrong). I believe this is way too small of a gear for the rear end with the 6 speed set up that I am running. Any opinions?

HCI2000SS

iTrader: (2)

I run a 4.10 gear on a 6-speed with about the same power as you and love it!

guppymech

iTrader: (7)

Yea, you definitely need some 4.10s or the same series carrier will take 4.30s. Saw your tire thread, with the M6, bias plys for sure.

DNTBJELOUS

iTrader: (2)

I was leaning towards the 4.10 rear end gear set up as I have a daily driver if this becomes not streetable. I don't drive it that far but I do enjoy taking it on cruises every so often & not just taking it to the track.

FirstYrLS1Z

iTrader: (4)

4.10s' with a 6 speed is a very popular combination for a daily driver.

DNTBJELOUS

iTrader: (2)

Highway usage it's decent?

FirstYrLS1Z

iTrader: (4)

1600rpm at 60mph makes A4s' jealous !

DNTBJELOUS

iTrader: (2)

That's true haha well 4.10 it is then! Reasonable price for labor to install the gear?

Fry_

This should help you see the effects of gear and tire changes.
Gear Ratio Calculator