Originally posted by DemonSVT:
Originally posted by bnoon:
For a street tired car, the taller Zetec gear will help you hook up easier because you can grunt the engine into pulling the car instead of going up in smoke. It's a LOT easier to launch.



However it is going to slow down acceleration in every gear as a drawback! (less torque multiplication factor)

I found the change from 215/50 (yes quite worn out) to 225/50 changed the "effective" final drive more then I would have figured! Also the fact that BFG under rates the diameter of their 225/50 KDW tire quite a bit!

The added traction is great though, but I could not see dropping to a Zetec gear without some major power adding. (I.E. Forced Induction! Not just a 3L!)



I've got proof of dropping 60 foot times using a taller gear ratio on street tired cars. My car has problems hooking up 235/40/17's as I did on these other cars and I would expect the same results doing a gear swap on my car. Sure, third, fourth, and fifth would suffer, but who cares... as long as I win the race. Take the torque away from the tires and they stop spinning which equals more forward motion. If you can't hook them up, lower gears get you nowhere in a dragrace but on the trailer early.

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