View Single Post
      03-19-2012, 08:24 PM   #6
Kgolf31
Brigadier General
Kgolf31's Avatar
460
Rep
4,531
Posts

Drives: 2007 Z4MC, 2012 128i
Join Date: Sep 2008
Location: Ohio

iTrader: (4)

I launch around 2000 on hot tires.

To be honest, there is never a "set" number on what you aim for...as I learned this last year. I tried to launch the same RPM on airport tarmac and bogged it hard.

What I do, when I have cold tires, is launch at 2500 RPM. My first run is always a throw-away...if it's my fastest of the day there is a huge problem. I will get to my RPM up to around 2500 (sometimes I go even more), and dump the clutch hard. I never ride the clutch out. I go full WOT.

This, obviously will spin the tires, and usually most of the time it'll grip hard. If I feel the car spinning too much, I'll let off the gas a bit til I feel it grip and get back on the gas ASAP. That'll get heat into the tires and I'm usually good to go after 2 runs when my tires are at temps.

When I'm launching correctly, I get alittle squeal and get grip fast. Everywhere I've been, you have to line up at the cone...there is no extra room to launch. I try to get power down asap
Appreciate 0