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      08-14-2012, 02:42 PM   #11
GCDC
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Drives: 2007 Z4MC
Join Date: Jun 2012
Location: DFW

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You're MPH works out to about ~370 whp.... 500 bhp should translate to about 420 whp which should put trap times closer to ~118...

E.T. and 60' times will not change trap speeds much unless there was a completly busted launch, and the easiest way to judge HP (and highway performance) is with trap speeds. I'd imagine with some more time at the track you should be able to get in the 1.8-9s 60' time which would put you in the low 12s no problem.

If you are worried about E.T. it's all about trial and error. Most street tires do not need a big burn out to get to the right temp. but you will need to adjust tire pressure to find out what works for your car on each track conditions.

What I've found that works best on street tires is a high RPM launch with slipping the clutch for traction/control(a little spin is better than bogging).
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