Bimmerfest - BMW Forums - View Single Post - First 1/4 Mile Results and Questions
View Single Post
Old 10-20-2012, 06:53 PM
TDIwyse TDIwyse is offline
Officially Welcomed to the 'Fest
Location: Midwest
Join Date: Sep 2010
Posts: 429
Mein Auto: 4 diesels
It's definitely higher than what a lot of others run them at. Had read best results come from using the most psi as possible while still getting good grip (more psi gives less rolling resistance). From the previous Gtech testing it seemed a ~2 sec 60' time was achievable with 25-30psi in the Hoosiers, and that time point was what it looked like would be needed to get into the mid 12's. The slush box tranny really reduces the violent start compared to dumping a clutch in a stick so ... used more psi.

Could probably break boost higher rpm's and run lower psi's to improve the 60' and improve the ET. But dang, that's a lot of stress on things.
2011 335d 11.8 sec 120 mph 1/4 mile NHRA certified track

2004 Ram Cummins with lots-o-mods
Reply With Quote