That equates out to a 13.5-13.6 1/4 mile time so that's real good for a stock '08 135i, especially with the 1.9 60'. People have issue's with launching this car because of it's IRS but with a pair of DRs I'm sure you could knock the '60 down to 1.8 probably even 1.7. Then you should drop your 1/8 mile time down by .2 for sure.
Did you lower the tire pressure any? But I'm sure you did since you said you have a lot of experience at the 1/4 strip.
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