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      05-07-2012, 11:45 AM   #21
stefan's Avatar

Drives: E92M3
Join Date: Feb 2008
Location: Calgary

iTrader: (2)

Garage List
2011 BMW M3  [4.17]
1999 BMW M3 VF  [5.00]
2016 BMW X1  [0.00]
2001 BMW M5  [0.00]
Why do people increase their redline? Is it really worth it? Any dyno graphs to support it? Sorry to derail; just curious.

Originally Posted by CanAutM3 View Post
The tach on the M3 does not indicate actual revs. The M3 cluster was taken straight out of the E60 M5. This is why we see a red line at 8250RPM (the M5 red line). The engines revs are corrected so that when the needle hits an indicated 8250 the engine is actualy spinning at 8400RPM (the M3 red line). You can actually see this by accessing the hidden menu and look at actual revs.

So the OP question is very pertinent. With an increased cut off to 8600RPM, does the needle on the tacho go past 8250 or does an indicated 8250 now correlate to an actual 8600RPM?
Great info! Thanks!
///M Power