Stock M5 Hits over 60mph in 2nd, right? - The Unofficial BMW M5 Messageboard (m5board.com)

IRISH M5 · 4th May 2007, 03:46

My stock M5 hits over 60mph in 2nd gear. I am being told that putting in a 3.45 diff reduces a shift to 3rd to hit 60mph.

See thread Dinan 3.45 Diff Delimna

doug · 4th May 2007, 04:36

tristan · 4th May 2007, 04:45

mine too. I thought the interest in 3.45 diff had more to do with performance thru all gears though not just the 0-60.

CSBM5 · 4th May 2007, 12:43

Stock M5, redline in second = 68mph.

WylM5 · 4th May 2007, 13:53

No it does not. A 3.45 diff will cause you to shift earlier, although not before reaching 60MPH. Not sure what my max speed is in 2nd but I know it's over 60.

CSBM5 · 4th May 2007, 13:55

Quote:

Originally Posted by WylM5

No it does not. A 3.45 diff will cause you to shift earlier, although not before reaching 60MPH. Not sure what my max speed is in 2nd but I know it's over 60.

Stock M5 (3.15 diff), 7000rpm = 68mph; with 3.45 diff, 7000rpm=62mph.

mottati · 4th May 2007, 19:04

Quote:

Originally Posted by IRISH M5

My stock M5 hits over 60mph in 2nd gear. I am being told that putting in a 3.45 diff reduces a shift to 3rd to hit 60mph.

See thread Dinan 3.45 Diff Delimna

You're misunderstanding that thread. The point is, with the 3.45 diff, you can 'still' hit 60 in second gear, whereas, if you went with, say a 3.91 (and stock redline) you'd be required to shift to third.
Mike