06-21-2005, 05:33 PM
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Officially Welcomed to the 'Fest
Location: London
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Join Date: Oct 2002
Posts: 2,587
Mein Auto: 318i
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Quote:
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Originally Posted by CenterBmw
Also the M6 is a high reving V10. With an automatic even on steptronic mode, the driver wont be able to reach the High Rpms that the car was meant to excell in.
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Indeed. The limiting factor would be the gearbox innards so you'd have to have your 8,500 rpm-capable engine limited to 7.something. I can't actually think of any automatic which revs that high; the high-test Honda VTECs aren't available with auto; only the lower-tune RX-8 has an auto option. The only ones I can think of which compare are automatic Porsche 911s (997); but even they don't come close to the M5's max crank speed, topping out over 1,000 rpm lower.
Of older performance automatics with revvy engines, the NSX's automatic (shudder) had a detuned engine; the 456GTA similarly, and the Merc 190 Cosworth featured a lower redline when a four-speed slushie was specified. So the odds of an automatc M5/6 will shorten only when BMW switches to forced induction and a good ole single TB, or ZF et al figure it out. Whichever comes first...
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