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Old 10-03-2010, 09:43 AM
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Stealth.Pilot Stealth.Pilot is offline
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Location: Florida
Join Date: Jul 2009
Posts: 4,581
Mein Auto: 2014 M5
Originally Posted by dadesidon View Post
doesn't x-drive create extra weight thereby slowing it down?
I think traditionally that has been the case - especially with lesser powered cars like Audis and 325xis. But when you have 400hp on tap, the impact of the weight on the power:weight ratio is negligible and the benefit of being able to deploy the torque to four wheels instead of two is significant.

As an example, according to Porsche:
The 400hp Porsche Panamera S does 0-60 in 5.2 seconds and weighs 3968lbs.
The 400hp Porsche Panamera 4S does 0-60 in 4.8 seconds and weighs 4101lbs.

If you had 200hp and a lighter car like an A4 or a 3 series, then the 133lb difference may affect the acceleration, but at this weight and hp level, the traction level of four wheel drive makes a difference.

That said I still prefer rear wheel drive cars because the handling characteristics are more fun.

2014 BMW///M5 Individual
Frozen Grey, Silverstone Full Merino, Piano Black, Exec Pkg, Drivers assistance pkg, LED Package, Bang and Olufsen, 20" Forged wheels
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