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Old 12-05-2012, 08:02 PM
Rickm5X3 Rickm5X3 is offline
Prefers bhp over mpg
Location: Colorado
Join Date: May 2008
Posts: 414
Mein Auto: E70 X5M and 4.8i
Originally Posted by ktono View Post
I wonder what the ride stiffness, comfort will be with the 20" wheels and the Sport Activity.

Great engine that you picked; congrats! As for the question above -- I'm not a fan of Bridgestone RFT with 20 inch wheel option and non-sport suspension. Tires seem to deflect on certain impacts instead of being compliant, and high unsprung weight of the 20 inch wheel coupled with non-sport shock tuning is an odd combo. Seems like damping was optimized for something less than a 20 inch wheel. Running 18" wheels with narrow non-rft winter tires now and much happier wiuth the E70 suspension. By comparsion my 4.8is suspension feels dialed, even with the weighty 20's.
2011 X5M Alpine White/Sakhir Orange, Eucalyptus, Spare tire!, Comfort, Soft Close, Tech, Climate Package, Individual dash, Individual Audio, HUD, DVD, USB, Cold, OEM hitch
2008 X5 4.8i Space Gray/Tobacco, Premium, Sport (includes AD), Active Steering, HUD, Tech, Comfort, Cold, Climate Package, 3rd Row, Prem Audio, running boards, OEM hitch

2005 X5 4.8is
2004 X5 4.4i Sport
2004 X3 3.0i 6MT
2002 M5
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