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.
Originally Posted by ktono
I wonder what the ride stiffness, comfort will be with the 20" wheels and the Sport Activity.
2011 X5M Alpine White/Sakhir Orange
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 Imola Red, Nav, Nappa, Comfort seats, OEM hitch
2004 X5 4.4i Sport (sold)
2004 X3 3.0i 6MT (sold)
2002 M5 (sold)