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, Eucalyptus, Spare tire!, Comfort, Soft Close, Tech, Rear Climate, Individual dash, Individual Audio, HUD, DVD, USB, Cold.
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