My new (to me) 2004 4.4 Sport has the 19" wheels with brand new Michelin Diamaris tires. My BMW Factory Tech friend tells me the Diamaris have a VERY stiff sidewall, which it appears I am feeling in the ride.

Has anyone had the Diamaris' on their X5 and then switched to another tire? How did the ride of the Diamaris compare to other tires you have used?

Thanks!