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Old 10-05-2018, 01:49 PM
apw2607 apw2607 is offline
Join Date: Dec 2005
Location: Seattle, WA, USA
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Originally Posted by ard View Post
I wouldnt.

Handling will be worse; ride harsher; more likely to damage rims on potholes.

Its an SUV for chrissakes.

I completely disagree. Ride will be *improved*. The problem is the run-flats. Not the size of the rims.

OP - You will need to optimize the tire pressure as a slight variation tends to have quite a large effect on the handling with the Conti. I recommend 35 psi in front and 38 in rear with the 20" rim and Conti DWS. Tested with the BMW OEM 214 rim

If you have the dynamic handling system, it will be even less noticeable due to the active dampers and anti-roll stabilization.
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