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Old 06-01-2018, 03:24 PM
e39_touring e39_touring is offline
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Quote:
Originally Posted by PropellerHead View Post
Are these OE style 87's or replicas?

I think the culprit is those runflats. My bet is they're way more than 41lbs. Great for the practical application, but runflats are notoriously heavy. Not usually a big deal on a car like the X5, but certainly noticeable on a 3.0.
Revisiting this, and PropellerHead was right-on. I swapped out the Bridgestone runflats for non-RFT Continental DWS, and boy what a difference! The small-imperfection harshness is practically gone, and the car feels more nimble again.

I weighed the runflat tires coming off at 38.6 lbs front and 43.2 lbs rear.

Replacement tires weigh 28.9 lbs front and 33.3 lbs rear with more tread - a savings of 10 lbs per corner!
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2001 BMW X5 3.0i 5MT
and two 1987 Corvettes - Callaway Twin Turbo and Guldstrand Grand Sport 80
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