Thread: Run Flat Tires
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Old 12-01-2012, 05:53 AM
quackbury's Avatar
quackbury quackbury is offline
///Monkeyazz Duck
Location: Not In Kansas Any More
Join Date: Dec 2005
Posts: 5,268
Mein Auto: 535i; 428 GC; Twin X1's
Non Run Flats handle BETTER than Run Flats. The suspension absorbs bumps better, due to their lower unsprung weight. The vehicle will accelerate and brake (marginally) better, due to their lower rotational mass. Non-RFT's almost always have softer sidewalls than RFT's so the ride will improve. (My X5 actually rides better on my non-RFT snow tires than on my RFT summer performance tires). Plus non-RFT's cost less.

So why does your dealer lie to you? Maybe because BMW won't allow him to stock and sell non-RFT's (at the typically grossly inflated dealer prices), so he knows if you mount them he will lose the chance to bend you over when they wear out.....

EDIT: To be fair, there IS one time when RFT's will handle better than non-RFT's: Namely, when you have a flat. BFD.

Current BMW's:
2017 540i MSport
2016 428 GC MSport
2015 X1 28i xDrive
2015 X1 35i xDrive

Prior BMW's
2014 535i MSport
2014 328i SportWagon
2011 535ix MSport
2011 X5 35D
2008 ///M3 Vert
2008 X5 3.0
2007 X5 3.0
2006 X5 3.0
2006 550iA SP
2003 540iA M-Technic

Last edited by quackbury; 12-01-2012 at 05:55 AM.
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