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Old 01-08-2012, 01:05 PM
jadnashuanh jadnashuanh is offline
Officially Welcomed to the 'Fest
Location: NH
Join Date: Jun 2011
Posts: 1,557
Mein Auto: 535ix-drive GT; i3 BEV
The TPMS should alert you when the pressure has dropped, and way before it is actually runflat unless it is a catastrophic failure. In that case, you'd probably hear the explosive noise when it fails. But, to mitigate liabilities, most places will not fix a run-flat, regardless.

TireRack tested a third gen Bridgestone runflat that shows a lot of promise...almost indistinquishable from the similar designed normal tire. They made the sidewall somewhat more flexible by incorporating alternating bands of softer material especially designed to dissipate the heat from running flat, so it can flex more and still perform its job. This may be the harbringer of better things to come. I doubt BMW will go back to non runflats, but expect runflats to improve.

FWIW, my Michelin runflat snows (PA2), with their softer tread, ride a bit better than the Goodyears that came with it with only a minor penalty in handling. they are a little vague in straight ahead, but it is a very slight difference.
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