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      09-26-2012, 07:32 PM   #14
Tom K.
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Drives: '07 328iT, '13 Boxster
Join Date: Mar 2008
Location: Maryland

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Originally Posted by capri View Post
is it also true that if you hit the nail or puncture the run flat tires, it can go another 150 miles and a slower speed ?
How does one fix a run flat tire ? say it was punctured by a nail or glass or something sharp ?
Thanks in advance.
A RFT may be repaired like any other tire, unless it has been damaged by running while flat. Since most punctures result in a slow leak, some of us carry a 12 volt compressor so that a punctured RFT may be re-inflated en route to a repair facility and the tire safely repaired. The TPMS should warn you when a tire is deflated 25% below the base setting.

Since they cannot tell if it has been internally damaged, BMW dealers will generally not repair RFTs, but some tire shops will.