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Old Jul 12th, 2013, 10:20 PM
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Run Flat Question

Hi All

I know there have been a million and one posts about run flats...but I can't seem to find an answer to one particular question.

I recently replaced 2 front tires on my Mini Cooper 07 plate. Shortly after the run flat indicator appeared. I know this can occur, so I checked the pressures on all the tires.

The front two were fine, but the 2 rear tires were quite low (one was 1.4 Bar and the other 1.1 Bar). To be honest I can't remember the last time I checked them so they could have been like that for a while.

I reinflated and checked later that week to see if any pressure was lost, but at the end of the week the pressures were all the same.

A month later the run flat indicator popped up again, I checked all 4 tires and the pressures were still spot on.

The question I have is this

"If you were to inflate a run flat initiated tire, would it subsequently lose pressure?"

Any help is much appreciated. I might take it down the garage, but last time I did they didn't seem to have a clue.

Cheers
Sam
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Old Jul 13th, 2013, 09:09 AM
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All tyres (normal or runflat) can have slight leaks or loose pressure over time.....a common reason is surface corrosion on older rims where the tyre bead sits or slightly porous alloy rim also due to corrosion or surface damage to the coatings....either just adjust the pressure when required and live with it.....or if it happens too frequently and bothers you then replace the tyre and/or wheel rim (expensive) or have them closely checked re-fitted and maybe refurb the rims where the tyre bead sits.
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