R50/53 Run-Flat on Flat life?
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Run-Flat on Flat life?
Wrong forum, I know. But I need an answer urgently. How long can you ride on a run-flat that is flat? Air is leaking from out of the tire just around the rim so fix a flat isnt going to help.
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Here's the 'Official' answer from page 101-102 of the 2005 MINI Owner's Manual (the online edition for part #01-140-158-427):
Continuing driving with a damaged tire
Depending on the load, you can continue driving with Run Flat tires at a maximum speed of 50 mph / 80 km/h.
If there is a total loss of tire inflation pressure, 0 psi / 0kPa, or obvious tire damage, you can gauge the mileage for continued driving on the basis of the following indications:
> With a light load: 1 to 2 persons without luggage: approx. 155 miles / 250 km
> With a medium load: 2 persons, full luggage compartment, or 4 persons without luggage: approx. 90 miles / 150 km.
> With a full load: 4 persons or more, full luggage compartment: approx 30 miles / 50 km.
Warning!
Drive cautiously. Do not exceed a speed of 50 mph / 80 km/h. In case of tire pressure loss you must expect changes in vehicle handling such as lower track stability during braking, longer braking distances and changes in self-steering properties when close to the handling limt. For safety reasons, the manufacturer of your vehicle recommends hot having damaged Run Flat tires repaired. IN this case, consult you MINI dealer.
Do what you can to keep air in it, though. Unless you're planning to swap them out - driving on it flat does degrade the structural stability (hence the mph/mile limit.) You can get a compressor that plugs into a lighter socket for ~$15. Has this been a constant issue, or did something precipitate the leak?
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The light has come on once prior, the pressure was off by a little so I thought no big deal. Then on my way home today it came on again, checked the pressures to find 25, 30, 25, 0.
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