I had a flat a while back in one of my run-flats. A local America's Tire store patched it for me - said "no problem."

It's developed a slow leak now, it's gone from 36 lbs to 28 lbs in the last few weeks, enough to trigger the FTM.

I saw some comments a while back about RFs not being repairable. Seems like a tire's a tire's as it relates to nail damage in the tread - not the sidewall. Any reason these wouldn't hold a patch properly?

 

I had a slow leak/puncture on one of the run-flats and it appeared to be a porous alloy. It lost 10lbs in 20 days. I rang the dealer and he said he had come across a few 'porous' alloys. I called in and he checked the wheel/tyre but couldn't detect the leak. As there was only 800kms on the car, he swapped a new wheel and tyre for me then and there.

I think for security sake, BMW will recommend a tyre replacement after a puncture. At about ?350 a corner, punctures could get very expensive. However, as with other tyres they have to re repairable. Because of the strenghhened sidewalls, the only issue I would have is - do the tyre centres have the right equipment to remove the tyre from the rim w/o causing damage to the rim itself.

 

A friend of mine is a manager with Dunlop UK and he tells me that our E60 Dunlop runflats are as repairable as normal tyres provided the Tyre repairer has the correct equipment for removing tyre from the rim and provided the operator has been on the necessary training course. My friend reckons that most medium sized towns in England have at least one approved repairer. My friend is convinced that within 10 years the majority of cars in Europe will be running on run flats so as to save weight in carrying a spare plus jack and because of the obvious safety benefits ( i.e. life expectancy on motorway hard shoulder 20 minutes!!! ). I personally find my 116 style 17 " alloys fitted with Dunlop run flats are quiet and comfortable at 6500 miles.
Mark-Yorkshire

 

Mine at almost 9k miles are getting very annoying. I think the cold weather doesn't help - even the wife remarked the other day about the noise! (Kind of a rubbery 'crunching')

I have the 124 18"s (245/40 & 275/35) - these may be the noisiest option

I can't wait to ditch mine but I want to remove a decent amount of tread first! (They are wearing annoyingly well - still 5mm tread)

The ride and handling takes a knock, my summary on another group the other day was 'great idea' but noisy, heavy, harsh and expensive!!! I think BMW have made a big mistake in making them mandatory The new 3-series is going to get slated for them too

 

Perhaps I should be using more throttle!

 

Ive got 7,000 on mine, and they are wearing decently. Im gunna need new tires in a few thousand miles. Proabably around 10k. BTW, mine a brigestone 16's.