Tire sidewall separation, just below the tire bead. The make of the tire was a Michelin Pilot sp, PS2, zp.

- Philadelphia, PA, USA

This is the third tire, on my car, from this manufacturer where the sidewall has failed. Side-wall separation. Each tire is the same model.

- Philadelphia, PA, USA

I had to replace two tire, one front and one rear, for the same problem. The problem was that both tires had sidewall separation in the same location, where the sidewall attaches to the tire bead.

- Philadelphia, PA, USA

The contact owns a 2008 BMW 335I equipped with Michelin energy LX4 run-flat tires, size: P225/60R17. The contact stated that the tires exhibited small punctures and would become flat frequently. The contact was unaware of the cause of the constant tire failures. The failure mileage was unavailable. The VIN was unavailable.

- San Rafael, CA, USA

Serious problem, I can not drive and can not replace blowout, broken run flat tires from Bridgestone on my '08 BMW 328I. It's the 4th warranty coverage replacement in 6months but this time it is out of stock at my costco tire where I purchased them and was told by the maker, Bridgestone tires that there's 18,000+ backorders on these tires and they have no idea on eta.

- New York, NY, USA

The front oe tires on my 2008 BMW have developed sidewall bubbles. The tires are Bridgestone potenza re050A, 225/40 R18. This is inherently dangerous. There are already some bridgestones which the company has recognized as faulty, the above models should be added to their list.

- Philadelphia, PA, USA

Sidewall separation (right front) on Bridgestone size 225/40R18 reo50A original equipment run flat tire at 20,000 miles. These tires seem prone to delamination. Very poor tread mileage for highway driving. Worn out now. Utqg rating seems exaggerated as I'm not in stop-and-go driving mode. These tires are priced $70+ to $90+ per tire more than non-rf tires and B'stone has a virtual monopoly....BMW N.a. only permits replacement of these tires and it really hits the pocket book. Contacted B'stone consumer relations and met a brick wall as they know they have you over a barrel. Wrote the pres. Of Bridgestone and not even the courtesy of a response.

- Torrance, CA, USA

Continental run flat tires new with new 328I BMW sedan purchased in 2008 had tread worn down after 8100 miles, as noticed when vehicle was brought in for servicing. Tires were replaced by dealer. Research on the web showed a large number of individuals reporting similar problems: www.bmwrunflattire.com; forums.automotive.com/70/6318820/BMW/BMW-run-flat-tires/index.html.

- Washington, DC, USA