550 M-Sport Goodyear Excellence Tire Problems

I am well aware of the X cars M sport 19" LS2 problems. I have a 2011 550 M Sport with Goodyear Excellence Tires. After 18 months and 7000 miles I discovered side bubbles on both front tires. Anyone else experience the same thing?

Bubbles can happen on low profile tires no matter the construction. I had them happen on my Conti DWS's, which are not run flat tires (same size as yours).

nature of the beast with that little rubber.

Originally Posted by sheldonzane64

I am well aware of the X cars M sport 19" LS2 problems. I have a 2011 550 M Sport with Goodyear Excellence Tires. After 18 months and 7000 miles I discovered side bubbles on both front tires. Anyone else experience the same thing?

You purchased a wheel and tire warranty, right? That should square that away...

Goodyear will pro-rate and replace but I am thinking of switching to Michelin Non RFT. Any comments of running all four the same size as compared to staggered?

Originally Posted by sheldonzane64

Goodyear will pro-rate and replace but I am thinking of switching to Michelin Non RFT. Any comments of running all four the same size as compared to staggered?

Debating this myself. The problem is a lack of traction with the 245 rear tires. I experience some slip in my 535...I would imagine that on your car the 245's would not be enough to contain 150 ft-lbs more.....

Needsdecaf;

You bring up a good point as even with the staggered setup there is slight slippage. Thanks.

Thank Dunderhi.

There is indeed some slip. It's very easy to break away the rear, and therefore difficult to launch it properly. I switched to conventional Michelin Pilot Sport A/S Plus, same size as stock, staggered, on standard sport rims. I've even had problems with these tires with a pothole I hit. However, even that experience was much improved over the RFT. With the RFT hitting a pothole at a much lower speed, I experienced a loss in pressure and had to limp home. When I hit a pothole in the Michelins at around 60-70 MPH, the tire stayed together and I was able to ride on it for a while. It experienced a dreaded bubble, but the only difference in driving I experienced was a lot of vibration. I had purchased tire insurance as was able to get it replaced. Now I think the rim is bent, since I still get some vibration. I'm waiting until the pothole season clears up before I get it straightened.