A few weeks ago I noticed my rear end bouncing at low speeds and shaking at high speeds. I thought I was loosing a belt so I took it in today. Turns out I was losing one on 2 of the tires. I went ahead and replaced them all with BFG T/As, 31". Also, I'm never buying coopers again. Sure the tires were a few months shy of 5 years, but they had a ton of tread left so they didn't have many miles on them. Drives way better now and looks a far bit better now too.