I just rented a Ford Focus in a rust-belt state with 31K miles from a well known nationwide rental firm. I needed to drive the car 3 hours farther north for a family event and was surprised by a load roar coming from the left front while on the highway. Once at my destination, the car exhibited vibration and a growl from the same corner at 30 mph. The tire was smooth all across showing no cupping or abnormal wear. I stopped by the local Ford dealer to confirm what I thought was a failing LF wheel bearing. The service writer confirmed the bad bearing and offered to fix it under warranty (a '13 car) if he had the part. He didn’t have one in stock.
I called the rental company and 2.5 hours later they replaced it with another Focus with 29K miles and a roar from the right rear. No vibration this time but the tire 4 tread block groups and the 2nd one from the inside had wicked uneven wear. Both cars were equipped with Cooper Zeon tires. I’ve never seen Coopers as an OE tire before (I consider them low cost replacements) nor would I expect a bearing failure that early (yeah, it could be the enormous potholes in that state). I like the car and would consider owning one but has anyone else here had these kind of experiences with a Focus or Cooper Zeon tires?