Well my stock Continental Contitracs are off to be ground down and made into playgrounds. At 45K miles, they were cupped, feathered, etc. Vibration that couldn't be balanced out, loud wah wah wah noise. I have had problems with them since the first rotation. Three of them had radial pull and there was only one combination that would result in a straight track. The alignment is dead on.
Put on some BF Goodrich Long Trails and couldn't be happier. Quiet, smooth, no vibration. Got them for $144 each after rebate at Discount Tire.