2 years ago I made the mistake of purchasing new wheels and tires from Discount Tire. Been dealing with the worst ride ever, re-balancing and re-balancing the tires ever since. I called around to find a shop that would do on-vehicle balancing to see if that would help. I was very sceptical when Mark at Tire Works said I needed new tires that were the right size for the wheels. But when he said I could return the tires if it didn't work out, I had nothing to lose. My Tahoe has never rode better. Can't thank Mark and crew enough.