You were very smart in keeping the old tire. After a series of blowouts on our TT with Brigestones, the last one took out the fender skirting. We verified with BFG that they didn't need the tire and we could leave it with the dealer, 1000 miles from home. Well, they lost the paperwork and guess what, no tire, no payment! They seem to have no problem in working with you on the tire replacement, but when it comes to body damage, stand by. You need to read the fine print, you are responsible for keeping the tire.