MT et street radials are on a nationwide backorder, have been since last october
except for a few of the less popular sizes youll have to do a lot of searching and maybe trade in some favors to get ahold of a set of 275/60s that someone might have stashed away and dont expect them to be cheap , last i heard was 500 a set on the few 28s left
check this thread
http://www.turbobuick.com/forums/bra...ack-order.html