I decided to go with Michellin LTX M/Ss over the A/Ts as I do mostly highway driving and maybe hit snow on ski trips once or twice a year. Its nice to feel new rubber on pavement and probably gain a little mpg! Rant: I've always bought 4 tires at the same time, but yesterday I only replaced 2. One tire had a gash (replaced free w/ Discount Tires warranty ) going down into the sidewall a bit. So, following the "rule" of replacing two instead of just one corner, I chucked the damaged one and replaced the worn and old spare with the still good tire. Now the 2 older A/Ts I still have on the rear have maybe 10-15K left on them. I guess I'm being anal but it sort of tweaks me driving with unmatched tires and having my rotation/balancing schedule messed up! Anyone else feel this way? BTW...at this point I have 52K on the A/Ts...GREAT WEARING TIRE!! MUCH better than the Goodyear RTSs which HAD to be replaced at 42K! I'd highly recommend the Michellin LTXs!