Hey everyone. I am a few weeks away from getting my 2013 Road and Track with Super Track Pack. I know the regular R&T comes with Firestone Firehawk GT 245/45R20 and the STP deletes those in favor of Eagle F1 Supercars in the same size.
Smart move requesting some all-season tires, but the dealer is trying to screw you.
The Eagle F1 Supercars are great tires, but they get slick in cold weather, even without any snow or ice on the road. They are worthless in snow.
My suggestion, which is what I ended up doing myself: get yourself a set of winter wheels. If you can spring for it now, this will pay off in the long run. Keep the 20" wheels and tires mounted, but take them off the car. Buy some 18" wheels for the winter months. 18" all-season or winter-only tires get a lot cheaper than 20" tires, and you can get them in the same speed ratings.
Look on eBay for a set of nearly-new take-offs from a Charger R/T or Challenger R/T. I paid $1000 shipped for new Challenger R/T wheels, with all-season Michelins and TPMS installed. Wheel shops will often put custom wheels on a brand-new car, then keep the OEM wheels and sell them on eBay.
If you go this route, you will want to get the TPMS sensors that work with a 2013 computer, and you will have to get them mated to your car (each sensor has its own serial number that the car reads -- a dealer or a tire shop can do this). If you don't
get new TPMS sensors, then you need to either swap in the ones from your wheels (and pay for the labor), or deal with the "low tire pressure" idiot light and EVIC messages.
My 20" wheels with F1 Supercar tires are sitting in the garage, ready for springtime.
Oh, and I really don't feel much performance difference with the 18" wheels vs. the 20" wheels. They aren't as sticky, but the OEM Michelin tires are V-rated.