The stock Pirelli's are worthless. Sell them to someone you hate.

Go get something else. Almost anything will be better. I went with Michelin Pilot Sport A/S on my '07 GT and after putting those on I couldn't throw the Pirelli's away fast enough!

 

I have to say I've ran my poorelli's through 2 winters and they did the job for me. Are there better tires out there for winter use I'm am sure. I have replaced two of the stockers (rear tires) with some low mile take offs from a member on here for 100 bucks. Couldn't beat the price so I stuck with them.