:nice: What she said!
I bought snow tires for mine. They help enough. And even if you're not getting anywhere fast, fun is only a stab at the...
I've got Eagle F1 GS-D3 275/40's all around. They find all the imperfections in the concrete but it's not bad. And it is a lot of fun on the track.
Zaino Bro's (www.zainobros.com) I've got a coat of Z-5 and 2 coats of Z-2 so far.