Originally Posted by Nicname
And how would you say they perform during the spring and summer?
It all depends on what you are comparing them to. Compared to the stock Conti's that come on the M3, there wasn't a huge difference. I have the stock Pirelli's on my new M3 and now I feel much more of a difference. You can definitely run these all year but I'm not sure why you would want to if you can swing two separate sets (1 for summer & 1 for winter). Hope that helps.