Originally Posted by Tee-Dub
I'd take them off until the weather drops below 50 degrees as a high or your tires wont last long. The studless snows really don't do well in warmer temps since they are so soft.
Performance winter tyres with an "H" speed rating and above don't have this problem (Dunlop 3D, Michelin Pilot Alpin, Pirelli Sottozero, Bridgestone LM, etc). This is really an issue with, for example, Bridgestone WS and Michelin X-Ice winter tyres.