@DannyP - I used to have Michelin Pilot Super Sports on my DD, which are classified as Maximum Performance Summer tires, and I never had any problem with them down to the 20s, which are rare here. Heck, even the 30s don't happen often, but they do happen. I really don't want to get a set of winter tires, but I don't want my tires failing on me either. Are you sure they cannot be used below 40?