I agree and live in the SoCal mountains. Mornings are often frosty at my altitude. I have the A/S3s on the stock BRZ wheels and Pilot Super Sports on aftermarket rims. The PSS tires turn to rock in the thirties and the A/S3's have gone down into the low teens without a problem. The grip differential is slight, so… » 1/18/15 5:41pm 1/18/15 5:41pm