My Cruze has worn both its snow and all-season tires to near the end of their life. I only want to purchase one set of tires for it this year. It has a set of 3 year old all-seasons at 3/32" and a set of 5 year old snow tires varying between 7/32" at the edges and 5-6/32" in the centers. The all-seasons would likely get replaced whenever replacements go on sale, while the snows could be run until December 2016 or so. I'm leaning toward burning off the snow tires since they're marginal for another season, and are the older set. Agree or disagree?