Hey, what's the policy on stuff like snow tires when trading a car in to the dealership. I know I would take out my head unit and put the original one back in, they wont give you anything more for it, but what about wear and tear items, like I have a set of Blizzaks that are about 6 years old, they are still in good shape because I take them off in the summer and don't drive that much when it's not snowing out (I am a mad cyclist). I'd like to keep the regular tires because they are probably worth more than the Blizzaks, but I'm wondering how would the value be upon trade in, would a dealership see them and say, AHA, snow tires, lets deduct $XXX? Right now, they are mounted on the original rims I got with the car but I would have them switched upon trade in.... Jay P.S. How did you like that completely run-on sentance my first paragraph is?