Hey a quick question. when the tire tread is worn in the middle what is the cause of that, and best why to fix it. i am going to rotate the tires cuz the back one have way more tread. also the middle is worn more but the sides are to. i am taking it in for a alignment and wheel balanceing.monday will this help?

 

If your tires are wearing in the middle it usually means your pressure is too high. Low tire pressure will wear the sides, and if your camber is off it will wear the sides as well. Toe and caster will also affect wear characteristics, but I'm not sure off the top of my head Do a search and I'm sure you'll find what you're looking for.
-hype

 

Has to be too high pressure. The middle will bow out thus causing wear down the middle. ALways check your inflation. Will save you gas and increase your stopping power.