is anyone out there changing thier own tires?,was pricing tires mounted and balance at shops,prices go from $30 to $700,thats for dunlop roadsmarts,others about same,$211.00 at one place to r7r wheels off bike, $30 a wheel if you bring them in,and most dont install tires that you buy online, my riding buddy and I are thinking of buy a changer and balancer,any thoughts from all you wise old and young ST guys,always got great input before.