I do not own a spyder yet, but was thinking about this question. About how long do the tires on a Spyder last? Since the wheels are not really automotive type (they look like they have a deep hub area) how difficult is it to mount / dismount tires and re-balance tires? Could I take the front wheels to a tire store to get tire? On the rear, would I have to remove the pulley or brake rotor to have the tire replaced? Thanks.