SIM Racing Shoes? We know, the trend is to SIM race barefooted or in socks. We offer shoes for the racers who use SIM racing as a training tool for true, fire-breathing, door to door competition. Alpinestars karting shoes are constructed in a similar manner to your auto racing shoes, except, they are not flame retardant, therefore the pricing is much lower and more appropriate to use when on your SIM rig. Amazingly lightweight with thin, grippy soles keeps you in front of the shoe-less drivers.