Jim, no wheel spacers are street legal, according to the mfg. They are guaranteed for off-road only. This includes hub-centric, wheel-centric, and lug-centric and any combination thereof. Including SpiderTrax. Read the fine print. So if you are using spacers, as I am, make sure they are the best you can get, all-centric as above. Only a fool would settle for less to save a few $$. :nuts: