I ran them for years ... my car has had between 520- 550 hp motors in it a few years ago I switched to drag radials and I now no longer screw the tires to the rims , I checked and the tires aren't moving on the rims plus I didn't want to drill holes in my new rims . I agree though with slicks and tubes they should be screwed to the rims or run a beadlock style wheel .