[camarojoe]

To be honest, i' not sure. I didn't realize the tires would stain the white tile til it was too late... I <u>do</u> know i scrubbed the living heck out of it with everything from a magic eraser to steel wool and i got the stains "better" but not 100% gone. I don't think they could go the entire way though the tile since they're more than 1/8" thick... they just stain deep enough that it doesn't just "wipe off". I think you'd be fine with a tile under each tire to protect marks on your epoxied floor. You MAY find you don't need anything under them, but it couldn't hurt. By the way, the tile I used is Armstrong Excellon, sold at any Home Depot or Lowe's. Easy to put down, easy to take care of for the most part. Just be sure your concrete is smooth, as it will crack if the entire surface of the tile isn't able to sit flat on the floor underneath.