I used a 14 inch kids bike tire, but you need to use what works for your power wheels tires.
1. Cut the bike tire so it will lay more flat.
2. after placing the bike tire on the powerweels flatten it out the best you can
3. I used 1 3/8' sheet rock screws
4. Drill into low points on the tires, so the screws don't wear out on the road.
5. After each screw, move about 6 to 8 inches and pull the tire tight
6. At the end over lap slightly so the forward motion tire lays on top of the.
7. Put kids in and let them play.