Wheels and Tires
1 Tires may not project beyond the body when the car is at rest on a level track, as viewed from directly above.
2 Reasonable scale appearing inserts are required in all wheels, unless the wheels have scale appearance and detail.
3 Minimum wheel size is nominal 15mm diameter over center-rib, or a scale 16″ (.500″) diameter over visible part of rim with tire mounted (simulating a nominal 15″ wheel), unless actual car raced with smaller wheels. F1 style wheels are not allowed, unless the actual car raced with 13″-14″ nominal diameter rims.
4 Minimum front tire width is 7mm. Front tires may be profiled so that a narrower area contacts the track, but must otherwise be full width.
5 Maximum rear tire width is 12mm.
6 Front tires may be of any rubber/urethane compound. Silicon tires are expressly forbidden. Tires must appear to be black. Clear finish may be applied to tire tread area.
7 No chemical treatment (such as oil soaking) is permitted.
Motors
1 Any commercially available sealed-can slot car motor is allowed. No rewinds or “mod motors” allowed.
2 Magnetic down force from motor may not exceed 30 grams as checked with a Magnet Marshal, exclusive of car weight.
3 Motor can be glued/taped/screwed in place. Pods can be taped or glued to restrict movement.
"If everything seems under control you're just not going fast enough" - Mario Andretti