Rules/Tire Rules



Mars Late Model Tour approved DIRTcar UMP racing tires are: Hoosier LM20, LM30, & LM40.

The LM20 may be used on any corner of the car – right front, left front, left rear, right rear. A LM30 or LM40 may be used as a right rear option only.

DIRTcar UMP Rules, governing mechanical rules and chemical alteration of tires are in effect.

Tire inspection can be performed by Mars Late Model Tour Officials and/or DIRTcar UMP Officials at any time throughout the event day including but not limited to; on the grid, in the designated inspection area, post-race inspection or in an individual team’s pit stall.

Standard Race Day Format:

  • Qualifying (2 laps)

    • A & B Group Qualifying – (if 28 cars+) 
    • Straight Up Qualifying – (if under 28 cars)
    • (Overall Fast Qualifier to front stretch before opening ceremonies for interview and pictures)
  • Heat Races (10 laps) – Car count determines number of heats

    • 3 Heat Races (10 laps) Top 5 transfer to A-Main (Top 5 to scale) (Under 28 cars)
    • 4 Heat Races (10 laps) Top 4 transfer to A-Main (Top 4 to scale) (28-49 cars)
    • 6 Heat Races (10 laps) Top 3 transfer to A-Main (Top 3 to scale) (50+ cars)
  • Redraw for A-Main

    • Heat Race Runner-Ups Draw (4-6 or 5-8)
    • Heat Race Winners Draw (1-3 or 1-4)
    • (If more than 4 heats ONLY winners redraw)
  • B-Mains (12 laps) – Car count determines number of races

    • 1 B-Main (12 laps) Top 5 transfer to A-Main (Top 5 to scales) (Under 28 cars)
    • 2 B-Main (12 laps) Top 2 transfer to A-Main (Top 2 to scales) (Over 30 cars)
  • 2 Provisional Starters each event

    • 1 – Mars Series provisional – (based of highest Mars points driver not transferred into A-Main) (1st race of year based off previous season points)
    • 1 – Track provisional – (track discretion)
  • Feature Event – Laps & Purse varies per event

    • Top 3 finishers always to front stretch for interviews and pictures
    • (Top 5 to scales)