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BoP calculator

Work out the legal minimum weight or maximum wheel horsepower for your car under the BTCC Balance of Performance rules.

Bahrain Touring Car Challenge

Season calendar 2026/27

Day raceNight race
  • Shakedown 16 Oct Upcoming
  • Round 1 30 Oct Upcoming
  • Round 2 13 Nov Upcoming
  • Round 3 28 Nov Upcoming
  • Round 4 15 Jan Upcoming
  • Round 5 29 Jan Upcoming
  • Round 6 02 Apr Upcoming
  • Round 7 16 Apr Upcoming
Choose to calculate weight from horsepower, or horsepower from weight.
Maximum allowed is 4001 cc.

How it works

The calculator applies the BTCC Balance of Performance factor for engine capacity and forced induction to a power-to-weight base of 0.2055 WHP/kg.

Read the regulations