Gran Turismo / Forza Rules

The single biggest decision in a sim racing league is how cars are equalised. A one-make series, where everyone drives the same car, is the simplest and produces the closest racing. Balance of Performance settings let a mixed field race fairly but need testing before the season.

If you run a mixed field, lock the BoP settings and publish them. A league where drivers tune power and weight themselves is a league about tuning, which is a legitimate thing to run but should be an explicit choice.

A proper race night runs qualifying then a race of fifteen to thirty minutes, long enough for tyre wear and fuel to matter if you enable them. Mandatory pit stops add strategy and reward drivers who can push and conserve rather than just qualify well.

The in-game penalty system catches obvious cases and misses plenty of others. Most serious leagues supplement it with post-race replay review and a clear published set of racing standards, particularly around contact at corner entry.