Rules

Rules for 2026 events are posted below

Future 2027 Tire Rules

In 2027 the home-built 7mm tire rules will be changing to limit the number of studs to 20 studs/lineal foot of tread. Up to and including 2026 the number of studs is unlimited. This announcement is a courtesy to anyone building new tires and want to ensure they are legal for 2027 and beyond.

See new 2027 version of rules here: Future 2027 Tire Rules

Each driver needs to purchase an IIRA drivers license and have wrist band to show proof as they enter onto the track each time.  License is one time, good for the whole season.  Each car needs to purchase daily registration for each event, but multiple people can drive that same car each day as long as they have an IIRA license.

Passengers are allowed in most events. However, IIRA reserves the right to restrict passengers for certain drivers or sessions for any reason. There is a maximum of 1 passenger per vehicle and everyone in the vehicle must be wearing an approved helmet.