Welcome to our second season of GT3 racing in 2023! At CMS we work hard every single day to bring you the best iRacing championships we can, and season 2 is going to be a banger!

Get your private jets fueled up, because we’re bouncing back and forth between North America, Europe, and Japan!

We race every Wednesday night, session opens @8:30pm Eastern. Practice sessions every Tuesday night @8:30pm Eastern

We are also collaborating with the iRacing Team Endurance Series (iRTES) to align our calendar with theirs, so we will be running the same track the week before the iRTES races.

How to Participate

All drivers must click the button above and complete the registration form. If you have registered for any prior season in 2023, you do not need to register again.

When signing up, please choose the class (Pro or Am) that fits you best! If you’re not sure where you fit, please ask. Chapter admins reserve the right to re-balance and re-classify drivers as needed.

Please request membership to the Champion Motorsports league in iRacing, if you are not already a member. Membership on the CMS Discord is also a requirement, as that is where we will send out race briefings and other important news.

There is no cost to race in this series, beyond of course your iRacing membership and any content you do not yet own.

Race Night Schedule

We race every Wednesday night at 8:30pm Eastern. Race sessions are as follows:

  • 8:30pm – Open practice
  • 9:15pm – Drivers meeting
  • 9:20pm – Private qualifying (10 minutes, 2 laps)
  • 9:30pm – Race begins


Race# Date Location Format
n/a Mar 15 Pre-season: Okayama 60-min
1 Mar 22 Sebring (Int’l) 75-min
2 Mar 29 Hungaroring 60-min
3 Apr 5 Circuit de Barcelona-Catalunya (GP) 60-min
4 Apr 12 Virginia International Raceway (Full) 60-min
5 Apr 19 Imola (GP) 60-min
6 Apr 26 Fuji International Speedway (GP) 75-min
7 May 3 Interlagos 60-min
8 May 10 Nurburgring GP 60-min
9 May 17 Le Mans 60-min
10 May 24 Suzuka 75-min

Race Details

Some details may be changed on a per-race basis. Please read the posted race briefing for the race carefully! Briefings are posted on Discord before each race.

  • Dynamic sky and weather, as well as a random track starting state
  • Race session date and time will be included in the briefing
  • Drive-through penalties will be assessed automatically:
    • Every 17x for 60-min races
    • Every 21x for 75-min races
  • One fast repair available for each race.
  • Drivers meeting will be held just before qualifying, using iRacing voice chat. All drivers must have voice chat enabled/unmuted during this period.
  • Voice chat during the race must be kept to a minimum (imminent safety callouts only).
  • Come to the drivers’ lounge (🎧iRacing channel on Discord) after the race to hang out with some of your fellow racers. (Optional, but we don’t bite!)

Series Specifics

  • Each race will be either 60- or 75-minutes.
  • We will be running open setups. Please check out the #setup-sharing channel on Discord, or talk to your fellow drivers in #discussion-weds if you are new to setups or would simply prefer to have a good setup from someone else.


Please consult the points table for details. You must complete 50% of your class race winner’s laps to earn points.

Pro/am Classifications

Pro and Am drivers will race on track together, but will be competing for separate championships. All drivers will receive points in their respective championship based on their overall finishing position.

Car Changes

Drivers are permitted one car change per season, however points earned to date will be forfeit. Drivers that wish to change cars must notify series admins before the session opens on race night. Joining the session before notifying the admins may result in disqualification from that race. Changing cars more than once will not be permitted.

Drivers are locked into their classification (Pro or Am) for the season, unless moved by a series admin.

Rules and Regulations

We follow all league rules as specified in the General Competition Rules at CMS, as well as the iRacing Sporting Code. All members are expected to understand and follow these rules at all times.

Should you be involved in an incident on track, we encourage you to talk to the other driver first. If you wish to escalate it to be reviewed by the stewards, you can fill out an Incident Review Request (IRR). All IRRs must be submitted between 12 and 60 hours after the race.

Everyone must be aware of the Orange Zone (OZ) for each race, as published in the drivers’ briefing. Incidents that occur in the OZ will be reviewed automatically. Stewards will impose higher penalties for any driver found to be at fault for an incident in the OZ.

Series Administrators

Your iRacing Wednesday night administrators are. in no particular order:

  • Ryan Thompson
  • Pierre Robitaille
  • Tim Collier

Please don’t hesitate to contact any one of us via DM if you have any questions or concerns.

Note that, by design, we have no say over penalties or other stewards’ decisions. If you have a question about a steward (IRR) ruling, please contact the chief steward, Jon Uyan.

This series has been created for one purpose only: fierce, friendly competition on the track with like-minded racers, providing a place for everyone to race and have a great time doing so. We are all friends, here.

While we have rules in place, we also don’t intend to add complication or pressure to perform on race night. We all started sim-racing from scratch, and regardless of your experience we want everyone to feel welcome here. So please, come in and make some friends and we’ll see you on the track!