iRacing competition has been a staple at CMS for a number of years with its Wednesday evening events. To facilitate racing with CMS members not located in the Americas we are excited to announce our first two-driver (and reserve driver), team-based endurance series that is time friendly to the Americas and Europe. Join us for some great competition and camaraderie!

2021 CMS Team Endurance Series


Our format for this 2-driver team endurance series will be loosely based on the World Endurance Championship (WEC) structure. The series will offer podium trophies and multiple prize opportunities for competitors.

  • Starting in January 2021, the five-race series will offer one event per month.
  • The series will be a multi-class competition with LMP2 and GTE classes.
  • There will be a separate scoring championship for each class.
  • Each event is 150 minutes in length at iconic racing venues.
  • The series will be time-friendly to the Americas and Europe.
  • The goal is to offer a series that allows everyone to participate!

Teams & Team Registration

  • All competing teams must be members of the new CMS Team Endurance Series league.
  • All information in the registration section must be completed to be eligible.
  • Once the registration is received, race admins will invite teams to the league via an invite in iRacing.
  • Only after the invite has been accepted will teams have access to the league and the server.
  • Submit your team’s information on this form to join the new league.
  • Teams will use the iRacing Team criteria.
  • The registered teams are the only drivers eligible to drive.
  • Driver swaps will use the iRacing “fair share” criteria for team driving.
  • A team must maintain its drivers for the duration of the 5-event series.

A. Drivers cannot be switched out during the series within a team.

B. If a driver becomes ineligible or drops-out for any reason during the series, the reserve driver can become active and drive the event.

C. The team member replacement function is a one-time opportunity.

D. “New” team registrations will not recover existing series points from an “old” team.


The series will use the following iRacing cars.

Prototype Class

GT Class

A reminder that in iRacing, only the car you drive is required to be purchased, not all the cars running in the series!

Teams must drive the same car throughout the entire season.

If a team chooses to change to a different car during the season, the team will need to re-register as a “new” entry, and all points scored in the preceding series events are forfeited.

Event Schedule

  • 1:00 PM Eastern / 7:00 PM Central Europe – Practice (45 minutes).
  • 1:45 PM Eastern – Private Qualifying (15 minutes).
  • 2:00 PM Eastern – Gridding (approximately 5 minutes).
  • 2:05 PM Eastern / 8:05 PM Central Europe – Race (2.5 hours).

Sunday, January 17, 2021
Race 1 – Daytona Road Course
Track time: Afternoon to Night

Sunday, February 28, 2021
Race 2 – Sebring
Track time: Morning

Sunday, March 28, 2021
Race 3 – Le Mans
Track time: Afternoon to Night

Sunday, April 18, 2021
Race 4 – Monza
Track Time: Afternoon

Sunday, May 16, 2021
Race 5 – Road Atlanta
Track Time: Morning

Test Races

A week before each event there will be a brief 30-minute test race.

Participation is optional, but for those that can attend it will be a good opportunity to test your setup, strategy, and tactics.

  • 1:00 PM Eastern / 7:00 PM Central Europe – Practice (45 minutes).
  • 1:45 PM Eastern – Private Qualifying (15 minutes).
  • 2:00 PM Eastern – Gridding (approximately 5 minutes).
  • 2:05 PM Eastern / 8:05 PM Central Europe – Race (30-minutes).

Sunday, January 10, 2021
Race 1 – Daytona Road Course

Sunday, February 21, 2021
Race 2 – Sebring

Sunday, March 21, 2021
Race 3 – Le Mans

Sunday, April 11, 2021
Race 4 – Monza

Sunday, May 16, 2021
Race 5 – Road Atlanta


  • Drivers have 15 minutes to complete up to 3 timed laps during the qualifying session, the quickest of which will be used to determine the qualifying position for the race.
  • The driver that sets the qualifying time must also start the race.

Warmup Lap / Race Start

  • Rolling start.
  • No tire warming.
  • Classes are grouped together.
  • The race starts on the iRacing green.

General Information & Settings

  • The series will run open setups, but we encourage everyone to share!
  • Fuel capacity in each class is 100%.
  • The weather will be Dynamic Weather and Dynamic Track.
  • Track state: Rubber will progress between sessions. Marbles will be cleaned after each session.
  • One Fast Repair.
  • No drop races. All 5 events count towards the championship.
  • Points will be awarded after each event to entrants based on their finish within their own class.
  • Only use an Ethernet cable connection. Do not use a WiFi connection. If your team’s connection is unstable in iRacing, you will be first asked to park your car in the pits to see if it stabilizes. If the problem continues, you will be asked to disconnect from the race, reboot your computer and try to reconnect. If your team still has a bad connection, as a very last resort the team will be removed from the event.

Custom Livery

  • Custom skins using the base series template is required for all teams in both classes.
  • If a team does not provide a custom skin it will be provided by race organizers.
  • Submitted skins must comply with iRacing’s Custom Paint Policy.
  • Teams are welcome to make one change to their custom livery during the 5 event series.
  • A week prior to the first race at Daytona a car skin pack will be available for teams to download and install.
  • Important note. If you plan to use the provided custom skin pack, don’t have Trading Paints turned on. It could overwrite the custom skin set.

Download the template for your team livery.

Custom Livery Submission

Submit your team’s car livery here.


1) Information will be dispersed primarily on the CMS Discord server in the CMS Team Endurance Series category.

2) While on the server, voice comms will be exclusive to the iRacing radio function. No race comms during the event will be transmitted on Discord.

3) Immediately following the race, the podiums for LMP2 and GT should join the Discord channel #winner-interviews located on the CMS Discord server in the CMS Team Endurance Series category for their winner’s interviews by the broadcasting team.

4) Set your microphone to “push to talk”. If that just doesn’t work for you, PLEASE set the voice-activated audio level up considerably so your coughing, wheezing or sim controller grinding isn’t “shared” with everyone else.

5) Abusive and/or profane in-game chat may lead to that team receiving probation, suspension, or ban from the league.

6) Do not “call out” or argue with a competitor or race control. If you persist after being warned, the team microphones will be disabled in iRacing during the event.

7) Teams are encouraged to use their team radio within iRacing.

8) A penalty applied by iRacing AI in avoiding a crash is eligible for review by race control.

To have race control review for an errant penalty, the driver of the team car should call out to race control:

  • Their car number.
  • Reason for the penalty.
  • A one-sentence description of what happened.

Race control will respond with “car number 123, reviewing”.

After review, the driver will see on their screen that the penalty has been removed.

Incident Count

  • Teams will receive a drive-thru penalty after 25 incident points.
  • Teams will be disqualified after 50 incident points.


1) Penalties will be applied by the in-race iRacing AI function.

2) A race controller will be present during each event, but will not intervene during an event except:

  • to clear an errant penalty (specifically defined below).
  • to remove a team from competition in the case of connection lag, reckless and/or retaliatory driving.
  • a violation of race comms rules.

3) All penalties must be served and cleared by the iRacing AI. Remember race control does not see penalties from iRacing AI, so if a driver asks, “why did I get a penalty?” race control will not be able to advise, only that a penalty was issued.

4) Make sure you read iRacing’s FIRST Sporting Code section on how penalties are applied and how to clear penalties.

5) CMS Gentlemen’s Rule – Should you turn-around or damage another driver by your error, consider pulling off track in a safe location and waiting for the other driver to proceed in the race.” This is an elective decision, but penalties will be significantly reduced if adhered to.

Post Race Incident Race Report (IRR)

  • Each team may submit up to 3 IRRs per event.
  • If more than 3 are submitted, the first 3 will be accepted and the others declined.
  • Teams have 24 hours to complete and submit the IRRs from the time the official race replay is posted.
  • Only the official replay may be used for IRR submission.
  • The official race replay will be posted immediately after each event.
  • Download the file from the CMS Team Endurance Series Discord category.
  • Penalties will be applied by race control at the next race the team enters.
  • Download the CMS Team Endurance Series IRR form here.
  • The decision of the post-race CMS Team Endurance Series reviewers is final.


There will be two championships for teams. One each in LMP2 and GT classes. Points will be scored in each class separately. At the end of the 5-race series, CMS will crown both LMP2 and GTE podiums!


Each class will use the following for team championship points.

Series Broadcasts

The series will be broadcast live on the CMS Racing YouTube Channel so family and friends can spur on their favorite teams.

1st place – 35 points
2nd place – 32 points
3rd place – 30 points
4th place – 28 points
5th place – 26 points
6th place – 25 points
7th place – 24 points
8th place – 23 points
9th place – 22 points
10th place – 21 points
11th place – 20 points
12th place – 19 points
13th place – 18 points
14th place – 17 points
15th place – 16 points
16th place – 15 points
17th place – 14 points
18th place – 13 points
19th place – 12 points
20th place – 11 points