StintIQStintIQ
CommunityLogin

Fair share rules

Endurance races limit how much of the race one driver can take. StintIQ checks your lineup against the rule your race runs under and warns you, before race day, when a driver is short of their share or over a limit. The warnings never stop you saving: the plan is yours.

Each plan has a Fair Share Rule. The rule comes from the sim (iRacing, LMU) or, for ACC, from your server's own settings, not from a series or event. It's shown on the plan page under the race name and track, with an edit link for captains.

The plan page's Fair Share Rule editor with "ACC Server Limits" picked and its three boxes: max stint, max driving time per driver, and drivers per car.

The four choices

Rule What StintIQ checks
iRacing Fair Share Every driver drives at least 25% of an equal share of the race laps (iRacing's Sporting Code). Example: 827 laps over 6 drivers is 138 each, so everyone needs at least 35. Missing it gets the team disqualified after the race.
LMU Fair Share Every driver completes at least half an equal share of the race laps (LMU's Online Fair Share Rule). Example: 50 laps over 2 drivers is 25 each, so everyone needs 12.5. StintIQ rounds up and asks for 13 to be safe, because missing it costs the driver and the whole lineup their DR/SR gain.
ACC Server Limits The limits your server sets, which you type in (see below).
None Nothing is checked. Pick this when your race doesn't enforce a rule, for example an iRacing hosted session or a public ACC server.

"Drivers" means the people with a race stint: a teammate on the roster who isn't racing isn't checked, and neither is a backup or someone who only drives practice or qualifying. The race laps are the plan's projected laps (the Race Summary's total), so the share doesn't move while you're still building the lineup.

Which rule a new plan starts on

A new plan starts on your team's sim: iRacing teams on iRacing Fair Share, LMU teams on LMU Fair Share, ACC teams on ACC Server Limits. Other sims start on None. You can change it on the new-plan form, or later with edit on the plan page. If your team races more than one sim, pick the rule for this race's sim.

ACC Server Limits

ACC has no official fair share rule: the host sets the limits in the server's eventRules.json. Ask your league or host for these numbers and type them in, all in minutes:

  • Max stint — the longest a driver may stay out (driverStintTimeSec, divided by 60). StintIQ warns on any race stint longer than this, working it out from the laps and your lap time.
  • Max driving time per driver — the most one driver may drive in the race (maxTotalDrivingTime).
  • Drivers per car — the car size your server is set for (maxDriversCount). Needed with the driving time.

Leave a box empty and it isn't checked. ACC gives a car with fewer drivers than the server is set for more driving time each, by an amount the server works out and doesn't publish. So StintIQ only checks driving time when your lineup has exactly that many drivers, and tells you when it can't. If incident recovery suggests merging two stints, it also checks the merged stint against your max stint.

"Check this plan's fair share rule"

When StintIQ moved rules from events to sims, some upcoming plans changed: a plan on the retired 24H Series rule now has none, a plan on the old fixed ACC stint range now uses your server's limits (with none entered yet), and a plan whose rule doesn't match the team's sim (say an LMU team on iRacing Fair Share) was left as it was. Those plans show a note under the Fair Share Rule saying why.

  • Captains: click edit in the note, pick the right rule (or keep the one there) and save. The note goes away once a captain saves the rule.
  • Drivers and engineers: ask a captain to check it.

Have questions? Join our Discord →