The quickest GT3 car at Road Atlanta in iRacing 2026 Season 4 Week 2 is the BMW M4 GT3 EVO, on a 1:17.143. The Audi R8 LMS EVO II GT3 is next, 0.067s back.
Below is every one of the 11 cars in the class, ranked on the fastest lap our coaches set this week, with the optimal lap alongside it. All 11 ran the same conditions, so the differences are the cars, not the weather.
GT3 lap times at Road Atlanta — Week 2
| # | Car | Fastest lap | Gap | |
|---|---|---|---|---|
| ✓ | 1 | BMW M4 GT3 EVO | 1:17.143 1:17.119 opt | — |
| 2 | Audi R8 LMS EVO II GT3 | 1:17.210 1:17.196 opt | +0.067 | |
| 3 | Acura NSX GT3 EVO 22 | 1:17.278 1:17.238 opt | +0.135 | |
| 4 | Ferrari 296 GT3 | 1:17.295 1:17.255 opt | +0.152 | |
| 5 | Chevrolet Corvette Z06 GT3.R | 1:17.335 1:17.250 opt | +0.192 | |
| 6 | McLaren 720S GT3 EVO | 1:17.349 1:17.238 opt | +0.206 | |
| 7 | Lamborghini Huracan GT3 EVO | 1:17.367 1:17.292 opt | +0.224 | |
| 8 | Mercedes-AMG GT3 2020 | 1:17.433 1:17.405 opt | +0.290 | |
| 9 | Aston Martin Vantage GT3 EVO | 1:17.435 1:17.324 opt | +0.292 | |
| 10 | Ford Mustang GT3 | 1:17.517 1:17.459 opt | +0.374 | |
| 11 | Porsche 911 GT3 R (992) | 1:17.535 1:17.496 opt | +0.392 |
✓ marks a car within 0.05s of the fastest — close enough that the driver matters more than the machinery. opt is the optimal lap: that driver’s best sectors added together.
What the times tell you
Worth noting: the McLaren 720S GT3 EVO is 6th on outright pace but 4th on optimal lap. Its best sectors are quicker than its best lap suggests — there is time in it for a driver who can put a clean lap together.
Get the setup for the quickest car
The BMW M4 GT3 EVO is the car to be in at Road Atlanta this week.
Included with your Silver or Gold subscription.
ARA Silver includes weekly data packs for 30+ cars, delivered automatically by the ARA Sync app.
Conditions these times were set in
Lap times mean nothing without the conditions attached, so here are ours. Every car in this class ran the same session settings.
| Session start | 26 September 2026, 1:55pm |
| Air temperature | 76°F |
| Humidity | 58% |
| Cloud cover | Partly cloudy |
| Wind | 6 mph E |
| Track usage | 50% |
How we work these out
These are not simulated or estimated figures. Every lap time here was set by an Apex Racing Academy coach on the Apex setup for that car, in the same session conditions, and published as a VRS data pack. The fastest lap is the quickest complete lap driven. The optimal lap is that driver’s best sectors added together — what the car had in it on the day.
We publish this every week of the iRacing GT Sprint season, for every car in the class.
