The quickest GTD car at Red Bull Ring in iRacing 2026 Season 4 Week 4 is the Lamborghini Huracan GT3 EVO, on a 1:28.303. The Ferrari 296 GT3 is next, 0.078s back.
Below is every one of the 10 cars in the class, ranked on the fastest lap our coaches set this week, with the optimal lap alongside it. All 10 ran the same conditions, so the differences are the cars, not the weather.
GTD lap times at Red Bull Ring — Week 4
| # | Car | Fastest lap | Gap | |
|---|---|---|---|---|
| ✓ | 1 | Lamborghini Huracan GT3 EVO | 1:28.303 1:28.267 opt | — |
| 2 | Ferrari 296 GT3 | 1:28.381 1:28.338 opt | +0.078 | |
| 3 | BMW M4 GT3 EVO | 1:28.390 1:28.364 opt | +0.087 | |
| 4 | Porsche 911 GT3 R (992) | 1:28.423 1:28.402 opt | +0.120 | |
| 5 | Chevrolet Corvette Z06 GT3.R | 1:28.427 1:28.415 opt | +0.124 | |
| 6 | McLaren 720S GT3 EVO | 1:28.454 1:28.442 opt | +0.151 | |
| 7 | Acura NSX GT3 EVO 22 | 1:28.461 1:28.403 opt | +0.158 | |
| 8 | Mercedes-AMG GT3 2020 | 1:28.628 1:28.584 opt | +0.325 | |
| 9 | Aston Martin Vantage GT3 EVO | 1:28.697 1:28.613 opt | +0.394 | |
| 10 | Ford Mustang GT3 | 1:28.813 1:28.813 opt | +0.510 |
✓ 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 Acura NSX GT3 EVO 22 is 7th on outright pace but 5th 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 Lamborghini Huracan GT3 EVO is the car to be in at Red Bull Ring this week.
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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 | 10 October 2026, 9:25am |
| Air temperature | 72°F |
| Humidity | 64% |
| Cloud cover | Mostly 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 IMSA season, for every car in the class.
