More Than Just a Visual Refresh
Watkins Glen International already received its “NASCAR Refresh” art update a while back, bringing new trees, 3D foliage, and modernized scenery. With the 2025 Season 4 build, though, iRacing has gone deeper than textures and lighting.
The bigger story this time: track limits, curbing, and rule sets have been rewritten to mirror how the Glen is actually raced in both NASCAR and sports car competition.

The Track Limits Problem
Since the last rescan hit, NASCAR fans in iRacing have been frustrated with one thing above all: track limits.
- Real-world NASCAR drivers often run several feet wider than iRacing allowed, especially in high-speed sections and at corner exits.
- The sim would hand out a 1x off-track the moment you touched pavement that Cup drivers in reality were living on all race long.
- It felt restrictive and unrealistic, with countless community threads asking for a fix.
Now, those limits have been rewritten to align with real-world weekend rules.

What Changed in Season 4
Here’s the breakdown of the new limit and curb logic:
- Classic & Cup layouts
Track limits now match NASCAR weekend rules, allowing the same wide exits and edge-of-the-curb lines you see on TV. No more 1x for driving like the pros. - Boot & Classic Boot layouts
Limits updated to match sports car weekends, bringing IMSA and endurance-style curb use into the sim. - Bus Stop curbing
Reworked to match both NASCAR and IMSA weekend configurations, depending on which layout you select.
Combined, these changes bring Watkins Glen much closer to the dual personality it has in real life: NASCAR drivers taking liberties over the curbs, while sports car teams stick to stricter FIA/IMSA guidelines.
Why It Matters
- For NASCAR fans: You can finally drive Watkins Glen like Chase Elliott, Kyle Larson, or AJ Allmendinger — wide, aggressive, and on the edge without the sim punishing you.
- For sports car racers: The Boot layouts are now locked into the same curb and limit behavior you’d see in IMSA or endurance events, keeping things realistic for multiclass series.
- For everyone: Fewer “immersion breaks” where the sim penalizes something that’s clearly legal on a broadcast.
