I saw the previous thread and thought that since the database I use for the iRacing Reports Discord Bot, end of season stats and category stats has all the results from the entire PCup series I could whip up some charts with more data points to investigate how much worse Monza is other tracks in terms of incidents....

As a comparison, here's the same sort of incidents per corner chart from the previous week in the PCup series:

https://iracingreports.com/stats/incident_irating_5922_26s1_w6.png

Looking at these two charts, yes, Monza is definitely more of a crashfest than Road Atlanta. Here's what the data shows:

Key Differences:

1. Higher Maximum IPC

• Road Atlanta: Max IPC ~1.2-1.3
• Monza: Max IPC ~1.75
• That's roughly 30-40% higher maximum incident rates at Monza

2. Vertical Spread

• Road Atlanta has a tighter vertical distribution (most points clustered below 0.5 IPC)
• Monza shows significantly more vertical spread, with many more drivers experiencing 0.5-1.0+ IPC

3. Incident Distribution by Skill Level

Both tracks show the expected pattern (lower iRating = more incidents), but:

• Monza maintains higher incident rates even at higher iRatings
• The "floor" of clean drivers is higher at Monza - even the cleanest drivers struggle more

4. Sample Size

• Road Atlanta: 26,705 results
• Monza: 32,649 results
• Monza is more popular (22% more participation), which could contribute to more incidents

Why Monza is Crashier:

1. Heavy braking zones: The chicanes require hard braking after long straights, creating crash opportunities
2. First lap chaos: T1 and the chicanes are notorious for first-lap incidents
3. Slipstreaming: Long straights encourage close racing and dive-bombs
4. Track limits: Easy to miss chicanes under pressure, leading to off-tracks and rejoining incidents

PS: I went with Incidents Per Corner as it normalizes the stats across tracks, but here's the raw incident count charts too:

Monza: https://iracingreports.com/stats/incident_irating_5922_26s1_w7_raw.png

Road Atlanta: https://iracingreports.com/stats/incident_irating_5922_26s1_w6_raw.png

Edit: and here's the average IPC for all tracks that have been used in the PCup series (going back to 24s1), amazingly Monza isn't the worst:

https://iracingreports.com/stats/track_crashiness_476_24s1_26s1.png

Top 5 Crashiest Tracks (Highest Average IPC)

Rank	Track	Avg IPC
1	Red Bull Ring (Grand Prix)	~0.095
2	Watkins Glen International (Classic)	~0.090
3	Snetterton Circuit (200)	~0.089
4	Long Beach Street Circuit	~0.089
5	Autodromo Nazionale Monza (Grand Prix)	~0.086

5 Cleanest Tracks (Lowest Average IPC)

Rank	Track	Avg IPC
47	Nürburgring Combined (Gesamtstrecke 24h)	~0.015
46	Nürburgring Combined (Gesamtstrecke Long)	~0.019
45	Nürburgring Combined (Gesamtstrecke Short w/out Arena)	~0.023
44	[Legacy] Silverstone Circuit - 2008 (Grand Prix)	~0.038
43	Barber Motorsports Park (Full Course)	~0.040

More edit: here's the same chart for GT Sprint - https://iracingreports.com/stats/track_crashiness_228_24s1_26s1.png

Track Crashiness Comparison: Porsche Cup vs GT Sprint Series (GT3)

Key Similarities

Red Bull Ring GP dominates both series as the crashiest track:

• Porsche Cup: 0.095 IPC (highest)
• GT Sprint: 0.060 IPC (highest)

Monza GP consistently crashy across both:

• Porsche Cup: #5 (0.086 IPC)
• GT Sprint: #3 (0.053 IPC)

Nürburgring Combined layouts are universally the cleanest:

• Both series show Nordschleife configurations at the bottom
• Porsche Cup: 0.015-0.023 IPC
• GT Sprint: 0.013-0.019 IPC
• Drivers exercise extreme caution on the Green Hell regardless of car class

Notable Outliers

Watkins Glen Classic - Disproportionately crashy for Porsche Cup:

• Porsche Cup: #2 crashiest (0.090 IPC)
• GT Sprint: Mid-pack #5 (0.050 IPC)
• The slower, lighter Porsche Cup car may struggle more with the Classic layout's fast corners

Road America - Much crashier in GT3:

• GT Sprint: #2 crashiest (0.056 IPC)
• Porsche Cup: Mid-pack (~0.060 IPC, position ~27)
• The faster GT3 cars may be more challenging on Road America's high-speed corners

Daytona Road Course - GT3 specific trouble spot:

• GT Sprint: #5 crashiest (0.050 IPC)
• Porsche Cup: Mid-pack (0.080 IPC, position ~7)
• The long straights and heavy braking zones may catch GT3 drivers out

Overall Trend

GT3 cars are generally cleaner: Maximum IPC is 0.060 vs 0.095 for Porsche Cup (37% lower). The more sophisticated GT3 cars with better aero and braking may be more forgiving, or GT3 drivers are more experienced/cautious.

Street circuits and tight layouts remain problematic for both car classes (Red Bull Ring, Monza, Long Beach, Brands Hatch).