• Daytona 24 Hourly Update

    IMSA 2026 Round 3 Daytona 24 Hour 23Leader #7 Porsche Penske Motorsport, 669 lapsSimple prediction of total distance 698 laps Lap Chart Hourly Update The hour-by-hour chart shows heavy position churn early and overnight, before the extended fog period reset the field and…

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    Daytona 24 Hourly Update
  • WEC Imola BoP

    Second race of the new 3 race average approach. Here is an attempt to understand how that might work. Let’s remind ourselves of the performance order from the last three races and the race that falls off the list Combined Peak and Stint… Read more…

    WEC Imola BoP
  • Long Beach Qualifying Notes

    Quick takeaways Porsche, whether GTP (Penske) or GTD (Rexy) scrubbing in tires in qualifying. GTD wouldn’t have been able to do that last year. Does that mean they will definitely change tires in the race? Wickens was a little off his pace in… Read more…

  • Long Beach Practice Sessions

    Update after the second and last practice session. GTP Laps completed Aston Martin continues the trend of fewer practice laps compared to others. #85 Porsche that leads the way. BMW continue their trend of putting in the miles, but relative to others this… Read more…

    Long Beach Practice Sessions
  • Long Beach Practice 1

    A short race this weekend, on a double bill with Indycar. Laps completed – GTP (after practice 1) Aston Martin continues the trend of fewer practice laps compared to others. BMW continue their trend of putting in the miles, but it is #85… Read more…

    Long Beach Practice 1
  • Long Beach BoP

    A fun little sprint race coming up, here are the BoP changes.1 Power to Weight BMW and Aston Martin gain relative to the others who lose power. BMW has been strong, but not got the results recently, so this could be good for… Read more…

    Long Beach BoP
  • Driver Comparisons – GTP Sebring

    A look at how the intra-team drive line ups compare. Porsche Let’s look at Penske first, because Penske was first. And second. Penske’s approach was to give one driver (#7 Nasr, #6 Jaminet) in each car the bulk of the time. This driver… Read more…

    Driver Comparisons – GTP Sebring
  • The battle for Sebring

    It was a close fight throughout, but in the end Penske Porsche had the legs to take their 19th Sebring win. 1 Battle shows the 1st, 2nd, 4th cars at the flag. The Cadillac lost out because it couldn’t keep the stint length… Read more…

    The battle for Sebring
  • Sebring Sells Sanctuary

    IMSA 2025 Round 6 SebringWinner #7 Porsche Penske Motorsport, 353 laps Race lap comparison is v. 2022 Cadillac DPi-V.R 351 laps which is the highest in the DP/GTP eras.Absolute record distance was 2009 Audi R15 TDI 383 laps. Lap Chart: It’s wide, but… Read more…

    Sebring Sells Sanctuary
  • Understanding the New Balance of Performance Approach

    Thierry Bouvet and FIA technical engineering director Thomas Chevaucher outlined the BoP process for FIA WEC 2025 1. It is based on recent race lap times. Here is a look at those recent races and how they influenced BoP for the Opener in… Read more…

    Understanding the New Balance of Performance Approach
  • Sebring Lappery (after practice) UPDATED

    Laps after two practice sessions. Aston Martin low on laps again. Read more…

    Sebring Lappery (after practice) UPDATED
  • Sebring Race BoP

    After some big swings for testing (Daytona and Sebring tests) it has settled down, but we are left with a bigger spread than we normally have. 1 Power:Weight The spread is noticeable in Power:Weight. Lamborghini has gained here, mainly by the others losing… Read more…

    Sebring Race BoP
  • 2025 Le Mans Entry List

    ACO Announces the entries. Still some drivers to be confirmed1. Read more…

    2025 Le Mans Entry List
  • Qatar First Look at Relative Speeds

    Highlighting the Top 10 laps and 60% fastest of each car. First the usual table. It is ranked by Top 100. Now let’s look at “peak performance”. the Top 10 spreads by manufacturer: Now the Race Pace, roughly 60% of the distance (not… Read more…

    Qatar First Look at Relative Speeds
  • 2025 FIA WEC Round 1: Hourly Update

    Ferrari 1-2-3! FIA WEC 2025 Round 1 LosailWinner #50 Ferrari AF Corse, 318 laps Read more…

    2025 FIA WEC Round 1: Hourly Update
  • Qatar Track Preparation is done

    Just the race, how meaningless was all this? Anyway, here are the usual charts. Best ten laps, best 100 and best 250 from all of the build up. Ferrari with the lap time and top speed advantage. And the order of all the… Read more…

    Qatar Track Preparation is done