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All GTE-Pro Cars Adjusted in Mexico Auto BoP

Weight, power levels adjusted for all cars in auto-BoP change…

Photo: Drew Gibson/Ford

Weight and power adjustments have been made to every car in the GTE-Pro class ahead of September’s Six Hours of Mexico, in the second round of changes to have come from the FIA’s new automated Balance of Performance system.

The Porsche 911 RSR, Ford GT and Aston Martin Vantage GTE have all been given 2kg weight breaks and slight increases in power, in the form of 0.1mm larger air restrictors for the normally aspirated Porsche and Astons and an equivalent increase in boost pressures for the turbocharged Ford.

Ferrari’s 488 GTE, meanwhile, has been given a 5kg weight increase and a decrease in boost across all rpm levels.

The changes have been automatically applied based on data from the last two regular-length WEC races at the Nürburgring and Spa, following the initial auto BoP application for the German round, which took into account the first two rounds of the championship.

While not under the new-for-2017 auto-BoP system, the GTE-Am class has seen a single adjustment made for Mexico, with the Ferrari gaining 15kg in minimum weight.

It brings the turbocharged Prancing Horse up to a minimum weight of 1303kg, some 70kg heavier than the next-heaviest car in the class, which is the Ferrari F458 Italia GT.

The Six Hours of Mexico is set for Sept. 1-3.

John Dagys is the founder and Editor-in-Chief of Sportscar365 as well as the recently launched e-racing365 Web site for electric racing. Dagys spent eight years as a motorsports correspondent for Channel, and contributes to other publications worldwide. Contact John



  1. WBrowning

    July 31, 2017 at 9:29 am

    Looks like the only changes in IMSA GTLM is a slight boost increase for the Ford GT going in to Road America too. Hope all the changes help.

  2. JamieR

    July 31, 2017 at 10:50 am

    Fanboy Triggering in 3…2…1…

    On another not if the 488 is meant to be the “baseline” for performance why does it get adjusted? Surely leave it and set the other cars’ to match?

    • DEJ

      July 31, 2017 at 10:54 am

      Looking forward to see how this all works out.

    • John Dagys

      August 1, 2017 at 7:32 am

      The 488 is getting adjusted because the computer is making the adjustments now.

      • Bert

        August 3, 2017 at 11:06 am

        Historically over the last few years, Ferrari gets hurt the worst by taking away the performance…only the Aston’s and 488’s are the true real GT cars….the new 911’s and the Fords are destroying the GT-PRO class, in GTLM as well by turning GT racing into a spending war…..with LMP1 now gone, the FIA will have to be very careful or the GT class will suffer the same fate because the big auto makers will pull their cars out of racing because of the insane costs…and with the recent emergence of those damned E cars….it’s days may be numbered anyways…

        • WBrowning

          August 31, 2017 at 5:52 pm

          How is that possible when Ford has not made any changes to the basic platform in it’s existence? The 911 made a change, but with the limited changes to each car available, a spending war is highly unlikely.

          If anything, Ford getting involved has brought 100% more interest in the class and road racing in general. Ford taking 4 cars to LeMans and Daytona and 3 in Sebring, only makes sense, if you have 4 cars, why not run them? If Chevy wants to run WEC, or Ferrari wants to add cars, it won’t force other brands to increase spending, because you can’t make mods. to the cars.

          There is a possibility of a couple cars making updates next year, but that couldn’t involve the kind of money you are talking about. If you look at all the tech the Vettes have, they raised the spending bar first. Some of the rest had to build new cars from new platforms, big deal, you want to keep them out? Unless or until they open the homologation rules, the spending will be fairly limited compared to historical racing classes, and when the computerized BoP gets perfected, it will be even better racing..

        • Bakkster

          September 1, 2017 at 9:48 am

          Porsche’s engine position change (similar to the Corvette and Aston change) is exactly what’s needed to keep real GTs that sell by the thousands competitive against a Ferrari or Ford building specialized cars.

          Of all the things to be bothered by, that’s the tiniest. It brought them back up to parity, exactly what even a Porsche-hater like me wants to see.

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