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BMW M8 GTE, Lexus Hit with BoP Adjustments

BMW M8 GTE, Lexus RC F GT3 slowed in latest round of Balance of Performance adjustments…

Photo: Scott LePage/IMSA

The BMW M8 GTE and Lexus RC F GT3 have been hit with Balance of Performance adjustments following Mid-Ohio, with the Mercedes-AMG GT3 given a slight weight break heading into next weekend’s WeatherTech SportsCar Championship round in Detroit.

IMSA confirmed Friday the latest round of BoP changes, which sees the BMW receive a turbo boost decrease, between 3500-7500 RPM, as well as a four-liter reduction in fuel capacity.

It comes following sizable boost increases given to the BMW following the Rolex 24 at Daytona but a re-adjustment after the Mobil 1 Twelve Hours of Sebring that resulted in a slight power decrease.

The changes to the BMW will take effect in the next GT Le Mans round at Watkins Glen, as the class is not in action at Belle Isle.

The Lexus, which dominated Mid-Ohio, meanwhile, will be 25kg heavier in Detroit, while the Mercedes has been given a 10kg weight break following early season struggles.

For the first time this year, no BoP changes have been made to the Prototype class, although IMSA has released additional clarification regarding each car’s permitted aero configurations.

A total of 25 cars are on the entry list for the Chevrolet Sports Car Classic, including the return of Spirit of Daytona’s Cadillac DPi-V.R.

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. griffm3

    May 25, 2018 at 10:55 am

    Geez its not like BMW has won or is going to win any races this year…

    • Slicks in the wet

      May 29, 2018 at 1:38 am

      BMW is a mess. Racing and retail sides. It’s so sad.

  2. Old Trombone

    May 25, 2018 at 11:24 am

    Lexus to get 25kg extra. Hmmm, is it time for Gentilozzi to: “… let the warmth of victory that feeds a racer’s soul sustain me for longer than it should, dipping into its bounty when things inevitably get tough.”? He wrote that himself for your site!

    Dagys: watch Adam Curtis’ long-form documentary on Bernays, Freud’s nephew who established the PR industry in New York in the 1920’s. It’s called “The Century of the Self”. I know for a fact that Gentilozzi needs to see that show.

    • Sam Toure

      May 25, 2018 at 12:29 pm

      Bmw should pull out of stupid politics.

      • Steve

        May 25, 2018 at 12:53 pm

        Agreed. They have two choices. Play politics with a stupid bloated M8,or get serious and race an M3 or M2. It is not like the M8 has the heritage of say a Porsche 911 BMW needs to keep alive .

        • el_gordo

          May 25, 2018 at 3:29 pm

          GT stands for Grand Tourer: A grand tourer (Italian: gran turismo) (GT) is a performance and luxury automobile capable of high speed and long-distance driving. The most common format is a front-engine, rear-wheel-drive two-door coupé with either a two-seat or a 2+2 arrangement.

          • Andy Flinn

            May 26, 2018 at 9:17 am

            El_gordo, BMW and PTG raced 2-door – and 4-door – BMW M3 “GTs” successfully in PSCR in the mid-90s.

        • Exactly what El_gordo said

          May 25, 2018 at 5:34 pm

          The M3 or M2 are NOT GT cars, plus it would be an M4 they would anyway, the M3 became 4 door after their numbering realignment with this generation

          • Steve

            May 25, 2018 at 8:30 pm

            So if I follow your obviously flawed logic, none of these cars should be racing at all.
            GT=grand touring not racing
            LM=Lemans not Mid Ohio

            Nice try

          • Andy Flinn

            May 26, 2018 at 9:23 am

            Imagine how boring GT racing would be without BMW and the other grand touring cars that obviously don’t belong in our snobby GTLM class.

            Just a bunch of Porsche 911 derivatives.

            If that’s what you like, just watch a Porsche Cup race.

          • Research is your friend

            May 27, 2018 at 11:02 am

            Wow Steve, logic is def NOT your strong suit. First GT is the base of the car racing not the description of the activities on the track so wrong there. Second LM would refer to the rulebook describing the GT class if cars. Unless you think every track should make its own rule set? Seems rather impractical didn’t it? Or maybe that’s too hard for a child like brain to understand.

            As for the older BMWs, the original V8 M3s were the worst kind of cheating cars ever, even Ford has actually sold a few of their car. The later cars were GT2S and NOT eligible for racing elsewhere. People should really actually know about the cars and THEN comment. Would make it easier to have a discussion.

  3. GTLM is anything IMSA wants it to be and doesn’t stand for anything meaningful

    May 27, 2018 at 2:56 pm

    I guess SARCASM is unknown to research is your friend.

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