Connect with us


Lexus, Mercedes-AMG Hit With Weight Increases for Lime Rock

Lexus, Mercedes-AMG GT3 entries hit with weight increases for Lime Rock…

Photo: Rick Dole/IMSA

The Lexus RC F GT3 and Mercedes-AMG GT3 have been hit with weight increases ahead of next weekend’s Northeast Grand Prix at Lime Rock Park.

IMSA released Thursday the latest round of Balance of Performance adjustments, confirming a 15kg increase in minimum weight for the pair of 3GT Racing Lexus cars, as well as 10kg of additional weight for the Mercedes.

It comes following the first GT Daytona class victory of the season for Riley Team AMG last weekend at Canadian Tire Motorsport Park, in a race that saw the 3GT Lexus entries dominate prior to off-course excursions.

Mario Farnbacher has replaced David Heinemeier Hansson at the wheel of the No. 15 Lexus for Lime Rock, with the Silver-rated Dane electing to skip the race but expected to be back behind the wheel for Road America.

In addition, the Ferrari 488 GT3 has been given a two-liter increase in fuel capacity, although no performance-related adjustments. 

The only other BoP change for Lime Rock comes with the GT Le Mans class BMW M8 GTE, which has been given a slight increase in turbo boost levels and a one-liter fuel increase.

It comes after a power reduction to the BMW Team RLL-run entries in the lead up to CTMP.

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. jason

    July 12, 2018 at 2:07 pm

    Oh gheesh. Mercedes and Lexus went 1-2 at CTMP. Ok here is performance penalty weight. I don’t mind BoP to help IMPROVE cars somewhat. Porsche in GTD could some. But straight up ballast to slow somebody down is dumb.

    • N8

      July 12, 2018 at 4:15 pm

      They should just go to rewards weight at this point, then no one has anything to complain about.

      • Bopper

        July 13, 2018 at 1:29 am

        Agreed, SuperGT has been balancing their competitors with success ballast since before BoP was a thing, and they’ve only had to do minor tweaks to the system over decades.

  2. JEZ

    July 12, 2018 at 2:21 pm

    Not sure why John/Sportscar 365 keeps thinking the BMWs had a power reduction before CTMP. As I said in that post, they had a power INCREASE for CTMP. They had a power decrease before Watkins Glen. The CTMP increase gave back half of the decrease from Watkins Glen. This increase looks to give half of the remaining back, so net they are still a little below Mid Ohio after 1 big decrease and 2 smaller increases.

    • Steve

      July 18, 2018 at 4:31 pm

      Correct, the BMWs got a small boost increase for CTMP and an even smaller one for Lime Rock.

  3. Jake

    July 12, 2018 at 3:31 pm

    IMSA just wreak’s of collusion. In GTLM its been Porsche setting the pace at the last three rounds. Nothing to bring them in, and if you look, Porsche and BMW are at the back of the championship. STOP manufacturing title races via BOP. Balance the cars on potential performance alone, and leave it at that.

  4. Panzerwagen

    July 12, 2018 at 4:38 pm

    So 3rd Place is the new 1st place for avoiding ‘success’ attributed BoP? That Benz is getting hefty…

  5. Matt

    July 12, 2018 at 4:39 pm

    I’ve got to say – the +15kg for Lexus is overdue. They have set the fastest qualifying and race laps at every event since Sebring. They’re up to 0.5s faster than the rest of the field in qualifying, and they walk away from the field the first stint of each race. Only because they usually manage to shoot themselves in the foot during each race have they managed not to get on the podium more.

    The Lexus is now within 10kg of the AMG GT3, which is a very similar vehicle in terms of power and power delivery. I think this is a step in the right direction.

    • TF110

      July 12, 2018 at 6:05 pm

      The AMG GT3 has the biggest engine that’s why it is so heavy. The power of the engine is pulling all the weight like it’s nothing. Lexus has a 5L V8 vs 6.2L V8 for the AMG. There’s the difference between them and why they weigh what they do.

      • Matt

        July 13, 2018 at 8:29 am

        The Lexus is a 5.4L V8, and the restrictor is +3.0mm vs. the AMG GT3’s larger 6.2L V8. Both Lexus and AMG motors make ~550hp. It seems logical that their min weights should be about the same. These BoP changes put them within 10kg of each other.

    • Napster9

      July 16, 2018 at 7:43 pm

      The Lexus has a major advantage and they still find a way to throw it away.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

More in IWSC