IMSA updates BoP for Watkins Glen, adjusting Porsche 963 weight
Motorsport.com • 1 min read • Latest: Jun 22, 2026, 8:35 PM
Last updated Jun 22, 2026
IMSA has released a balance of performance (BoP) update ahead of the Watkins Glen race, impacting the Porsche 963 entries. This marks the first time a GTP/Hypercar will race with a weight specification differing from its original homologation parameters due to a previous separation from factory entries. The update aims to create a more competitive field and maintain fairness among competitors. It specifically addresses the private Porsche 963 from JDC-Miller Motorsports, distinguishing it from factory teams and also referencing Aston Martin's past weight specifics in WEC competition. Teams will have to adapt to these changes as they prepare for the upcoming event.
- •IMSA updates BoP for the upcoming Watkins Glen race.
- •Porsche 963 receives a weight adjustment outside original homologation.
- •Changes stem from separating private teams from factory entries.
- •Aston Martin's weight status in WEC is also considered.
- 8:35 PMMotorsport.com — IMSA BoP update for Watkins Glen: Who has an advantage?
"Once again, IMSA has found a pragmatic solution to a lingering problem. Following the BoP separation of the private Porsche 963 from JDC-Miller Motorsports from the factory entries, a GTP/Hypercar receives a weight specification outside its original homologation parameters for the first time ever—unless Aston Martin previously ran lower than 1,030 kg in WEC competition, where the BoP remains ...Keep reading
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