Talk:PORSCHE 911 RSR (2015)/@comment-24.163.59.111-20160128115336/@comment-30838914-20170410142159

Old thread, I was looking around during the latest upgrade sale...

Performance regulated may be part of BOP (Balance of Power) for GT-class racing. Others have mentioned GT racing and FIA. The cars are restricted on engine size and power. Since they're based on the production counterparts, handling, braking, and weight can vary amongst the competitors. Imagine a Bentley racing against a 911. The 911 would stop and handle better while weighing significantly less. The BOP is flexible and can change many characteristics even fuel tank size.