The tuned mass damper was introduced as part of the suspension system by Renault, on its 2005 F1 car (the Renault R25), at the 2005 Brazilian Grand Prix. The system was invented by Dr. Robin Tuluie, and it reportedly reduced lap times by 0.3 seconds: a phenomenal gain for a relatively simple device.[1] The Stewards of the meeting deemed it legal, but the FIA appealed against that decision.