Seven-time Supercars winner Jamie Whincup wants to see downforce significantly reduced next season to give fans more competitive races.
Rules changes in 2020 include downforce being reduced by around 15 per cent after DJR Team Penkse won 20 of 32 races this season.
Triple Eight star Whincup won five races in 2019, including the season-ending Newcastle 500 on Sunday, but wants an even bigger downforce reduction next year.
"The numbers getting thrown around at the moment aren't probably as high as what we'd like, we'd like to see a little bit more aero ripped off the cars," Whincup said.