.
GPDA chairman Alex Wurz has criticized F1's introduction from 2021 of 18-inch wheels, insisting the change was done only for marketing reasons and "brings nothing to drivers".
Formula 1 will reveal at the end of this month its 2021 regulations, but one transition that has already been agreed upon by all parties is a switch from 13 to 18-inch wheels, a change promoted by Pirelli, the sport's exclusive tyre supplier.
The new-spec wheel and tyres were tested for the first time last month at Paul Ricard by Renault, with reserve driver Sergey Sirotkin raking up the miles on board a mule car shod with F1's future low profile tyres.
While Wurz understands the reasons for the switch, the former F1 racer insists the change is nothing more than a commercial decision which will add no real value to a driver's task behind the wheel and will only increase the weight of F1's already heavy machines.
"We have commercial decisions that are leading to imbalances," contended Wurz, speaking to Germany's Motorsport-Magazin.
"Like the 18-inch wheels that are to come. Drivers aren't happy because they bring 25 to 27 kilos just for the sake of a commercial benefit. They bring nothing to the driver.
"They may be a bit simpler for aerodynamics, but that argument doesn't count. They are much heavier. The only advantage is the marketing."
Indeed, the 18-inch profile follows a trend in the automobile industry and enhances a car's aesthetics.
But Wurz says that style alone without thrilling races won't prove to be a selling point for F1.
"I was called 'Mr Halo' when many journalists and fans predicted that when the Halo arrived, Formula 1 would be is dead," said the Austrian.
"But we've seen that it has saved a few drivers' and ratings haven't suffered. We've adjusted to it.
"I'm extremely focused on design," added Wurz.
"But whether there is a 19-inch or a 13-inch tyre on a car, if a car is stylishly designed and the races are thrilling, it's not the item that sells."
Gallery: The beautiful wives and girlfriends of F1 drivers
Keep up to date with all the F1 news via Facebook and Twitter
French F1 fans are in for a treat – and a blast from Grand Prix…
For all the talk of fresh momentum at Alpine, Flavio Briatore admits that there is…
Mario Andretti won the 1977 US Grand Prix West at Long Beach on this day…
Formula 1’s bold new era is already under fire – and now the sport’s powerbrokers…
While Formula 1 sits idle this month, Max Verstappen isn’t waiting around, the Dutchman heading…
George Russell insists he’s not losing sleep over the Formula 1 title picture – despite…