Sebastian Vettel has revealed that he was not able to see the kerbs when testing Pirelli's bigger 18-inch tyres, which will be introduced for the 2022 Formula 1 season.
Along with a new set of technical regulations, Pirelli's new rubber will give the teams even more to think about as they try to get the most from the tyres.
Every team apart from Williams have tested the new 18-inch tyres in preparation for next season, with wheel covers also part of the 2022 machines.
"The large wheels make the view to the front even worse," Vettel told Auto Motor Und Sport.
"There are also all the mirror mounts in the way. It was better when the mirrors were attached to the halo. With the covers and the big wheels, you can't see the kerbs at all."
In recent years, the drivers have been critical of the tyres due to overheating, which increases wear and impacts grip levels, when trying to push during a race. After conducting his test at Silverstone, Vettel feels that this problem may have been solved.
"You can drive longer at the limit without them overheating," said Vettel. "They are more comfortable over the kerbs and offer more grip in slow and medium-speed corners.
"In terms of feeling, I was faster in these sections than with the regular tyres."