Formula 1 tyre supplier Pirelli has unveiled their wider specification of rubber which it will use under revised regulations in 2017.
Under next year's technical regulations, an increase in the permitted levels of downforce means that lap times are set to be quicker, meaning Pirelli has opted to produce wider tyres.
The wider tyres will predominantly aid the increased lap times through better cornering speed and acceleration.
The front tyre, which is currently 245mm wide, will increase to 305mm. The rear tyre will grow from 325mm to 405mm.
The size of the wheel rims will remain at 13-inch despite initial speculation over a potential increase in size.
Overall the tyres will increase in size by 25% and this is the case for the slick, Intermediate and Wet compounds.
Pirelli will begin testing with 2017 size tyres in August, having already begun initial trials using current-size tyres fitted with prototype elements.
Pirelli returned to the sport as sole tyre supplier in 2011 and will next year begin a new three-year contract.