The notion that farmers and contractors require different width tyres of the same diameter was the logic behind the launch of Goodyear’s Optitrac range at the Smithfield show.

Developed over the past five years, the range now includes six tyres of various widths but the same diameter – the narrowest being 270mm wide, the largest 750mm. Typical list price for the Optitrac 660-65-28 is £900.