The Avon Tyres British GT Championship will begin at Oulton Park over the Easter bank holiday, signalling the tenth year of Avon Tyres as the series’ title sponsor. the tyre supplier has introduced a revised slick tyre for the 2015 season, to be supplied to all GT3 and GT4 teams on the grid. Avon says the tyre has increased durability and performance across a greater range of ambient and track temperatures.