Bridgestone’s Kobayashi on the 2010 tyre changes

This week’s Valencia test was the first opportunity for the teams and drivers to sample Bridgestone’s 2010 specification Potenza F1 tyres. The new front tyres are 20mm narrower than 2009′s – a move designed to redress the balance of the cars after grooves were removed for the start of last season. With refuelling now banned, the rear tyres also feature a new construction to cope with cars that will be heavier for longer during Grands Prix. Tetsuro Kobayashi, Bridgestone Motorsport’s technical manager, explains more and reviews testing progress…