As is the case for Misano this weekend, set-up was key at Silverstone, mainly due to the rippling asphalt that many claimed was in a worse state despite resurfacing in several corners. “MotoGP bikes are very stiff, the tyres are very stiff, and through the bumps it's very difficult to stay on the limit and at the same time try to be smooth,” described eventual winner and new championship leader Dovizioso. “You use a lot of energy to try to combine this. So it's very demanding. With every acceleration you have a lot of movement from the rear tyre so you have to pull the handlebars to try to stabilize the bike. It's very difficult.”
“The level and these tyres and bikes are getting up to now [mean] it’s like a qualifying lap for every single lap of the race,” offered Red Bull KTM’s Bradley Smith, one of the most articulate scholars of the art of MotoGP and a rider still trying to find some magic elixir with the new RC16. “The level that we need to ride to get a good result now means you have to be on form, you have to feel good and move forward.”
The 26 year old cites the volume of extra saddle hours his fellow athletes undertake as one reason for the longevity. In Rossi’s case the Italian has admitted that the dirt track and off-road riding at The Ranch – risks considered – have preserved his love for two-wheels and speed and helped hone his technique for the narrow capabilities of control tyres and the development of sophisticated electronics that have pushed riders to approach MotoGP in a particular way. Being surrounded by the Academy youngsters has locked his competitive juice into a slow-feeing drip.
Source : http://www.telegraph.co.uk/cars/features/valentino-rossi-biggest-name-motogp-battles-grid-half-age/