The best way to negotiate corners is to use the ‘vanishing’ or ‘limit point’ to judge entry speed (see Police Motorcycle Roadcraft). Works equally well on track.
On the road you complete your braking before the turn and apply a steady light throttle through the corner.
On the track you carry your braking into the corner gradually releasing the brakes as the lean angle increases, before apexing and accelerating away.
On the road you stay in the saddle, on the track you slide off inside onto your inner thigh and also move the top of your body across. This keeps the motorcycle more upright so the suspension works better.
Lean angle required depends on rate of turn which is a combination of speed and the radius of the corner – not just speed.
Road bikes can lean up to 45 degrees safely given a reasonable and dry road surface, race bikes can lean up to 60 degrees with soft track tyres.
British Superbike School 