Gp4000s ii twinpack undisputed market leading race bike tyre the best balance of performance across all conceivable road conditions combining low rolling resistance great puncture protection high mileage and super sticky grip in both wet dry conditions the continental grand prix 4000s ii provides the best all round road performance that money can buy voted the peoples choice road tyre by the readership of the popular roadcc website and winner of countless race bike tyre tests over the p