In this video I test Metzeler's new Sportec 01 sports tyre on my Suzuki GSX-R750 at Donington Park. They're superb, but if you're on a budget you can also buy the previous Sportec M5, M7 and M9 versions at a much lower cost, which I also try on the same day. It’s interesting to see and feel how tyre technology has evolved in the past 16 years. I also get to ride on the new Sportec 01 RS, which Metzeler reckon is their sportiest ever road tyre…