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It's not just hard and soft compounds any more but rather the blends they use to make the rubber. Tyres with a fair whack of silicon or silicon polymers have the best of both worlds in both grip and service life. When I first got my bike the average life for a rear tyre was 3000km (careful riding) but this could be reduced to about 25 spirited laps of the local race track where the tyres ended up being melted into oblivion. Now I use silicon based hoops and get much more grip and about 10 - 13 K from a set of tyres. It was the same when I used to be involved in car racing. We used a bridgestone control tyre (soft and sticky) which would last 1 meeting (About 45 laps, $1400 ouch). The class then switched to a yokohama control tyre (high Si content) and the WRX was 1 sec a lap quicker with the tyres lasting more than half the season. These things are slicks with a few lines cut in them for light rain.
Mark
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