I didn't feel like the Shinko had much grip, and at triple digits they didnt feel comfortable I replaced the Shinkos, after a 1,000 miles or so, with some Michelin 2CTs and it was night & day difference. Like others have said, stick with the 18,000 mile tire. I've only got 15,000 miles on the 1125R, and I'm putting on my third set today, not counting the Shinkos.