Bridgestone S21's - Page 6 - Kawasaki
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post #51 of 55 Old 11-28-2016, 05:22 AM
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I rode the Supercorsas SP V2 for the first time now and after 3500 miles I am super impressed with both longevity and grip. Whoever hasn't tried should. I still have another 800-1k miles out of my rear tire. I know it costs a lot more but you cant put a price on grip/thread-life.

'16 zx10r Matte Gray
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post #52 of 55 Old 12-01-2016, 12:34 AM
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good feed back for the s21, rain and wear where my biggest concern rather than outright grip I don't believe I'm ever going to get the tire to the max on the street, and track days ill stick with the rs10's
so I'm making the call to the dealer to get a set fitted next week when the gen 5's in for its overdue 18,000klm service,
still got to sing the praises of the pr4 tires I had fitted from new though, they have served me well
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post #53 of 55 Old 02-14-2017, 10:17 AM
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I had the combo s21 front and T30 back months ago and rain and dry all good....

changed to all s21 and in the rain the back does not like the painted lines... dry they are superb but on wet they are not at the level of T30 or PR4
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post #54 of 55 Old 04-21-2017, 03:36 AM Thread Starter
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Bumping for anyone who's considering the new Michelin Power RS's but didn't get a chance to check feedback on the S21.

2016 - ZX-10R KRT Winter Edition
2008 - WR450F Motard (Sold)
2004 - GSXR-600 Track (Sold)
1964 - AJS CSR 500 Thruxton
1963 - Triumph Chopper
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post #55 of 55 Old 04-21-2017, 06:56 AM
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Have run S20s on a few bikes and have been happy apart from that they wore quickly. I hear that's sorted with the S21s, but I now just run T30s on the road as I reckon it's what 500GP racer Ron Haslam uses on all his track school bikes and his ex WorldSBK son uses the same, so they should be good enough for me on the road.

All those saying about problems with RS10s on the track...That is not a specific trackday tyre....It's a fast road / track tyre.

Why would you fit that instead of the track spec R10 tyre?

The R10 is a fantastic fantastic (so good I had to say it twice) tyre. You have to keep on top of tyre temperature, but it made my old GSXR 1000 K5 corner like on rails and I expect it will be even be better on my ZX10R when I fit a pair.

The tyres need heat and I have highsided myself off the bike by falling foul of this, but this was on the K5 and I would imagine the ZX10R may save my arse with it's electronics.

The tyre is actually road legal and I have used them on the road, but again, you better make sure it's a hot day or you have a new bike with electronics.
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