I messaged STG and they stand by the 22psi. And based on my experience the other day I believe them. I know a couple posts ago I said I may try 27psi but after thinking about it I don't think I'm gonna change. Why mess with it if it works right. Fury Tom and R6forever seen my tires after a session or two and our consensus was they looked good. But none of the three of us are tire experts
Hey now! :lmao: They did look good expert or not! You dont need to be Mr. Miyagi to tell if tire looks good or bad.:thumb:
Just want to update that the tires have been great so far, I would really like to get one more track day though and test out a higher rear temp. Looking into it a little more, the recommended 22 psi cold from STG and their representative might not be perfect. I still had rear tire slipping issues upon acceleration and under hard downshifting. Upon more research it seems a too low of pressure might improve surface contact but limits the structural integrity of the tire when under heavy loads. This tire might be better suited for a slightly higher 27 psi like a lot of people and the Michelin guys at STT recommend. I will try it out next time, but so far they have been great otherwise and wearing in very nicely. Would love to get these at Road America where I really chew up the right side of the tire and see how to compares to the Q2's as far as durability which would really get charred after a weekend there. Video: http://www.youtube.com/watch?v=BsMVO053BXg Most notably, coming out of 15 and 16 the rear would generally rotate a lot and you can hear it because it held an rpm briefly. Felt like a clutch slightly slipping. And then braking into 17 and 1 it would slide out a little bit. Also coming out of 19 I used to be able to nail it out of there on my 750 with Q2's but I really need to tip toe second gear out of there because it just didn't feel stable at WOT. I've also nearly high sided about 3 times on these at peculiar moments, always preheated at 150 F with my warmers so not a cold tire kind of thing. It definitely feels grippy, especially at lean (13-15 are a lot of fun and I can just slice through there much better) but unstable as I noted. I am beginning to believe a slightly higher pressure will solve that issue since I've pretty much redone my suspension tuning and still have the same issue under the same conditions.
To be honest I haven't tried 27 yet, I was convinced my suspension was wacky and hadn't dialed it all in perfectly since picking my R6 up at the beginning of the season. I finally re-did the tune from the ground up and matched my 750's suspension qualities which are perfect for me. I did one track day and felt great but still had those issues as noted, still slightly tinkering with the suspension throughout the day. At the end of the day, the bike felt great but the tire was still making the same reactions under the same conditions/corners when I was last at Autobahn. It's my conclusion that the pressure needs to be higher and I will try to get another day in to test it out.
Definitely will, they feel great but there are those times when it just gets squirrelly. Pressure of 30/22 (or 30/27 if you prefer) is for track only, fill them up like a regular 2CT or power pure for the road, at least from what I've heard.
power pure is discontinued....super sport shouldn't be it replace the pure and power ! I believe sounds like there trying to sell you there old stock
Start playing with pressures a little... I think you could add 2psi to the rear and see a difference. -Tom
I'll chime in about PSI, although I'm not really sure where I'm going with this; I started an ACC morning with the SS rear set(cold) @ 28psi, but after a few sessions I noticed the tire didn't have that "sandy beach" wear-pattern so I checked the hot PSI after a session and was up to 35psi. I thought that was a bit much so I asked a guy over at the RacerCafe camper and he confirmed. Should see a ~10% raise in pressure from hot to cold. He suggested I raise the pressure up a pound or two once the tires set for the full 40min cool down between sessions. So I did and after that the wear-pattern looked great so I didn't feel the need to check hot temp again. But now this has me thinking.. What would make the tire temp raise so much? Not going fast enough?
FWIW, If you do choose the Pure, it appears to be an exception to the rule. I have been getting better this year and started upping the pace and started sliding the rear on exits with the Pures. I started lowering pressure in the rear down to about 27. It did not get better. I talked the STT tire service guy (Rob I think). He said to increase the pressure on the rear. Saying it was an unusual tire and one of the reasons it was so short-lived on the market. I tried it @ 31 and it has been working for me.
I understand that aspect of tires/psi in relation to heat. But I was at the generally recommended pressure to start the day and saw the incredible hot-pressure gain. I guess I meant specifically, why was my tire getting so hot? The only answer I can come up with is that I must have been lighting that rear up more than the average person. Or my air gauge is way out of wack and constantly reads high :jester:
This is a super sport after 3 days, (1 day in I at Putnam, 1 day in I ACC N, and 1 day in A at ACC N) All 3 days set to 27 cold (no tire warmers). I did slide on power out of the corners but I think it's expected if you're hard on the throttle. The same on heavy braking, the rear is almost in the air so spin is expected. I only had 2ct in the past and the SS felt so much better. Can't wait to try some dedicated race tires ... PS My bad, this pic was after just one day at Putnam ... I'll post the right one later today. EDIT Here is the pic after running 3 days
Not sure what kind bike u running but I wanna try them . I have BMW s1000rr running power 3 and I hate them in A group.
Per David Grey, the street Michelins (P3 & SS) are meant to operate at 150F. http://www.youtube.com/watch?v=QNV039Zq1aQ
Eh, it's not a bad idea but air pressure generally gives a better indication of the heat inside the carcass of the tire rather than just surface temperature. But for regular DOT tires I wouldn't worry too much.