I've never seen a street tire run at 25psi hot. That is like 21psi cold...which is way low for a street tire. Most people think "lower the pressures for track use so you have more grip". But street tires have a higher silica content and build heat quicker; they aren't made to handle low pressures combined with the loads generated at the track. The lower psi will allow the carcass to flex more, generating even more heat. Not only will they be unstable, they will overheat, get greasy, and give you some drastic wear. Hell, I run my Pirelli race rear tire at 24-25psi hot depending on compound, conditions, etc. I can't imagine running a street tire that low.
The Evos are the DOT race tires. 33ish/25ish hot pressures. I have no idea how a race tire would wear pressured up to 35PSI and once a funky wear pattern started track use at the correct pressure might have exacerbated the problem. I would either get in touch with Stick or David at Island Racing and see what they say though.
I thought the "Supersport" version was the street version, sorta like the Q3's. But I don't keep up with all of Michelins name changes. If he was on the full blown race tire, then disregard my previous post.
Nope again. This is a power supersport evo 50:50 street/track tire. Michelin recommends 25 psi cold pressure for track use. I had 4-5psi pressure increase ,29-30psi hot pit (-ish) pressure (immediately get off the bike, grab my gauge and take a measurement).
I always fitted Michelin tires on my K6. This is the first time I'm having problems with them. I will try their new power rs ,being positively biased. I'll report back if/when I'll visit the track.
OK. My bad. Chris was right. Melka needs to make his tire naming less confusing. I thought the Evo was just race tires.
25 is the track use pressure for the race tire. Sure you are not confusing the Evo and the supersport Evo. Have you spoken to your Michelin rep
I am just chalking this one up to the blind hog finding an acorn / stopped clock being right 2x a day phenomenon...
I looked and Michelin site says 27 starting. By chance do you use rear brake or a lot of engine braking?
While that (25psi cold) is a lot better than 25psi hot, that still sounds low for a street tire. When I used street tires (like on the 675R Staff bikes the school had), they were around 28-30psi cold IIRC. Any lower and they would overheat.
yes, all the street tires I know of need 29psi cold for track. But Michelin is supposed to take advantage of their 2ct+ and adaptive casing technology borrowed from their race tires and is the only one recommending 25psi cold for track use on a 50:50 tire. See the link I posted above
Yes I have. It wasn't only me having this wear pattern. My buddy, too , and another friend from Athens. as I already said, too much coincidence here...