Need help with tires!

[Mapoipoi]

I will post up a picture later, but today I found the tires of my motorcycle have been turning blue at the edges. This is a relatively new tire, probably only 1000 miles on it with 1 track day. It's been four days I haven't gone for a ride but I am wondering if the extreme heat temperatures as something to do with it as the bike was left outside in the heat....

My question is:
Do I need to change the tire immediately? If I have a track day coming up, can i confidently lean it? Is there a way to get rid of the blue or am I *****?

[skapan]

Where are you located? Somewhere hot? Check the manufacturing date of the tires, its molded in to the sidewall.

[Spd_Dmn]

I've seen polar opposite opinions on this topic, but I'll tell you what I've been told and my experience. The blueing is the oils in the tire rising to the surface. This happens when they heat cycle. When you did your track day, I'm going to guess you didn't use tire warmers, so you probably heated and cooled your tires 6-8 times during the day. If you were riding at a level more aggressive than you do on the street (and I would hope you were), and you dropped your pressures for the track (again, I hope so), you put a lot more heat in them than when you ride on the street. All in all, this isn't a terrible thing. The more you heat cycle any tire, the harder it becomes. This is worse with race tires that start out very soft and sticky and will eventually turn to bricks if you heat cycle the s*** out of them. I spoke to a racer friend of mine about the blueing on his tires and he said that's about the point when the slicks drop down a level in performance. For a top-level rider, that means it's time to get new tires, but to mere mortals like me, it just means they aren't new anymore. I bought a set of take-off slicks from him and used them at Road Atlanta a few weeks ago. I have to say, there was no "greasy" feeling to them at all. I rode with complete confidence in them all weekend long, and after actually using the whole tire, the blueing was gone and it has not returned since the weekend. I was using warmers, so I wasn't heat cycling them more than twice.

Long story short, unless you are an expert/pro-level rider, I wouldn't worry about it. I'm guessing that's not you since you're asking the question in here, so press on with pride!

[Darkangel]

Your tires are fine, no need to replace unless you are A level track day riding.

[Mapoipoi]

hahaha. Yes. definitely not at a point where I can call myself a pro rider/racer.
I called Michelin (I am running the commercial version of the Power ones) and they gave me the number of a few racing schools that run the tires. Long story short, the person gave me the same story you guys are telling me, that basically it's a chemical reaction between the heat and the tire and that with a few progressive leans I will probably get rid of the blue on the edges. He even told me that some of the riders in the school run the tire until the grooves are completely GONE and it still runs fine...

Guess I don't have to replace the tire anytime soon...phew...

Thank you so much everyone for the feedback. Really appreciate the info this forum has to give. See you guys on the track.

[Triple Threat]

What cold temperatures were you running during the one track day?

Triple

[Mapoipoi]

Triple,

I'm not sure. I know that right after I got off one session to warm up the tires I set it to 30 F/ 30 R hot and made sure it stayed that way throughout the day.