gfl61

I'm wondering if anyone here has experience with this. The edges of a set of Pirelli SuperCorsa's that I had run on my Ducati 748 track day bike started to turn blue. Both the front and rear tires had this blue haze on them. I've been told to just run them up to temperature gently and the discoloration will scrub off without any detrimental effect on tire performance and I've also been turned away at tech at a track day because the bluing was indicative of some of the rubber compound's petrolium based components being overheated and boiling off. I did change them for the track day but, I would still like a staright answer about the cause and effect. I was running 30 PSi in both tires at the time and the bike's suspension was stock. Thanks

Thanks again Steve. One more question, what causes the tire surface to turn blue and is it detrimental to the tire's performance?

Thanks for the reply Steve. I can appriciate your desire to keep the topic simple here.

Lets look at track day pressures for D209GPA, D211GPA, D211GP N-Tec and N-Tec Slicks. BTW: all of these have N-Tec construction. The recommended Hot is 33 front and 23 rear. That is hot off the warmers. Don't change or reset them. You are done. That's it. That's all you need to know! Go ride. Ride all day. Does anyone have specific tire combinations they want PRESSURE advice on? I do, Dunlop 208GP-A in 120/70 and 180/55 on a Ducati 748. Intermediate level track day rider. Why are the N-TEC rears run at such a low pressure? Thanks

I've now read through the posts regarding tires and still have a very specific question about tire temperature. I have some limited experience in the car road racing world and tire temperature across the width of the tire is used as a guide for alignment angles and for pressure settings. Now I know that the alignment angle is a moot point on motorcycles but tire pressure was also used to help adjust the distribution of temperature uniformly across the width of the tire and the running temperature of the tire was very important. It's been a while but I seem to remember a range of 170 to 210 degrees F being good and 220 - 230 being too high. I can see the pressure within the motorcycle tire being used to "set the width" of the contact patch if you will, sacrificing stability for traction for instance, but what about the running temperature of the tire? Does any motorcycle tire manufacturer publish what temperature a particular tire's temp should be for optimal use? (Racing teams seem to care about this information as witnessed by the application of an array of IR temp sensors on the swing arm and presumably the on the front fork to gather tire temp data.) Additionally, what exactly is meant by "stability"? How does the rider quantify a stable verses an unstable tire? Thanks for taking the time to answer our questions on this topic.

Howdy all, I'm new to the forum. Started reading the tire info posted by the Dunlop man and am now officially sucked in. Great info. I have some questions but need to finish reading all of the posts first. I've been riding track days since 2001, first on an FZR600 now on a Ducati 748. Done to level 3 with CSS, Loudon, Watkins, Pocono and plan on lvl 4 this coming year if finances allow... Tire info seems to be some sort of dark secret compared to stuff like suspension tuning so I hope that I can find some more useful info here. Thanks to the crew at CSS for all they do for this sport.