The key to getting the tyre to work as it should, is in what heat you get in to it while at working speeds. The optimum is 3psi. So if you start at 36 r and make 39 hot you have it right. If you start at 36 and make 42 hot it is too soft cold and will over heat and slide when it is over heated and in extreme cases melt and fall to bits. You see a lot of tyres that the owner is so proud of cos they are such good riders they can melt the rubber. Guess what……. They are running them too soft and anyone can do that to a tyre. Even worse when you have the pressures too high, because the tyre can not heat and it will not grip. Ask Rob. He found this at Taupo on the track. Anyway what ever works for you is good.
If you have watched us at the track we take the tyre pressure every time the bikes goes out and comes in. Have a look at the tyre surface and you can see if it has over heated or not. If it does you will note a second a lap will go on as Gary can not corner as well. If it is to cold ( too much pressure ) Gary will drop up to 2 seconds a lap and risk a bin. You really need to sort the pressure out before you can recommend or bag a tyre type. All tyres work differently. Ie amount of sidewall movement, case construction etc, etc etc relates directly to temperature generated. This could be why you have problems on some day and not others. Ie the temperature of the day and road surface and how hard you push the tyre around etc.
You can limit the uncertainty by starting at optimum and that reduces the extreme at both ends of a road ride.
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