RonniB
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Posts posted by RonniB
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all tires have an optimum temp and pressure setting, ask an expirienced tire tech and he/she will be able to tell you. The bridgestone bt003rs I run, really like 34 psi hot and get about 50-55 degree celsius, which is good for road compound tires. But I found that it's the hot pressure setting that decides how the tire performs (and with that changes the tire temp)
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tend to go out at a fair pace to warm up the tires quicker, just don't go beserk in the first couple of corners. I use two indicators for tire temp, one is feel from the front, when it starts to feel "solid/firm" then it's good and the second is pressure, which i measure after each session. I don't really concern myself with the rear, they always heat up faster than the front and slides are more controllable.
Ronni
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Hi,
new on board, but have been lurking for some time.
Have a question regarding tire sizes vs profile. I run Bridgestone bt003rs
I run a Honda NC30 as a track bike, it's tire sizes is 120/60-17 and 150/60-18. The rear I have changed to a more modern 17" wheel and it's the same width (4.5") as the 18" and the recommended tire size is 150/60-17. Ride height is retained at rear by a modified linkage.
But I have found that I have more tire left on the front than on the rear, I use up all the availible tire tread on the rear, but have aprox 8mm left on the sides of the front, when pushed hard the rear just slides, so I really are on the last tread.
My idea is to put on a 160/60 tire, I guess that it will be a bit rounder in the profile on the same size rim as a the 150/60 tire, giving a bit more tread for heavy lean....., what do you guys think??
Ronni
Tire Sizes
in School Questions/General Discussion
Posted
well, rims dictate how big a tire you can use, my 4.5" rim will take both 150, 160 and 165 wide tires. But the profile will be affected, I spoke to a very expirenced track rider, riding the bike as me, he said something interesting which I hadn't though of. When you go wider the edge profile gets rounder, this is bad since new tires are designed to have a platau/flat part when fully leaned over. So you will actually decrease the contact patch.
But if you go fast enough, this will be negated be the carcass deforming a bit.
So a bit wiser, but a bit more uncertain...
Ronni