Quote:
Originally Posted by Twinshock750
I have a tyre "durometer" which measures rubber hardness.....
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I have a shore A durometer also. Let me tell you something, it's only good for one thing and it's not judging a tire for stickiness. Tires change state at operating temperature and their hardness is only one component of what makes them stick. It's more about their composition. Also some race tires measure hard when cool, then soften up a lot when at temp.
The durometer is good for checking tires for their age or heat cycles. Know what a new tire measures then check during it's lifespan for an increasing number. Note that mounted/inflated often measures differently than unmounted, so be sure to standardize.
Hmmm, never heard of the Alpha 13SP, what is that?