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Reply to "Temperature and Deflation Calibration of a Continental Townride Tyre"

I always inflate to 110 psi prior to pre-measurement calibration. I haven't noticed any "creep" and like Pete, my post-measurement calibrations are typically within 1 or 2 counts, which is what I expect due to temperature changes.

My Trek came with Bontrager RaceLite Hard Case 700x32 tires, which aren't a particularly expensive or high-tech tire. They have a slick tread and a recommended 110 psi pressure. As with all my measuring bikes, I always buy a spare wheel and set it up with a counter, so that when I do leisure rides, I can swap off the counter by just replacing the entire front wheel (saves wear and tear on the counter as well). When I set up the measuring wheel (with the counter), I bought the same Bontrager tire and used a thorn-proof tube and a kevlar tire liner (e.g., http://www.biketiresdirect.com...lat-away-tire-liner). I'm paranoid about punctures, especially on the front wheel. As a result, I've never had a puncture on the front while measuring. I have had a few on the rear, but with tools, tubes, and a patch kit, I can continue with a measurement without having to return to a calibration course and start the day all over again. Anyway, the thorn-proof has very thick rubber where it faces the tread and with all that rubber and kevlar inside the tire, 110 psi inflates it as hard as a rock.
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