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General Category >> Technical >> GP4k 24-571 tires (24x650)
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Message started by goatstick on Oct 10^th, 2009, 6:56pm

Title: GP4k 24-571 tires (24x650)
Post by goatstick on Oct 10^th, 2009, 6:56pm

A little over a month ago I bought a non-folding GP4k Black Chili 24x650C tire. It's new from Conti this year and I thought maybe it would be worth trying out on TxDOT's boulder-seal. I finally got around to mounting it last night and went for a short fast group ride this morning. This tire is a little cheaper than the folding 23x650C triathlons I've been running most of the year and I was a little afraid that the slightly cushier tire might cut my speed. It's a lot lower tpi so I expect it will be a little more flat-prone but th pic seems to indicate another layer that is maybe for flat-protection that the triathlon doesn't have. Results so far: it's a slightly cushier tire, no flats, and I can't tell any decrease in speed whatsoever. I think I'll be moving to this tire for a training/travelling tire and reserving the triathlons for racing and a spare foldable travelling tire.

24-650c:
http://www.conti-online.com/generator/www/de/en/continental/bicycle/themes/race/recetyres/grand_prix/grand_prix_en.html
23-650C triathlon:
http://www.conti-online.com/generator/www/de/en/continental/bicycle/themes/race/recetyres/GP%20Triathlon/gptriathlon_en.html