New Challenge sizes

3 replies · 204 views

Volsung
878 posts
#1Jul 15, 2022, 9:11 AM
https://www.cyclingnews.com/news/criterium-racers-challenge-has-a-new-tyre-just-for-you/?utm_campaign=socialflow&utm_medium=social&utm_source=facebook.com&utm_content=cyclingnews

Finally some deets on SB 45s. Interestingly they also come in HTLR black. Nothing on Getaways in 45, but they expanded Gravel Grinders to 40mm so they're a good option again.
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ljsmith
762 posts
#2Jul 15, 2022, 3:04 PM
IMHO 550g for a 45mm slick tire is not an acceptable weight. I have some 29x2.1 Snakeskin Thunderburts that weigh less than that. My 44mm Vredestein Aventuras are 480g. I know the weight probably doesn’t make that big a difference, but it sure kills the ride feel making the bike feel sluggish.
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Volsung
878 posts
#3Jul 15, 2022, 3:47 PM
My Soma Supple Vitesses are 48mm and 370g, so I get it. Previously had some Schwalbe Almotions that felt like absolute slugs on climbs but my overall commute speeds were much faster (18 miles each way to college for my 3rd degree).

Also just kinda seems the direction with tires these days. MTB tires are all claiming to be light weight xc tires but then they weigh 975g.

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stu
646 posts
#4Jul 15, 2022, 6:47 PM
If the 36 mm version is 375 g and the 45 mm version is 550 g then there must be some difference other than just width. I'm waiting for a review to find out.

BTW the 35 mm Pirelli Gravel H is 435 g and the 45 mm is 540 g so I think they're constructed the same.

Since bead mass should be constant I'd expect total mass to increase a bit less than proportional to width.
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