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Tire rotation direction Surly Knard

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Tire rotation direction Surly Knard

Old 08-13-20, 11:13 AM
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zabarnss
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Tire rotation direction Surly Knard

I just bought a 2020 Surly Straggler off CL. I noticed that the tire rotation arrows point to the back of the bike when rotated to the top of either tire. Were these tires installed backwards?

Steve
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Old 08-13-20, 11:14 AM
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fietsbob
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IDK cant see from here ... change it if it matters..
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Old 08-13-20, 11:22 AM
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zabarnss
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Sorry I wasn't allowed to post a photo. If it is backwards, does it matter?
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Old 08-13-20, 11:41 AM
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Point towards the force.. stopping is one way accelerating is the other.... which matters most for you?

Generically it does not matter ,
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Old 08-13-20, 12:17 PM
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It probably only matters if you use the tires in conditions that keep them at the edge of their design limits for operation. If you just ride dry dirt and/or smooth pavement at the speeds of the typical amateur, then no big deal.

But it's an easy fix if it bothers you.
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Old 08-13-20, 12:23 PM
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Originally Posted by zabarnss View Post
I just bought a 2020 Surly Straggler off CL. I noticed that the tire rotation arrows point to the back of the bike when rotated to the top of either tire. Were these tires installed backwards?

Steve
Yep. They're backwards. Tires could explode if you run them backwards.
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Old 08-13-20, 12:50 PM
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zabarnss
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Just the "helpful" reply I would expect from someone name Tyrion...
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Old 08-13-20, 04:37 PM
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They may not channel water away properly if they rotate in the wrong direction. The arrow should point down in the front. Not a problem if you are a casual rider.
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Old 08-14-20, 08:10 AM
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According to Swalbe the direction arrows really only matter for treaded tires.

https://www.schwalbe.com/en/profil

Some tread profiles grip better in one direction than the other, some actually mount differently on the front (grip during braking) vs back (grip during pedaling). Smooth tread tires it doesn't matter, but Swalbe says they add the rotation arrows for "aesthetic considerations"
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Old 08-14-20, 08:25 AM
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Depending on the tread design, some people will reverse the rear to get better grip climbing on loose dirt. It is usually more desirable to have the front correct for better rolling.

John
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