Ever wonder what happens when you put a tire on the wrong way?

You know, so that the tire spins in a direction opposing the little arrow embossed on the tire?

Well, one thing that happens is that the rolling resistance must get a LOT WORSE. Like the difference between a bell javelin helmet and a giro aspect helmet at 20mph worse.

Not to mention the handling feels decidedly squirrelly.

Any other thoughts on the deleterious effects of putting a tire on backwards? I’m not sure there are any other obvious negatives but I was surprised that rolling resistance got so much worse.

Been using Conti GP 4&5k’s many years. From time to time one get’s on there backwards and it feels no different. It rolled no different and I think I’m overly concerned about all things Crr. Hell all I roll on day in day out is the GP5k now.

Maybe it’s brand and/or type specific. Curious though, what tire are you talking about?

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Why? How would the direction change the rolling resistance? Is the tire going to deform differently when it’s rolling the other way?

Again why?

I don’t see how the tread on road racing tires does anything for displacing water, changing grip, affecting rolling resistance, or handling. I just think the arrows on them are so that customer support call centers aren’t getting too many calls about which direction to mount them :grinning:.

For bigger tires with a tread pattern that is added for grip and/or displacing water (e.g. gravel or mtb tires, car tires, etc.) it’s another story.

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Are you talking MTB tyres?

It used to be how you changed your tyres from being front specific to rear lol. Better braking/turning on the front, turn it around for better traction and rolling resistance on the rear.

That’s going back a few years, but not to the dark ages.

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Nope, definitely agree with the OP here.

Puncture resistance is also massively decreased, I once punctured 11 times in one ride only to notice when I got home that my tyre was installed (by a combination of two private mechanics) backwards.
Performance of skids is actually a surprising benefit of a backwards rotated tyre. So I guess there’s trade off’s to be had, and it’s up to the rider to determine what way they want their tyres to face.

April 1st came round again fast!

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Can we get more specifics on the particular tires?

I’ve accidentally run road tires backwards and didn’t notice until I pulled them off at their end of life.

Fortunately my current sets of tires don’t indicate direction so I shouldn’t be worried about running one backwards, tearing a whole through space and time, and getting sucked into the resulting blackhole when I ride.

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I mounted my tires backwards once and my doctor said it reversed the aging process!

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Panaracer GravelKing+ Protite shield 38c

Feels squirrelly like there is a steering damper on the bike…if you’ve ever had occasion to have a steering damper on a bike you’ll know exactly what I mean. Otherwise if I was just riding down a straight road I wouldn’t notice a difference.

If you are talking about a gravel tire with some decent tread, yeah, there will be a significant difference in terms of performance. (Especially handling).

But for road tires, I doubt it would make a significant difference. Most tread on road tires are for marketing, not performance. The contact patch is so small and focused that great provides little performance benefits.

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Me too! But before this morning I would have said it didn’t matter for any tire. I lost that bet, sadly.

As said above, with off-road tyres its a way to increase grip. It surely depends on the tread, and whether its symmetric or not.

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That sounds like a super hypothesis to me. Especially given the way the tires feel…and the fact that the cornering/side tread is shaped like a chevron pointing IN the direction of rotation if the tire is properly mounted.

Back when I raced cross I would sometimes run my rear tire reversed so the chevron was backwards under the theory it increased grip but I didn’t want to run a more aggressive tire. Front tire was with the chevron pointing forward.

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I started doing fakies everywhere when I did that :man_shrugging:

I had the same thing happen. I realized I showered that day, so I stopped showering before rides. It hasn’t happened since.

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That gives us some important insight into how you can get away from the group for 40 miles. :flushed:

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The only thing I ever noticed is that if you put them on the wrong way, it is guaranteed that someone will inevitably point it out at a time and place where it is impossible to fix and for the rest of your ride or race it will drive you totally bat shit crazy.

For that reason alone, I am now very careful when mounting tires.

That being said, my take is that the harder it is to find the direction arrows, the less of a difference it makes. I find most road tires with markings do not go out of their way to make them highly visible so I assume they are just putting the arrows on to satisfy the OCD people I.e. It makes no practical difference.

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Of course, back in the day, this was an easy fix for a front wheel…just flip the QR skewer around and you were good to go. Now it is a huge process (made worse if it is tubeless).

Hang on…those damn kids are back in my yard. BRB. :stuck_out_tongue:

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Oh man, that was still in my showering days!

Lets see what happens at Sea Otter this year :cowboy_hat_face:

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A new pandemic forms :man_shrugging:

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