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Discussion Starter #1
I had my front tire mounted at a shop, and they switched the rotation direction of the tire on the rim. Obviously on the rear wheel it's a big deal because you have a rotor on one side and sprocket on the other. Since the front wheel appears to be symmetrical I'm thinking it should be fine ( mounted the wheel back on the bike to make sure it fits fine, which it does) but just want to make sure.
 

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FORUM GODFATHER.....R.I.P. PAT
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Direction may be about the tread water dispersal pattern but its main purpose involves the application of laminations. I'd take it back as the shop erred and they should make it right. While it's unlikely the tire will delaminate upon hard braking, it isn't impossible.
 

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For street tires water dispersion can be nearly eliminated by mounting the tire backwards like Michelin Pilots. Some of the racers flip some of the commonly used modern tires (again Michelin Pilots were one tire they mentioned) to get more wear since they may turn more often in one direction and wear on one side without problems on dry pavement. All that aside I would follow the manufacturers direction and get it flipped.
 

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FORUM GODFATHER.....R.I.P. PAT
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Take a look at the treads on many Strom tires. Note the front is often the reverse of the rear. Here's an example with the stock Trailwings. The main forces are driving on the rear and braking on the front, opposite directions.

 

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Discussion Starter #5
I'm not sure I was totally clear. I know the tire needs to be faxing the direction of the rotation arrow, but what I need to know is does it matter which direction the rim rotates? On the front wheel there's 2 brake rotors which makes it symmetrical (on either side), so can the tire be mounted either direction onto the rim itself, for the front wheel specifically?
 

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FORUM GODFATHER.....R.I.P. PAT
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There is slight difference as one wheel bearing is seated in the wheel well an the other butts against the center spacer, not quite seated. Reversing the wheel will offset the wheel a tiny amount.
 

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Discussion Starter #7
In other words, for the front wheel, with the way the new tire was mounted, what used to be the left brake rotor is now the right brake rotor, and vice versa.
 

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Discussion Starter #8
There is slight difference as one wheel bearing is seated in the wheel well an the other butts against the center spacer, not quite seated. Reversing the wheel will offset the wheel a tiny amount.
It's the center spacer the spacer on the lettuce of the bike, that the axle sides through? When I put the wheel on the bike (with the tire rotation facing the correct way) everything appears to be lined up perfectly, just like before. The tire is centered, both calipers mount properly, and the wheel spins freely (minus the normal bit of drag from the brake pads.) If it is important to have the rim facing the same way I'll definitely take it back to the shop today and have them reverse the tire.
 

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FORUM GODFATHER.....R.I.P. PAT
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It's a small difference shown in red as the second bearing is installed, maybe 25-30 thousandths. Installing wheel bearings - How to
This is the rear wheel but the front situation is similar, only with the gap on the other side.

 

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Discussion Starter #10
Thanks for your help! I went back to the shop and they fixed it no problem. I hadn't noticed before but there is a marking on the rim to indicate which direction the rim should be rotating as well. I guess I was just hoping it doesn't matter which way the rim is oriented as I'd already made two trips to the shop at that point, as the first time I'd forgotten my wallet (d'oh). Anyway, all is well, tire's back on the bike and I'll be test riding it tomorrow evening after work (it was raining all day today - while I'm sure it'd be fine I'd rather not do a test ride on a new tire on wet roads).
 

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FORUM GODFATHER.....R.I.P. PAT
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I thought you knew the tire was mounted wrong because the arrow on the tire didn't match the arrow on the wheel.
 
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