Michelin Power Race Tire Direction Help - Chicagoland Sportbikes
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post #1 of 23 (permalink) Old 05-26-2007, 02:15 PM Thread Starter
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Michelin Power Race Tire Direction Help

I got my tires mounted for Road America and I think the rear tire was mounted backwards but am not sure. The arrow on the rear tire is pointing in the opposite direction of the wheel rotation, but the arrow has the word "rear" written in it. So, is it pointing to the rear of the bike, or is it just saying rear wheel? Because, as you can see below, the way it's mounted now, the tread pattern matches the front wheel. Is this something special for Michelin Power Race tires? I thought on all tires the arrow should point to the forward rotation of the wheel, right?

This is the front and the rear wheel (top of picture is forward rotational direction for both wheels) and the tread on both tires is in the same direction, but...


isn't the Rear arrow pointing backwards?


This is the Front arrow. Note the tread direction:


This is the Rear arrow, opposite to the front, but tread direction is same.


and just for good measure, here's the whole rear wheel with the arrow going counter-clockwise, but the wheel rotates clockwise.


Please confirm if the rear tire is indeed mounted backwards...
Thanx,

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post #2 of 23 (permalink) Old 05-26-2007, 02:30 PM
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Tire is installed, backwards, the arrow on the side should be pointed in rotation direction, regaurdless of what you think the tread should flow, mezlers are the same way...

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post #3 of 23 (permalink) Old 05-26-2007, 02:33 PM Thread Starter
I'd rather be railing :)
 
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Ok, thanx. That clears it up.

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post #4 of 23 (permalink) Old 05-26-2007, 02:44 PM
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Concur with Mopar, it's backwards.

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post #5 of 23 (permalink) Old 05-26-2007, 02:46 PM
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The front tire tread pattern is backwarks because it handles braking forces. So yeah, the back tire is wrong.

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post #6 of 23 (permalink) Old 05-26-2007, 02:52 PM Thread Starter
I'd rather be railing :)
 
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Dang, I know I should've checked it before picking them up... oh well... will get it remounted.

Just for curiosity's sake: what happens if you run a tire backwards? Does it handle very different when leaned over and while braking? Probably so...

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post #7 of 23 (permalink) Old 05-26-2007, 03:21 PM
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i'm impressed that was my first post from my blackberry, i was in line at target buying a new cooler

the only tires i have ever run flipped, were slicks, never had any experiance with DOTs. however, on a clean track i dont see what the big deal would be.

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post #8 of 23 (permalink) Old 05-26-2007, 03:23 PM
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Run it by JIms..... he is probably around.


Again, agree with Mopar, It's probably OK anyway.


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post #9 of 23 (permalink) Old 05-26-2007, 03:25 PM
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i`ve been told in the past that you can successfully run the british made dunlop slicks if mounted backwards.

dot`s however i`ve been told that there`s a grain to the way the rubber is laid that will effect the performance of the tire.

sounds like we better call mythbusters

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post #10 of 23 (permalink) Old 05-26-2007, 03:40 PM
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Quote:
Originally Posted by BLARNEY View Post
Again, agree with Mopar
2 times in one thread?!?! man.. this new mod status is really helping me out!

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post #11 of 23 (permalink) Old 05-26-2007, 04:15 PM
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I can't imagine them being alright facing the opposite direction. The way the rubber/silica/cords/whatever compound is setup has certain cleavage that would undoubtedly be thrown off by running them at highspeed in the opposite direction that they're meant to be run. This is just speculation on my part, but I can't see that as being safe or right.

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post #12 of 23 (permalink) Old 05-26-2007, 04:23 PM
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Quote:
Originally Posted by MoparBoyy View Post
2 times in one thread?!?! man.. this new mod status is really helping me out!


Dude.....your a mod, you'll f&*kin ban me if I don't agree with you....





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post #13 of 23 (permalink) Old 05-26-2007, 09:49 PM

 
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I flip rears all the time. I haven't flipped a front that I recall. I've done it with 208's.

I've heard that car radial tires shouldn't be moved to opposite sides for some reason. But I've never heard anything about bike tires.

The one thing you need to be careful of is the tires profile. If you wait to long to flip it, you're tire won't be symmetrical. The other thing is the tread pattern in the rain. If the tire has a unidirectional tread like a pilot power non race version. A flipped tread pattern like that would channel the water toward the center of the tire instead of away.

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post #14 of 23 (permalink) Old 05-26-2007, 09:52 PM
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Ron hix has told me you can flip rears all you want, and Ken used to do it all the time if I remember correctly, but you cannot flip the front.




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post #15 of 23 (permalink) Old 05-26-2007, 10:09 PM
 
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Quote:
Originally Posted by BLARNEY View Post
Concur with Mopar, it's backwards.

Tom
+1

While you are at it, shove the fork tubes up to compensate
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post #16 of 23 (permalink) Old 05-26-2007, 10:51 PM
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yep its backwards! rear denotes rear tire, not which way the arrow should be pointing
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post #17 of 23 (permalink) Old 05-26-2007, 10:55 PM
 
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Quote:
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yep its backwards! rear denotes rear tire, not which way the arrow should be pointing
For sure important to keep the rear tire in the rear and NOT in the front! You would definitely need to shove something somewhere to compensate!
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post #18 of 23 (permalink) Old 05-27-2007, 07:38 AM
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I concur, shove the fork tubes up, or add it to the rear.

either way the tire is on backwards, but should be OK

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post #19 of 23 (permalink) Old 05-27-2007, 11:29 AM Thread Starter
I'd rather be railing :)
 
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It's been remounted.

And since we're on this topic, regarding fronts; since the wheel is symmetrical, does it matter which way the tire is mounted on the rim? Probably matters for the brake pad to rotor seating, right? But otherwise, is the front rim only supposed to roll forward one way?

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post #20 of 23 (permalink) Old 05-27-2007, 11:38 AM
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Quote:
Originally Posted by Jammin View Post
It's been remounted.

And since we're on this topic, regarding fronts; since the wheel is symmetrical, does it matter which way the tire is mounted on the rim? Probably matters for the brake pad to rotor seating, right? But otherwise, is the front rim only supposed to roll forward one way?


It also has an arrow on it....... I can imagine that wheels ***COULD**
be disigned asymetrically..... to deal with braking force ( front ) and
acceleration forces ( rear ) better than the inverse.

Most wheel designs have straight spokes..... I can't believe it matters.

Rotors do "take a set" in a specific rotation.


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post #21 of 23 (permalink) Old 06-01-2007, 09:50 AM
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Jay for future reference you can run the rear tire backwards all you want. I flip them around all of the time. The only time you will have trouble is in the rain. The PP Race doesn't tread water very well anyway but it won't tread any water flipped around backwards. Brian Lacy, a fast CCS racer digs through Tommy Masons stack of junk tires all of the time and flips the rears around. If your tire starts to shag, especially at a track like Blackhawk where there are mostly all right hand turns, flip the tire around and get more use out of it.

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post #22 of 23 (permalink) Old 06-01-2007, 10:12 AM
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Flip, flip, flip, front and rear.
Flip, flip, flip, wear good gear.
Flip, flip flip, broke we all are.
Flip, flip, flip, don't worry...it won't scar.


Seriously, I flip the rear all the time. I flip the front as well, just don't need to as much.

Controversial topic because the tires are constructed so that the they are most resistant to "coming apart" if they are run in the correct direction, but a lot of us run them both directions with no issues.

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post #23 of 23 (permalink) Old 06-01-2007, 10:23 AM Thread Starter
I'd rather be railing :)
 
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Oh really. Thanks for the info. I never knew Good tip on trying to extend tire life in this expensive hobby of ours

I figured the only time it'd matter would be in rain. But we should be on rain tires by that time, anyways...

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