Tire wrong rotation direction

  • gordone
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Tire wrong rotation direction

29 Jun 2017 22:35 - 29 Jun 2017 22:35
#765708
Hi,

What Impact does wrong rotation direction on the front wheel has under wet condition?
The previous owner has set the rotation wrong for some strange reason, and I was thinking don`t doing something with it before winter,
but I`m not a experience driver and was wondering impact it would have for me.... see attached photo.
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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Last edit: 29 Jun 2017 22:35 by gordone.

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  • Patton
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Re: Tire wrong rotation direction

29 Jun 2017 23:08 - 29 Jun 2017 23:55
#765709
Click here > Sipes and Slots

Here's my understanding, which might be wrong ---

Some tires are designed for using on either front and/or rear. Such tires may have rotational arrow instructions in one direction for using on the front and in the opposite direction when using on the rear. In such case, the tread design is presumably appropriate in either direction.

I believe, but am not positive, that when manufactured, the area where the tread connects is an overlapping area that best resists separation from acceleration force in one direction (on the rear) and best resists separation from braking force in the other direction (on the front). This refers to pressure applied to the tread connection area by the road surface during acceleration or braking.



If the tire at hand is intended for a different rotation on the front than is currently fitted, I would have the tire remounted to comply with the prescribed direction. Because the "V" slots are likely designed to promote traction in wet condition by channeling water away from the tire when rotating as prescribed by the manufacturer.

Good Fortune! :)
1973 Z1
KZ900 LTD

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Last edit: 29 Jun 2017 23:55 by Patton.
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  • gordone
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Re: Tire wrong rotation direction

30 Jun 2017 00:16
#765711
Thank you for the information, I look into these and set of the time to turn the wheel, It`s look like I can just turn the whole wheel and not the tire, the brake plat is the same on both sides.
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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  • 650ed
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Re: Tire wrong rotation direction

30 Jun 2017 06:10
#765721
No offense intended, but It sounds like you're trying to avoid doing the right thing - remove the tire and mount it correctly. If you try to turn the whole assembly around you will run into other problems that are more difficult to deal with - for example, the speedometer gear drive is on the left side of the wheel. Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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  • Tyrell Corp
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Re: Tire wrong rotation direction

30 Jun 2017 07:25
#765728
you know the answer here....

I would give the whole bike a very careful look over, anyone dumb enough either to pay someone to do that, or do it themselves is a hazard.

Besides you can be sure the last muppet who did that wouldn't have bothered to balance the wheel.
1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces

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  • SWest
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Re: Tire wrong rotation direction

30 Jun 2017 07:40
#765730
If the tire is over a year old, I'd replace it and balance the new one. Tyrell is right, check everything else.
Steve

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  • martin_csr
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Re: Tire wrong rotation direction

30 Jun 2017 07:50 - 30 Jun 2017 08:17
#765733
You can check the date code on the tire, but running it backwards may have compromised it, so as suggested by SWest, replacing it seems like the thing to do. Motorcycle riding is already a risky endeavor, so why add to the risk? Maybe not where you live, but a visit to the hospital is rather expensive here in the USA, so it's a lot cheaper to just go ahead & replace the tire. or both.
Last edit: 30 Jun 2017 08:17 by martin_csr.

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  • gordone
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Re: Tire wrong rotation direction

30 Jun 2017 09:26
#765742
i see your point all, I will look into it, I have only driven when the road is dry until now so it has not been a problem, but planning to take a longer driver these summer.

So you all change tire each season?
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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  • SWest
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Re: Tire wrong rotation direction

30 Jun 2017 10:52
#765748
I get 12,000 miles on the front so it's good for two years.
Steve

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  • martin_csr
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Re: Tire wrong rotation direction

30 Jun 2017 14:31 - 30 Jun 2017 14:42
#765773
By gordone: So you all change tire each season?

No, but it depends upon the tire & mileage. Usual reasons for replacing a tire: worn tread. tire damaged. tire old.
In your case the tire might have been damaged by running it backwards but any damage is probably impossible to see.
I wouldn't want a tire to fail at speed, especially when doing a high speed run. However, it may be that the tire is fine, but there's no way to know for sure.
Last edit: 30 Jun 2017 14:42 by martin_csr.

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Re: Tire wrong rotation direction

03 Jul 2017 14:57
#765979
Thank you all for taking time to answer my questions.
I will look into it and upgrade my tires.
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

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  • martin_csr
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Re: Tire wrong rotation direction

04 Jul 2017 06:13 - 04 Jul 2017 06:16
#766022
I'd be curious to know what the tire manufacturer has to say about reinstalling the tire correctly. They'll probably recommend replacing it to avoid liability, but that's just a guess.
Last edit: 04 Jul 2017 06:16 by martin_csr.

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