gl1500 front tire


Information and questions on GL1500 Goldwings (1988-2000)
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dvk
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gl1500 front tire

Postby dvk » Sun May 06, 2012 7:56 am



hey guys what causes cupping on a tire ? my front tire has some cupping going on going to replace tire soon but dont want the new one to start cupping thanks .ride safe :D



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budavari
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Re: gl1500 front tire

Postby budavari » Sun May 06, 2012 12:30 pm

Ususally cupping of the front tire is caused by continued low air pressure.

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dingdong
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Re: gl1500 front tire

Postby dingdong » Mon May 07, 2012 10:22 am

Everything effects everything. Low front tire pressure, weak fork springs, low, unbalanced or bad fork oil, worn fork bushings, bad or loose steering head bearings. Surprisingly rear tire problems will cause front tire problems, swing arm loose or bad bearings, rear tire out of balance. Pulling a trailer with too heavy tongue weight will cause front tire cupping. Everything effects everything. No way to say just one thing is the cause. Might be multiple causes.
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WingAdmin
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Re: gl1500 front tire

Postby WingAdmin » Mon May 07, 2012 10:23 am

Some tires (i.e. Dunlop E3) are more susceptible to cupping than others.

If you want an excellent explanation of why cupping (and pretty much every other tire wear phenomenon) occurs, have a look at this page: Common Motorcycle Tire Wear Patterns

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budavari
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Re: gl1500 front tire

Postby budavari » Mon May 07, 2012 8:49 pm

Hey, dingdong, that is a really good reply. I hadn't thought of all of those issues.

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cbx4evr
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Re: gl1500 front tire

Postby cbx4evr » Mon May 07, 2012 10:24 pm

What Dunlop says about cupping.


How can I keep my tires from cupping?

You may not be able to entirely avoid cupping. Tire cupping or irregular wear is a somewhat common occurrence on all vehicles. On a four-wheel vehicle, you are advised to rotate your tires periodically to even out wear. Unfortunately, you do not have this luxury with a motorcycle because front and rear tires, unlike those on most four-wheel vehicles, are not interchangeable.
However, there are steps that can be taken to minimize cupping and uneven wear on a motorcycle: Maintain your motorcycle and particularly your front and suspension. Avoid hard braking whenever possible. Braking causes the tire to grab and wear in one direction. When braking is applied to the front tire, the load transfer over-flexes the tire and increases the tendency for cupping and uneven wear. Maintain your tire pressures. Under inflation and overloading of motorcycle tires are significant causes of cupping and uneven wear, particularly in association with hard braking and/or trailer use.
Once a tire begins to show signs of uneven wear, even following these steps may not improve the condition.
Tire companies can, and are, helping to minimize cupping and uneven wear but you, the rider, must do your part. Following the aforementioned guidelines will help avoid uneven wear.
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jazzrider
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Re: gl1500 front tire

Postby jazzrider » Tue May 08, 2012 10:38 pm

I have done a lot of reading on the issue,The manual calls for 33lbs of pressure, with the new tires a higher pressure is recommended up to 38-40 and the same increase in the back. Reports of using dynabeads will drastically reduce the cupping and increase the tire life with a much smoother ride.


You will get mixed opinions on this topic just have to do a lot of reading with trial and error.




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