Has any one used this tire?

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da_bull wrote:

FVM wrote:

Any tire that's out of balance will have pronounced cupping verses one that's perfectly balanced.

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...I was thinking low pressure, but never really dug into finding out why cupping happens.

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There's another member that explained this quite well... can't find it right now but I'llexplain itin "Laymans terms".

If you've rubbed your rubber soul shoes on the floor &it squeaked. Your shoes are gripping then releasing the surface.The smoother the surface the higher the squeak (shorter distance & contact), lower the tone the rougher (longer distance & contact).

On tires,the leading edge gripsthe contact surfaceand rubs while the rearcompresses towards the front & jumps. Think of it as the letter "W". Something has to give...the front edge rubs (or scrubs)while the rear edge jumps.The scrub wears & jump doesn't.

Tires do the same thing but much faster & with more weight.

Low pressure magnifies this problem because there's more rubber contact to the road, thus creating more heat,that heat softens the rubber allowing more rubber to come off. That's a vicious cycle & eats tires fast.

Now adda turn to a motorcycle tire & theirs compound twisting & releasing of this scrubbing.:gunhead:


Motorcycle tire MFG's have a lot to deal with verses car tires. :shock:

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On 5-21-09 I made this report on the GL1800riders forum:
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On the way home yesterday the front end felt odd on right turns. This is what I found when I pulled it into the garage:

There are five of these knots in series around about 1/4 of the radius. Each one is under the solid part of the tread as these two show. At first it just felt like bad cupping coming on. I don't know my mileage on them right now - will have to check my records for when I put them on. Probably about 7-8k. I'll leave the rear on for now and just replace the front with a 'stone that I bought on one of Hal's sales.

Yes, I check air pressure regularly and maintain at 38 psi.
No, I don't ride at what I would consider a "spirited pace" regularly. But on occasion I will.
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I changed the front tire out the next day, and just a few days later swapped the rear. The rear showed no signs of separation, but was already well-worn with only ~7000 miles. I won't bash Shinkos since this has been my only experience with them, but I won't ride on them, either.

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I have been running a set of Shinko's this summer on my 1500. The ride has been great. Handles like a dream. My only problem was that Saturday on my way home the rear seperated the belting. Will include a photo. The warranty was great though. I took the tire to JC Whitney Sunday and they gave me a new tire, no pro rate or anything. I figure it was just a bad tire. Installed the new one and will continue on. I have had warnings that my 1500 was not designed for a radial. From what I found in my studies on that subjuct it was the bead mount difference. Well mine did not come off the bead. Seperated at the tread. I do know that Shinko will be releaseing a new tire for the Goldwings next month. From what I understand it is a tread pattern change. Like I said I had a problem, but I know of people that have had some problem with all brands of bike tires. I will continue to ride on Shinko tires. And when my other bike is ready for a new set I will put Shinko on it.