Dangerous Tire - Shinko 712 Tires

[txtriathlete]

Recently bought one of these for the front on my Shadow. The front tire has a deep center cut that grabs onto grooved highways, shaking the steering violently. I highly recommend you avoid these tires.

[h13man]

Never had a tire "shake  violently". I would look into wheel bearing, head bearing failure, or assembly issue when the tire was installed especially if this wasn't a issue before the tire replacement.

[txtriathlete]

The bike rides perfectly on other roads and with the old tire. It does the shaking when its trying to "grab" the raised concrete on the grooved pavement. Otherwise it's fine. It's the tire.

Never had a tire "shake  violently". I would look into wheel bearing, head bearing failure, or assembly issue when the tire was installed especially if this wasn't a issue before the tire replacement.

[Madmike]

The bike rides perfectly on other roads and with the old tire. It does the shaking when its trying to "grab" the raised concrete on the grooved pavement. Otherwise it's fine. It's the tire.

Never had a tire "shake  violently". I would look into wheel bearing, head bearing failure, or assembly issue when the tire was installed especially if this wasn't a issue before the tire replacement.

I would contact Shinko and talk to them, never know they may give you an alternative.

[DarkSideR]

I had a Shinko front tire delaminate on me. I'll never run a Shinko again.

[..]

Recently bought one of these for the front on my Shadow. The front tire has a deep center cut that grabs onto grooved highways, shaking the steering violently. I highly recommend you avoid these tires.

What year bike?

What size tire?

[txtriathlete]

Recently bought one of these for the front on my Shadow. The front tire has a deep center cut that grabs onto grooved highways, shaking the steering violently. I highly recommend you avoid these tires.

What year bike?

What size tire?

99 Honda Shadow Spirit 1100. 110/90-19

[txtriathlete]

The bike rides perfectly on other roads and with the old tire. It does the shaking when its trying to "grab" the raised concrete on the grooved pavement. Otherwise it's fine. It's the tire.

Never had a tire "shake  violently". I would look into wheel bearing, head bearing failure, or assembly issue when the tire was installed especially if this wasn't a issue before the tire replacement.

I would contact Shinko and talk to them, never know they may give you an alternative.

Ya, I may try that. I went back to J&P where I got it but they don't seem interested.

[Valkorado]

I decided what the heck gotta at least try one of them thar Stinkers and tossed an SE890 (? I think, Cobra like pattern) on the front of Ruby last year.  No complaints.  I do have a Cobra Chrome that I scored when Wally was giving them away for $77 free shipping waiting in the wings...

[Tfrank59]

Well Shinko is an inexpensive China brand. You're going to get what you pay for. My experience with shinkos it depends on the tire, on my other bike a Yamaha 1300 I run Shinko 777s and they're fine but on my Valk I had a Shinko Journey for a rear tire and I hated it because of the tread pattern. I won't buy another Shinko Journey... ever.

[JimC]

Shinko is not a brand made in China.

They started in Japan in 1946.  They sold in 1998 to Yokohama and continued to be designed in Japan and made in South Korea. Today they are still made in South Korea and distributed through six warehouses within the USA.

I run Shinko 777 whitewalls on my Valkyrie, and so far after about 3,000 miles, I can not find any issues that would keep me from using them. Time will tell.

Jim

[Tfrank59]

Shinko is not a brand made in China.

They started in Japan in 1946.  They sold in 1998 to Yokohama and continued to be designed in Japan and made in South Korea. Today they are still made in South Korea and distributed through six warehouses within the USA.

I run Shinko 777 whitewalls on my Valkyrie, and so far after about 3,000 miles, I can not find any issues that would keep me from using them. Time will tell.

Jim

I stand corrected on China.  When I looked up what fits a valk rear only the shinko Journey came up. Didn't know 777 fits a valk rear.   777s a good tire but for the rear i only got 8k to the wear bars on my royal star 1300. I'm sure it depends where and how one rides.

[txtriathlete]

I used Shinkos previously on other lighter bikes (old gold wings) bikes and was happy with them, which is why I bought this one. 

My issue is not with construction or durability, its the design of this particular model (and only the front BTW). It has a design flaw. The center groove (water sipe?) grabs the ridges in grooved concrete and follows them making the bike swerve around or shake the handlebars. We don't have metal bridges here but I bet it would do the same.

[F6Dave]

Years ago it was common for front tires to have parallel grooves running around the circumference of the tire.  My first few bikes had them.  Then grooved pavement started to appear, first in California as I remember, and complaints of the front tire 'grabbing' the pavement quickly followed.  The diagonal tread patterns on most modern tires have nearly eliminated the problem.  Car tires had a similar problem, and manufacturers actually changed the spacing of the grooves so that they wouldn't match up with the pavement grooves.

If I run into an unusually 'grabby' stretch of pavement, like some that has been roto-milled for resurfacing, I'll sometimes resort to an old technique that minimizes the effect:  the gradual weave.  I ride at a very slight angle to the grooves for a few hundred feet, then reverse the angle as needed to stay in my lane.

[Madmike]

Shinko is not a brand made in China.

They started in Japan in 1946.  They sold in 1998 to Yokohama and continued to be designed in Japan and made in South Korea. Today they are still made in South Korea and distributed through six warehouses within the USA.

I run Shinko 777 whitewalls on my Valkyrie, and so far after about 3,000 miles, I can not find any issues that would keep me from using them. Time will tell.

Jim

'
Minor detail .......  The way I understand it is that Shinko bought Yokohamas designs and molds from them and continued as Shinko....  "Established in 1946, the Shinko Group began as a manufacturer of bicycle tires and tubes in Osaka, Japan that today has become a burgeoning manufacture of rubber products.

In 1998 the Shinko Group purchased the motorcycle tire technology and molds from Yokohama Rubber Co., and began production of these products under the Shinko Tire brand. With manufacturing based in South Korea and design based in Japan, the company has seamlessly combined Japanese engineering and design principles with South Korean production and quality control standards. Today Shinko Tires produces approximately 200,000 motorcycle tires per month." 

[Tfrank59]

 well regardless of the country of manufacture IMO they're still a bargain brand, they ain't the best but they'll do the job. 

[The emperor has no clothes]

Shinko is not a brand made in China.

They started in Japan in 1946.  They sold in 1998 to Yokohama and continued to be designed in Japan and made in South Korea. Today they are still made in South Korea and distributed through six warehouses within the USA.

I run Shinko 777 whitewalls on my Valkyrie, and so far after about 3,000 miles, I can not find any issues that would keep me from using them. Time will tell.

Jim

Which front W/W are you using ? I only see a rear in the 160/70/17 that would fit. They are interesting tread design. Makes me think of musical notes. 

[JimC]

Shinko is not a brand made in China.

They started in Japan in 1946.  They sold in 1998 to Yokohama and continued to be designed in Japan and made in South Korea. Today they are still made in South Korea and distributed through six warehouses within the USA.

I run Shinko 777 whitewalls on my Valkyrie, and so far after about 3,000 miles, I can not find any issues that would keep me from using them. Time will tell.

Jim

Which front W/W are you using ? I only see a rear in the 160/70/17 that would fit. They are interesting tread design. Makes me think of musical notes. 

Shinko 777 in 140/80/17