Shinko tires and poor handling


Information and questions on GL1500 Goldwings (1988-2000)
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jamie f
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Motorcycle: 1986 GL1200 Aspencade, 1982 GS 850L,,wife's bike, 1981 GS1100E,sold,,Latest addition 1994 GL 1500 Aspencade.

Shinko tires and poor handling

Postby jamie f » Sun Jun 05, 2016 7:46 am



Good morning everyone.This spring I installed Shinko Tour Master tires on my 1500.They have performed pretty good for 2800 miles,but started to feather/ chop almost immediately.Makes for a noisey ride.99 % of the time its 2 up riding.Yesterday afternoon we were on a ride and as we came out of a corner,the rear end felt soft and loose.I stopped and checked tire pressure,40 psi front and rear.Rear air ride was at 50 psi.We took off again and it felt like we were riding on a flat rear tire.This happened like turning a switch on/off.Handled fine,then very loose feeling.
We took it home,very slowly,and proceeded to check all suspension,swing arm,shocks,triple tree,fork brace,etc.All check out ok.Spin the rear tire,seems ok.Front tire seems ok also.Is it possible the tire separated internally and is causing this 'flat tire's feeling?Has anyone else had this problem?Any advice or comments are appreciated.Thank you.



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Fiberthree
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Motorcycle: Black 1999 GL1500SE

Re: Shinko tires and poor handling

Postby Fiberthree » Sun Jun 05, 2016 11:46 am

Sounds like you could be the person we need to test out the new Dunlop E4's for the forum!

With the pressure holding steady it sounds possible that the sidewall belts have become de-laminated internally causing the tire to flex more in that region. Maybe not. In any case, it should be replaced as defective. I wonder if the maunfacturer would be willing to disect it and determine what went wrong and/or compensate you.
Ed

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jamie f
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Motorcycle: 1986 GL1200 Aspencade, 1982 GS 850L,,wife's bike, 1981 GS1100E,sold,,Latest addition 1994 GL 1500 Aspencade.

Re: Shinko tires and poor handling

Postby jamie f » Mon Jun 06, 2016 6:39 am

I've decided to go with Avon Cobra AV 71&72,matching set of tires.They have a higher weight rating than what the bike calls for,and since Im almost always riding 2 up,seems like a good idea.I all keep you all posted on the handling and wear of the Cobras.

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minimac
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Motorcycle: 1993 GL1500 Aspencade
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Re: Shinko tires and poor handling

Postby minimac » Mon Jun 06, 2016 6:59 am

I tried a rear Shinko once, because it was, I'll admit it, cheap. I ended up taking it off after less than 3K miles. Never again...

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joeincalif
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Location: San Jacinto, Calif
Motorcycle: 1997 Gold Wing SE

Re: Shinko tires and poor handling

Postby joeincalif » Mon Jun 06, 2016 8:45 am

I almost bought a set awhile back but because of the negative reviews I passed on them.
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Bluewaterhooker0
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Location: Tampa, Fl
Motorcycle: 1997 Goldwing GL 1500 SE

Re: Shinko tires and poor handling

Postby Bluewaterhooker0 » Mon Jun 06, 2016 5:04 pm

Just based on the brand name "Shinko", I always assumed they were cheap Chinese crap, and wondered, other than price, why anyone would buy them. But I heard recently that Shinko is the old Yokohama brand, not that I was aware of Yokohama cornering the bike tire market. But, I would have expected better from Yokahama or their successor.

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jamie f
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Motorcycle: 1986 GL1200 Aspencade, 1982 GS 850L,,wife's bike, 1981 GS1100E,sold,,Latest addition 1994 GL 1500 Aspencade.

Re: Shinko tires and poor handling

Postby jamie f » Mon Jun 06, 2016 8:34 pm

Well, I can honestly say that I have bought 2 sets of Shinko tires,my first and my last!That was not a good feeling coming out of a corner at 50 mph and having the bike feel like I hit a grease slick.Scared the %$#@ out of me and my wife.Thank god I'm an experienced rider and didn't panic.Just happy it didn't turn out worse.

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Fiberthree
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Re: Shinko tires and poor handling

Postby Fiberthree » Mon Jun 06, 2016 9:35 pm

What is the load rating on the Avons?
The Dunlop E3s run 992lbs @42psi max on the rear and 600lbs @41psi max on the front. I haven't checked the ratings for the E4s yet, but they can't be too far from that.
Ed

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robb
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Motorcycle: 1989 Honda GL1500 Aspencade

Re: Shinko tires and poor handling

Postby robb » Tue Jun 07, 2016 8:23 am

Shinko is an inexpensive general duty tire. A riding partner has a 75 Goldwing that we stripped down converting to a bobber, now with more than 10k on Shinko and happy. Couple other 1200's appear to be happy but 1500 riders not happy. Even on front of an 1800 was short lived. My Yamaha was 750 pounds and they went 13k before showing wear, always at 42 psi. Looks to me to be a weight issue since smaller bikes can successfully run.
As time consuming as it is for 1500 rear tire replacement a general duty tire will not do. Shinko weight rating 600 front and 853 rear whereas Elite3 rear is 992. Elite 4 has same rating as E3.
My 94 GL1500 got over 15k running a set of E3 radials for the GL1800 without issue.

chads920
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Re: Shinko tires and poor handling

Postby chads920 » Tue Jun 07, 2016 9:06 am

I experienced problems with Avon Viper tires, the front tire side wall cracked after an over winter storage. I had it replaced after discussing the situation with their North American rep (who by the way was very helpful advocation for me with the US supplier). The replacement tire (front) also split and in exasperation I replaced it with a Dunlop tire ( on 89 Venture Royale). The rear tire never showed any signs of splitting and is still serviceable. I mounted a set of Shinkos on my Venture RSV but as I have since sold that bike I have no idea of the current condition. They were attractive mainly because of the $$ value. I have a Trike now, as the replacement for the RSV and I mounted a Michelin rear tire on the front, pricey but excellent handling. Speaking of trike fnt tires I have been attracted to the idea of mounting a side car tire on the front but have no background info on that.
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themainviking
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Re: Shinko tires and poor handling

Postby themainviking » Wed Jun 08, 2016 6:26 am

jamie f wrote:I've decided to go with Avon Cobra AV 71&72,matching set of tires.They have a higher weight rating than what the bike calls for,and since Im almost always riding 2 up,seems like a good idea.I all keep you all posted on the handling and wear of the Cobras.


I had Avon Cobra tires in the radial version for about 3500 miles before I got the same on the rear that you just had on the shinko. I could see it though. The belts separated inside the tire and one side became higher than the other. Really weird riding sensation, so I limped home. Had to fight like heck with Avon to get them to reimburse the tire. They kept saying it looked like uneven wear, till I sent the tire back to them at my cost, which they DID NOT reimburse. They have since reformulated the rears to add weight capacity by about a hundred more pounds. I wish you luck with them. For riding, they were about the best handling tires I ever had on the wing. Otherwise, when I can find them, on other bikes, I like Michelin.
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jamie f
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Location: lodi wi
Motorcycle: 1986 GL1200 Aspencade, 1982 GS 850L,,wife's bike, 1981 GS1100E,sold,,Latest addition 1994 GL 1500 Aspencade.

Re: Shinko tires and poor handling

Postby jamie f » Thu Jun 09, 2016 7:35 pm

The Avon's I purchased are bias ply.I put them on today,took it for a test spin,boy what a difference,bike handles beautiful.The way it holds a line in a corner is unbelievable.Went through some "s" curves like it was on a rail.Very pleased with performance.No more cheap tires for me,lesson learned.Im not even going to bother contacting Shinko,mark it up as a loss and move on.Thanks everybody for your input.

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MikeB
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Motorcycle: 1998 - GL1500 Aspencade.
2003 - GL1800A

Re: Shinko tires and poor handling

Postby MikeB » Thu Jun 09, 2016 10:39 pm

jamie f wrote:The Avon's I purchased are bias ply.I put them on today,took it for a test spin,boy what a difference,bike handles beautiful.The way it holds a line in a corner is unbelievable.Went through some "s" curves like it was on a rail.Very pleased with performance.

I've been running Avon bias ply on my GL1500 and Avon radial on my GL1800 for several years. I've had the same satisfaction through out ownership that you have expressed.
MikeB
Tacoma, WA, USA

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hugger-4641
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Motorcycle: 1994 GL1500 Aspencade, 1982 CM 200 Twinstar, 1984 VT500 Ascot

Re: Shinko tires and poor handling

Postby hugger-4641 » Fri Jun 10, 2016 7:09 pm

I am also in the camp that "will never buy shinko's again". I put a set on my bike and had to pull them off due to severe cupping in the front and slipped belts in the rear. I don't think I had 8k miles when I had to pull them off. When I say "had to pull them off", I mean that the bike was practically un rideable. You get what you pay for, the $200 I may have saved is out the window when you don't even get half the expected life out of the tire.

trak
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Re: Shinko tires and poor handling

Postby trak » Mon Jun 13, 2016 6:15 am

hmm,, shinko's seemed to be working alright on my 1100,,, I have a brand new michelan put back for the front of my 1500,, real hd tire,,, got it off someone who didn't like it on a trike.




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