I had an interesting chat online with a Shinko tire representative - Here is the text from that chat
His responses are in RED
SE890 JOURNEY TOURING
STREET / CRUISER TIRE
Designed for larger touring bikes and cruisers, The SE890 Journey touring radial features a versatile all-weather tread pattern.
• Econmically priced without sacrificing quality
• Excellent ride and load carrying capabilities
• Aramid belted radial construction
• Tread compound designed for optimal grip and good mileage
• Available in sizes for the Honda Valkyrie, and Honda GL1500 and GL1800 Gold Wing models
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According to your website (excerpted above) these tires are approved for use on a GL1500 Goldwing motorcycle. The GL1500 normally uses BIAS ply tires? However This tire is a Radial ? Are you really advertisiing this tire for the GL1500 or is this a mistake. Please advise as I am considering this for my 1996 GL1500 Aspencade
We say we have fitment for the GL1500. That means we manufacture the size of tire that originally came on that machine. We understand that the 15 came with bias ply and we leave the decision up to the customer whether or not to change to a radial. What I can say is that many people have used these on their GL1500’s and absolutely loved them! Even though the machine was designed for bias ply tires it doesn’t mean you CAN’T put radials on. A radial tire is more performance minded and is more flexible than a bias. So if your machine was designed with bias ply you just have to make modifications to accept the radial such as stiffening up the suspension. I hope this info helps and if you’d like please feel free to give me a call and I can help further explain this. .
Currently my GL1500 has stiffer than OEM suspension. As you may know the Goldwing GL1500 had softer suspension as OEM designed to make them absorbs bumps more
MY Wing has Progressive Front Springs and the Progressive 450 IAS shock on the rear combined with the air assisted OEM shock I can run it stone stiff or plush as I see fit.
So if I had these Journey SE890 tires I would stiffen the suspension to match the softness of the radial tires...?
What is the load rating of the SE890's - I missed that on the website.
Awesome! Those Progressive shocks make all the difference in the world! Yes, stiffen the suspension slightly to accommodate the radials.
Load ratings are as follows: Front load index 63 or 600lbs and rear load index 81 or 1019lbs, so combined weight of 1619 lbs
This has been an enlightening conversation and exchange thus far and I appreciate your time.
Do you have any field reports on tire longevity on the Goldwing? Approx expected miles before replacement?
I know conditions change bike to bike and all, however when I could get the Michelin Pilot GTs (which were the best tire I ever used on my GL1500) I averaged 16,500 miles per set over 4 sets I used...
My buddy & I have been trying different tires since them to find an acceptable mix of performance and longevity.
Bridgestones handle well, but burn up in under 10K
Avon Venoms last , but are too hard
Dunlop EIIIs last but slip a bit and are noisy.
I have used Shinko on a GS650 I restored this past year and liked them (Tourmaster 230's). But I sold the bike before I put any miles on them (about 300 total) .
Your thoughts please ?
Yes mileage is a tough one. What I can say is that on average I hear reports of anywhere from 8-12k. I’ve also heard of people wearing them out in 6 and cases that have lasted as long as 22,000. Most important thing about tire longevity is tire pressure. Shinko tires are designed to be run at no less than 4-5lbs below max air pressure and if run lower than that they can wear twice as fast as they should.
Bought that 890 Journey Touring front tire, the 18" one, it was indeed a 63H and a 600lb. load rating, less than what I was led to believe, not as much as using a BT45 rear tire, I must have read something wrong on the Shinko website, or they are wrong.
But anyway it mounts decently, helps to heat it up first. Made sure inside of rim was spotless clean. Put circle at the stem. Its a new chrome 90 degree stem, I think it was lighter than the OE rubber, new one has two lock nuts on inside, I used red locktight on the threads. Did require a small amount of weight, may not have needed that if OE stem.
Inflated, set the bead, deflated and then filled tire with 2 ounces of a Dynabead substitute I happen to have lying around my shop. Basically a special sand blasting media thats either silicone carbide or zirconium carbide. Did some research and found out thats basically what balancing beads are, I have hundreds of pounds of this stuff left over from a special project over 10 years ago.
Had no problems getting beads through the angled stem, just angle the stem at a 45 degree angle. It will be maybe another month before the weather clears and I can ride bike though.