GL1200 darkside question


Information and questions on GL1200 Goldwings (1984-1987)
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Yosemite Sam
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Joined: Tue Apr 03, 2012 4:23 pm
Location: Painesville, Ohio
Motorcycle: 1985 GL1200 Interstate

GL1200 darkside question

Post by Yosemite Sam » Sat Jun 02, 2012 7:58 am



Gotta a question, hoping I can get some good advice here...

I'm thinking of going darkside on my 85 GL1200 Interstate, but searching the internet and this forum there's not a whole lot of specific info. Some info I read says that some had to grind their rims a bit to get a good seal, and some say they didn't but I wasn't clear on what brand and size tire they used.

My reading tells me that the 15" rim on the GL1200 is the trickiest to put a car tire on, but like I said the ones who did it successflully, I wasn't clear on the specific tire.

So, as mentioned earlier, I'm hoping to get some up to date and specific info....if you put car tires on your GL1200 (with 15" rim), what tire and size is it?

Thanks for your help!!!!


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Mooseman
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1985 GL1200A (SOLD) 85K
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Re: GL1200 darkside question

Post by Mooseman » Sat Jun 02, 2012 11:34 am

Here you go. Check out this site. Gives brands and sizes....
http://mcdarksiders.forumotion.com/t439 ... g-darkside
Enjoy the ride. They are all good, just some better than others.
Mooseman

Akron331pres
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Motorcycle: 1800 gl1800

Re: GL1200 darkside question

Post by Akron331pres » Sun Jun 03, 2012 11:07 pm

Please read the article in the JULY 2012 Rider magazine. You may change your mind about putting a car tire on a bike.

Ratslayer
Posts: 3
Joined: Wed Jan 09, 2013 4:03 pm
Location: Carrollton, TX
Motorcycle: 1987 GL 1200I
2005 GL 1800A

Re: GL1200 darkside question

Post by Ratslayer » Wed Jan 09, 2013 4:14 pm

I am trying to find an appropriate CT for my 1200 as well. I have been running a Michelin PA 3 ZP 195/55 R16 @ 32 psi on my 1800 and have about 17,000 miles on just this year. Lots of research went into choosing that one. I hared comments about the Kumos having a shoulder bump to them as you leaned. Not so with the PA 3, you can't tell it isn't a MC tire. My service guy rode it right after I put it on and totally skeptical was shocked at how well it did. He fully expected to find that shoulder bump but nope. He was impressed. My front is a Bridgestone Battleax BT 45 130/70 R18 MC @ 38. The great news is that they both still look brand new. My E3's wore out in 6,000 and cupped so bad I thought I was riding on mud grips when I went into a corner. IT'S ALL GONE!! I know the 1200 has a narrower frame area and enen the stock E3's were a ****-bear to get on the rear.

Just my 2 cents

gervais
Posts: 216
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Location: riviere-bleue,quebec,canda
Motorcycle: GoldWing 1984 GL1200A Aspencade

Re: GL1200 darkside question

Post by gervais » Thu Mar 15, 2018 9:03 am

well
i am not sure one bit that a vehicule tire can be installed on a motorcycle,,
i would like to see pictures after the install,
how the tire fits on the shoulder of the rim???

any pictures!

thanks
gervais
i have a 1984 Aspencade

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Rednaxs60
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Joined: Wed Nov 18, 2015 12:44 pm
Location: Victoria, British Columbia, Canada
Motorcycle: 1985 GL1200 LTD (X2), 2008 GL1800 (sold)

Re: GL1200 darkside question

Post by Rednaxs60 » Thu Mar 15, 2018 7:10 pm

Had a CT on my '08 1800 that I just sold, put some 8000 Km on it and no noticeable wear and the ride quality was good. Lots of GWs with a CT installed, other makes as well. There is a difference but once you get use to this, you will never notice it. I have HD friends who followed me for two years and tried to find something wrong but could not. A fellow here on the island who does the IBA rides uses a CT when on these rides, but changes back to an MT when in town, easier to not explain the rationale for having a CT installed.

Have a spare rear rim for my '85 LTD now and intend to install a CT on it. Be great for touring.

Worst case is you try the CT and don't like it, go back to an MT. I hearken this issue to the same as pulling a trailer, not recommended by any OEM, go figure - but it is done.

Cheers
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

gervais
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Motorcycle: GoldWing 1984 GL1200A Aspencade

Re: GL1200 darkside question

Post by gervais » Thu Mar 15, 2018 8:09 pm

well
i checked for the Nexen SB802 165/80r15 and the Khumo Power Star 758 : i checked their prices via Internet and in comparaison Dunlop D404 G would be less $ for me but maybe tomorrow i will make 2-3 phone calls if i can find it here.

i love the Khumo design and the nexen have more grip in bad asphalt as we have here.

i need 2 tires for my 1984,

gef in a rural zone

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Rednaxs60
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Re: GL1200 darkside question

Post by Rednaxs60 » Thu Mar 15, 2018 8:33 pm

Looked at the profiles of the two tires. Like the Nexen SB802 best.
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

gervais
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Re: GL1200 darkside question

Post by gervais » Thu Mar 15, 2018 10:28 pm

well
they are sure rare around these tires,

i maybe forced to buy Shinko finally

Gef

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Rednaxs60
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Re: GL1200 darkside question

Post by Rednaxs60 » Thu Mar 15, 2018 10:42 pm

I have Michelin Commander II on my '85 LTD here in Victoria, got them from Fortnine. Have 23K Kms on them and just around 50% gone. Have kept these at 40 PSI. Will get at least 25K Kms and more.

Have ordered Shinko Tourmaster tires for the bike in Ontario. No sense in tempting fate when I come across Canada in June. Also use Ride On Tire Sealant and Balancing formula instead of weights. Have also tried Counter Act beads but prefer the Ride On formula. I think these new balancing technologies are better for the tires because of the continual balancing to compensate for tire wear.

If the Shinko tires work well, will put them on the bike here in Victoria.

Cheers
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

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Andy Cote
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Motorcycle: 2015 Goldwing, basic black
2000 Valkyrie Interstate

Re: GL1200 darkside question

Post by Andy Cote » Fri Mar 16, 2018 6:15 am

While I never got to the point of darkside on my 1200 and can not offer real results as you requested, I did some research as you have. The difference in bead diameter on the 15" CT vs the 15" MT is only a few millimeters but has caused some folks trouble getting the bead to set. There are a few stories about using way too much air pressure and subsequent wheel failure during mounting. NOT GOOD!

While some have talked about machining the bead area others have been fine doing nothing or just polishing the bead area with Scotch Brite, using plenty of tire mount lubricant and leaving the mounted wheel/tire in the direct sun for a while at a slightly higher seating pressure.

Another solution is to change to a 16" wheel. There are web instructions on converting to the GL1500 final drive and wheel. The final drive ratio on the 1500 in combination with an Austone Taxi tire will reduce your RPM from stock so a wee bit more throttle may be necessary on start.
DARKSIDE #1500
2018 Goldwing, basic black
2000 Valkyrie Interstate, blue/silver

Previously: GL1500 Goldwing, GL1500 Valkyrie Standard, GL1200 standard, GL1200 Interstate, many other Hondas

Ham Extra Class, AC1R

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brianinpa
Posts: 170
Joined: Thu Mar 25, 2010 7:13 pm
Location: Lebanon, PA
Motorcycle: 1984 GL1200 Standard
1987 GL1200 Interstate

Re: GL1200 darkside question

Post by brianinpa » Fri Mar 16, 2018 6:29 am

I have a Classic 165/80R-15 on the rear of my 87 Interstate. Before that, it was on the rear of my 81 1100 and before that, it was on the rear of my 84 Standard. I think I paid somewhere near $60 for the tire. All totaled, I have just over 11,000 miles on the tire right now and I will probably get at least another 11,000 miles out of it.

Yes, I had to mill the rim to get it to fit... NO you do not need to do that. You either need to mill the rim or use about 80 to 90 psi of air to get the bead to seat.
This is a stock 1200 Rim:

Stock 1200 Rim
Stock 1200 Rim

This is what I did to it:

Milled Rim
Milled Rim

This is what it looks like inflated:

Inflated Stopped
Inflated Stopped

The one and only downfall to taking a 1200 to the Darkside... the selection of tires available in the 165/80R-15 size, but that's my opinion and as these threads always show, everyone has an opinion on the subject of the Darkside.
Brian

If you aren't having fun doing it, find something else to do.

gervais
Posts: 216
Joined: Tue Oct 24, 2017 6:49 am
Location: riviere-bleue,quebec,canda
Motorcycle: GoldWing 1984 GL1200A Aspencade

Re: GL1200 darkside question

Post by gervais » Fri Mar 16, 2018 6:53 am

well
i am not sure i would gring my wheel here,it is to touchey job to do ,yes a good application of "tire grease" will do the job.

yes there are not much a selection of tires of this size:
Yokohama Avid Touring-S
Federal SS657 165/80 TR-15 ,,,,,,,,i never saw this TR classifcation before ???

i will no go at changing my rear wheel also,there are no parts around here for me doing it anyway.

thanks a lot for your pictures also,i continue my search for a tire around here in my village but man they are rare .

Gervais.

gervais
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Re: GL1200 darkside question

Post by gervais » Fri Mar 16, 2018 9:31 pm

Ernest,
how much would you pay in BC for a Nexen SB802 or a Khumo Power Star 758??
i am curious to see the difference with me here,

i have found also the
Yokohama Avid Touring -S
Federal SS657 ,165/80TR15 and i never heard of TR15 tires???

i am seriously thinking about switching at the Nexen at the rear and a new Dunlop 404 in the front

Hi Andy Cote from Maine,,i am near Fort Kent,Maine

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Andy Cote
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Re: GL1200 darkside question

Post by Andy Cote » Sat Mar 17, 2018 5:15 am

gervais wrote:
Fri Mar 16, 2018 9:31 pm


Hi Andy Cote from Maine,,i am near Fort Kent,Maine
Fort Kent. Only a day away from me! Just kidding.

I do have a GL1500 rear end, swing arm, tire and wheel setup for sale if you decide to change to a 16" setup.
DARKSIDE #1500
2018 Goldwing, basic black
2000 Valkyrie Interstate, blue/silver

Previously: GL1500 Goldwing, GL1500 Valkyrie Standard, GL1200 standard, GL1200 Interstate, many other Hondas

Ham Extra Class, AC1R

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Ohara
Posts: 57
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Location: Ontario Canada
Motorcycle: 1986 Interstate
1986 Aspencade

Re: GL1200 darkside question

Post by Ohara » Sat Mar 17, 2018 7:36 am

I see that Wall Mart.com has the Nixen 165 80R 15 SB802 tire on for $60.00.You can order one on line and pick it up at your closest Wall Mart. You will have to pick it up in the U.S. If you are close to the U.S. border this may be your least expensive route to the dark side... :twisted:

gervais
Posts: 216
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Motorcycle: GoldWing 1984 GL1200A Aspencade

Re: GL1200 darkside question

Post by gervais » Sat Mar 17, 2018 2:37 pm

well
i am trying to find someone here near my location,in Northern Maine

i am living near Fort Kent but i dont have a passport yet to cross that border,,

gervais

gervais
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Re: GL1200 darkside question

Post by gervais » Wed Mar 28, 2018 12:12 pm

Andy Cote wrote:
Sat Mar 17, 2018 5:15 am
gervais wrote:
Fri Mar 16, 2018 9:31 pm


Hi Andy Cote from Maine,,i am near Fort Kent,Maine
Fort Kent. Only a day away from me! Just kidding.

I do have a GL1500 rear end, swing arm, tire and wheel setup for sale if you decide to change to a 16" setup.

well Andy
i will wait later this spring,
if someone cross the border here and can carry me one,

here at wall mart they cannot order one from the states,,,,,,what a stupidity!!!!!

gervais

blackbird
Posts: 63
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1970 Trail 90
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1983 GL1100A
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Re: GL1200 darkside question

Post by blackbird » Tue Apr 03, 2018 10:34 am

The question I have had for sometime regarding car tires on bikes, is "What happens in a major accident and the insurance companies decide that YOU have put a non-standard tire on a motorcycle"? I'm not sure this has been tested in court yet, but I could see the Insurance industry balking at paying your bills, or covering any claims for you or against you.

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Rednaxs60
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Re: GL1200 darkside question

Post by Rednaxs60 » Tue Apr 03, 2018 10:55 am

Always an issue. Same could be asked about having an accident while towing a trailer - owner's manuals do not recommend trailer use, and as such all trailer towing parts/items are aftermarket. The forums do not get as animated when asked about motorcycle trailer recommendations.

I have not read where a CT is not recommended in the owner's manual, but the OEMs do mention that use of tires other than those listed in the owner's manual may adversely affect handling. The owner's manual for my '85 LTD only lists Dunlop tires.

What about exceeding the GVW of the bike? See this all the time considering that the leeway between the bike weight and the GVW is only about 400 or so pounds. For my '85 LTD this is about 385 pounds. Motorcycle tire rating for each bike is based on this GVW rating. A CT install cannot change this GVW rating.

I have read of people south of the border getting a letter from their insurance broker regarding this issue.

Cheers
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

blackbird
Posts: 63
Joined: Sat Apr 24, 2010 8:24 am
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1968 Trail 90
1970 Trail 90
1995 Pacific Coast
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Re: GL1200 darkside question

Post by blackbird » Wed Apr 04, 2018 7:09 am

Excellent points, and considerations for all of us.



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