160 tires on gl1100: compatible parts for conversion


Information and questions on GL1000 Goldwings (1975-1979)
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morancharles
Posts: 3
Joined: Mon Jun 27, 2016 10:16 am
Location: Storrs, CT, US
Motorcycle: 1983 GL1100 Aspencade

160 tires on gl1100: compatible parts for conversion

Postby morancharles » Thu Jul 21, 2016 5:51 pm



Hey everyone, I'm new to the site and new to motorcycles, just bought a 1983 GL1100 and would like to beef up the rear tire.

The bike currently has 140s on the rear, and I'd like to go 160, MAYBE 180. I know I'll have to upgrade the swing arm and Final Drive and was thinking maybe I could snag one off of a GL1500 or even 1800, but I have no idea what the compatibility would look like. Has anyone been down this route, and maybe could point me in the right direction?

Thanks
Charles



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ekvh
Posts: 140
Joined: Thu Apr 29, 2010 9:52 am
Location: Grand Forks, ND
Motorcycle: 1977 gl1000

Re: 160 tires on gl1100: compatible parts for conversion

Postby ekvh » Thu Jul 21, 2016 8:03 pm

Take a good look at the upper frame tubes. I gave a 160 on a 1500 rim, a 1200 swingarm and a 1000 frame. It will hit the frame on big bumps without modification. I had to grind off the inner fender mounts on the left side and it clears by very little. I think you'll need to modify the brake caliper stay- long arm from caliper to front of swingarm.

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ekvh
Posts: 140
Joined: Thu Apr 29, 2010 9:52 am
Location: Grand Forks, ND
Motorcycle: 1977 gl1000

Re: 160 tires on gl1100: compatible parts for conversion

Postby ekvh » Thu Jul 21, 2016 8:05 pm

I'm pretty sure no tire manufacturers recommend a 160 on a 3" rim.

SnoBrdr
Posts: 325
Joined: Fri Mar 07, 2014 9:01 am
Location: Providence, Rhode Island
Motorcycle: 1978 GL 1000

129K Original Owner

Re: 160 tires on gl1100: compatible parts for conversion

Postby SnoBrdr » Fri Jul 22, 2016 4:08 pm

morancharles wrote:Hey everyone, I'm new to the site and new to motorcycles, just bought a 1983 GL1100 and would like to beef up the rear tire.

The bike currently has 140s on the rear, and I'd like to go 160, MAYBE 180. I know I'll have to upgrade the swing arm and Final Drive and was thinking maybe I could snag one off of a GL1500 or even 1800, but I have no idea what the compatibility would look like. Has anyone been down this route, and maybe could point me in the right direction?

Thanks
Charles


You could go to the "darkside" and go with a car tire on the rear.

Old Fogey
Posts: 724
Joined: Fri Oct 30, 2009 2:09 am
Location: Glasgow Scotland
Motorcycle: 1976 GL1000
1979 GL1000
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Re: 160 tires on gl1100: compatible parts for conversion

Postby Old Fogey » Sun Jul 24, 2016 9:09 pm

I'm curious as to why someone new to motorcycles would immediately think that the rear tyre has to be huge. Massive numbers of these bikes have done huge mileages in perfect safely without doing that. Apart from that, a big rear tyre and a skinny front will give you more handling problems than you could want.
It might be an idea to find out just what these bikes are capable of first, before tearing it apart.


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