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Know if 120/70-17Rear fits 1980 GS1000GLT?

  • Thread starter Thread starter Declan_Berkeley
  • Start date Start date
I thought the L shafties all had 16 inch rear wheels.

The proper tire size would be 130/90-16 (or 130/90-17 if it really is somehow a 17 inch rear). In the old-style inch sizes still used on some Dunlops, that would be MT90-16. (You didn't ask, but the front would be a 100/90-19, AKA MM90-19)

The 120/70-17 tire is all wrong for your rim. In fact, it sounds like a radial front tire size, so I don't know how much more wrong it could be.

Proper tire sizes are critical on bikes, far more so than on cars or trucks. The wrong tire size and/or aspect ratio will goof up the profile of the tire and cause handling problems on a bike.
 
That 70's series is probably a radial tire DON'T mix types, probably requires a wider rim
 
I thought the L shafties all had 16 inch rear wheels.

The proper tire size would be 130/90-16 (or 130/90-17 if it really is somehow a 17 inch rear). In the old-style inch sizes still used on some Dunlops, that would be MT90-16. (You didn't ask, but the front would be a 100/90-19, AKA MM90-19)

The 120/70-17 tire is all wrong for your rim. In fact, it sounds like a radial front tire size, so I don't know how much more wrong it could be.

Proper tire sizes are critical on bikes, far more so than on cars or trucks. The wrong tire size and/or aspect ratio will goof up the profile of the tire and cause handling problems on a bike.

bwringer, the 1980 "L" big shafties had 17-in rear wheels. Later ones had 16's.

I agree that this rider should get 130/90-17 rear tires only.
 
bwringer, the 1980 "L" big shafties had 17-in rear wheels. Later ones had 16's.

I agree that this rider should get 130/90-17 rear tires only.

I learn something every day, whether I want to or not! \\:D/
 
What size is the rear wheel? I went with a 120/90-17 rear on my 550T because the wheel is only 2.15" wide.
 
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