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Discussion Starter #1
I want to get some whitewall tires for my bike, and stock specs are :

Front - 100/90
Rear - 150/90

Does anyone know the biggest size that I can go up to without starting modifications?

Thanks!
 

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Discussion Starter #3
Sorry!

Front is 100/90-19
Rear is 150/90-15

I am more concerned about the rear rubbing the swing arm, but if you could tell me the max sizes the rims will allow I can then compare measurements! Thanks!
 

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You can use the link below to compare the differences from one size tire to another and how it will affect your speedo. Many go to a taller tire to help correct the error in the speedo, they most all read you are going faster than you are. Use it to see also how much wider the tire will be. Divide the difference in width in 1/2, and you will need at least that much clearance at the closet point. Tried putting a 140/90/16 on a friends Sportster that had a 130/90/16 and it rubbed on the belt. I have a 205/60/16 CT on my Voyager that came with a 170/70/16.
http://www.tacomaworld.com/forum/tirecalc.php?tires=180-65r16-195-55r16
 
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