Join Date: Mar 2007
Location: Fort Sask , Alberta, Canada
The 80 or 90 designation is the aspect ratio of the tire. This is described as a percentage of the tire width.
80% of 130 = 104
90% of 130 = 117
So the difference is 13 mm or just over 1/2" in the height of the tire, measured from the bead to the top of the tread.
My Kaw Barn - 2004 KLR, 2006 Concours (sold), 1997 Bayou 400.
"It's a friggen motorcycle, it's not supposed to be comfortable, quiet or safe. The wind noise is supposed to hurt your ears, the seat should be hard and riding it should make you shit your pants every now and then. "
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