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R1100 RS tire question

If you look at the difference in the different tire sizes between the stock 18" and replacement 17" it can be measured in revs per mile.
the stock 160/60-18 = 789, replacements 160/70-17=781 and the 150/70-17= 798. The height variances are small, +.2" on the taller tire (160/70-17), -.3" on the smaller tire ( 150/70-17)
 
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