Hmm, I have never heard of reading slow, usually their off the otherway.
Most of what other riders are saying is, 60 indicated is 54 actual, or, off by 1-2%. I read 80 indicated = 72 actual. My son has a GSXR 600, his is within 1 mph of mine. Verified by GPS and Wisconsin State Patrol Radar, (71 in a 55, 79 indicated) I have to mentally adjust for it.
I'm to cheap to buy spedo correctors available out there.
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