+1 on issues with wireless computers, I've gone 85 mph at a stoplight and 0 mph while riding with a headlight on next to the computer.
My top speed is 45 mph (with a wired computer).
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Countries I've ridden in: US, Canada, Ireland, UK, Germany, Netherlands, France, China, Singapore, Malaysia
States I've ridden in: Illinois, Connecticut, Massachusetts, Pennsylvania, California, Nevada, Missouri, Colorado