I think about the only mistake that I'm done making is "inappropriate" speeding, I haven't gotten a ticket in at least 15 years.
The mistake I make most often is troubleshooting a bike that won't start, eliminate the battery early on, bang my head on the problem for a week or two, then replace the battery to fix it
The mistake I make most often is troubleshooting a bike that won't start, eliminate the battery early on, bang my head on the problem for a week or two, then replace the battery to fix it