Closer to 20k miles a year.How the **** do you spend $4k a year on maintenance? Do you put 50k miles a year on the bike? Tires, oil, filters, chains, and other fluids don't cost that much! Shed time is free!
- Valve job $1800 (every 12k miles so about 1.5 jobs a year)
- Tires every every 8-12k miles not counting tires destroyed by road debris. About $500 a set with install
- oil changes $120 every 4-5k miles
- chain/sprockets every 2nd or 3rd oil change (about $200)
- brake pads
- coolant service
Their are people that buy motorcycles to ride and not just to decorate their garage.
To my point above, the HD's valves are self adjusting, reducing maintenance cost by just over half.