I must be another of those extra-lucky magic tire people.
The OEM Michelins on my Odyssey lasted 60k.
The replacement FuelMax's are now at 33k and maybe halfway worn.
My Civic has Michelin Destiny's at 41k and still legal but getting low.
Tires are really a non-issue when talking about lifetime 4-wheel vehicle costs. Back on the subject, how about a car getting 74 mpg? Sure, a bike would use less fuel, but there's not a lot there to conserve at this point.