Just curious, really! I'm about to have the fronts on my Honda replaced and they'll have done about 23k of service. Doesn't seem bad for a fairly heavy FWD saloon with a driver who sometimes likes to corner enthusiastically 
Rears weren't new when I bought the car so I don't know how much use they'd had when I replaced them

Rears weren't new when I bought the car so I don't know how much use they'd had when I replaced them