After about 3000 km of commuting on my current bike. I've gone through a set of front and rear pads (disk brakes), this happend at about 2200 km. I changed the cables when I did my pads. I've also rotated my rear and front tires as the rear has worn pretty thin. Did this at about 2000 km, I think new tires will be in order in about a year or another 1000 km. Everything else seems ok for now.