Blimey, do you do an awful lot of miles?
Covered 2,500 miles since 2nd March and changed brake pads once and expect to change them again in a couple of months so yes, every 4 months is probably correct.
It's commuting in that ole London town place, lots of braking to avoid cars, buses, lorries other riders etc. and obviously for stopping at all those red lights 😉
Actually on my old commute of 15 miles (each way) I used to go through 94 sets of traffic lights (each way). I am now commuting 18 miles each way on a similar route but haven't been arsed to count them so far.
Slight thread hijack but can anyone beat that?