Depending upon your driving style over 100,000 miles. Just have them
checked at your annual vehicle inspection. In some climates, rust is a
problem.

Bob Wilson

I have a 2005 Prius.  Can anyone tell me how many miles the front brake
shoes are likely to last before they need to be replaced, so that I can
avoid having to grind down the rotors?
Steve

I recently bought a 2002 with (now) 105K miles on the original brakes. The
front pads still look nearly new, because many of the miles were highway
miles. I would expect a car driven in town where congestion kept the speeds
low would fare worse, since the friction brakes are used at low speeds.

Dunno if the wheels on the current generation are as revealing as the ones
on the Classic, but on mine I can look right at the edge of the outer brake
pads from the outside.

Mike