A year of red-route braking, properly measured
London Road through Norbury is a red route and the high street at the same time, so there are bus stops, signals, loading and queues the whole way, with Thornton Heath Pond and the Lombard roundabout waiting at the southern end. The braking that goes with that is gentle and endless, and it wears pads in a flat, even way that gives almost no warning until the material runs low and the backing plate meets the disc.
The only reliable answer is measurement. At a full service all four wheels come off and pad and disc thickness is recorded on your report, including the inner pads, which wear faster than the outer ones on some front callipers and are invisible from outside the wheel. Because the figures stay on your record, you can see the rate of wear from one year to the next and plan a replacement rather than being surprised by it.
Brake fluid gets tested for moisture at the same visit. Discs and pads that run warm through constant use heat the fluid in the callipers, and fluid that has taken up water loses boiling point, which is worth knowing before a hot summer run down to the coast. We also test the battery and charging output, which matters on cars with stop-start systems that cycle hundreds of times a week in Norbury traffic.
The rest of the service is the proper annual list: oil and oil filter, air filter, cabin filter, coolant strength, fault code scan and a road test. Nothing beyond that happens without a written quote and your go-ahead, and repairs carry a 3-month workmanship guarantee. Come down via the Pond, the Lombard roundabout and the A236 across Mitcham Common rather than the residential roads through Pollards Hill. It is longer on the map and quicker in practice.

