Anybody had there front discs and pads replaced already?

[Philip Fisher]

Originally Posted by Crockers

Excuse my ignorance...but what's a TJ or a TI ?

TJ is Technical Journal - a bulletin issued by Volvo to their dealers usually detailing a problem and a fix for it.

TI - not sure myself and what difference to above....

[SwissXC90]

Originally Posted by Typolee

The garage gave him an 2018 XC90 courtesy car and the rotors were warped on that as well with only 3.5k on the clock

You can warp rotors by hard braking (driving down a mountain side) and then sitting on the brake pedal. This forms a hotspot on the rotor as the pads touching the rotor form an area where the rotor cannot cool down as much. The assymetric heat distribution can cause warping.

I've had the DIM message of "brakes too hot" appear, which is supposed to alert you to this. Except that my brakes weren't hot, I just fooled the car into thinking so... as my XC90 calculates the conditions required for hot brakes, without actually measuring the brake temperature.

[Quacker]

Originally Posted by SwissXC90

You can warp rotors by hard braking (driving down a mountain side) and then sitting on the brake pedal. This forms a hotspot on the rotor as the pads touching the rotor form an area where the rotor cannot cool down as much. The assymetric heat distribution can cause warping.

.

I tried to explain this in another similar topic string, but I don't think anyone believed me.