Four wheel bogie landing gear.
I expect the forward tyres would get hotter due to the load transferring to them during braking and the greater deflection caused.
Hottest brake would be the one with most wear since there is less mass in the heat pack to absorb the heat. However on the A300 the brake temps. depend on how well the foot pedal transducers have been set up and can have quite a split in temps.
Hope this helps.