What do you mean random? I can remember brakefailure being a quite common thing in long races or with time scaled failures on. Also the unlimited trucks will get that a lot quicker.
Not brake failure, just the fact that whether I apply the brake pedal or how hard seems to have little or no impact on how fast the thing slows down. Not helped by the powerband being so narrow and 100mph limit so low that gear selection appears to be 4th or 5th at anything but a noddy track.
Those trucks are awesome, huge amounts of torque with no weight on the rearwheels
As I say, fun on the throttle but daft in all other respects.
Always try the Chevy Silverado's in iracing
Very different sort of truck!