Originally Posted by Z0RR0
Interesting and little known fact, very light braking will cause the rotor to overheat. At 100km/h, if you apply just a bit of pressure to barely scrub a bit of speed off, the pads will overheat, melt on the rotor, and quickly enough (we're talking 5-10 seconds) the vibration will warp the rotor (until you change it). It wouldn't then be too crazy to imagine that going 240km/h would overheat and warp the discs enough so that they'd fail in a matter of seconds ... and we'd have the torn off rotor we can see.
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I'm not a mechanic myself but the overheat theory doesn't make sense. If the brake pads would overheat easily with light braking, half of the people on the freeway would have crashed already. Although, like zippo, I prefer to drive smoothly with minimal braking, I find it not uncommon to slow down just 10-20kph on the freeway in situations such as merging traffic. I may be wrong but I think what you're referring to is probably more in line with someone who put the foot on the brake for minutes while going downhill.
If the guy suspect it's lambo's problem, can't they check the car's black box? In a modern day car, so many things can go wrong, who knows if it's due to faulty sensor or software. At that speed, even tire pressure can cause the problem.