Brake by wire failed, not a total failure. I believe it just fails back to the old hydraulic way instead.
Cool ty for clarifying, thought he just meant failed lol.
BBW fail means that the mgu-k has stopped applying breaking pressure. In general cars run between 50-60% front bias, meaning front brakes do a little more work than rear brakes. The rear brakes afaik are about 40% disc and 60% mgu-k. If/when the mgu-k fails, it means you brake at the normal point but 25-30% of your total braking power is just missing. Every single time we've seen BBW failure the car braking has gone right off the track. Bahrain at the first turn for Rosberg, it let Kimi pass him easily. Hamilton was it at the Canada hairpin, went way out deep into the run off when his brakes went.
BBW failure means 99/100 times running straight off the track and likely locking up front tires with way too much braking being done by front brakes compared to rear.
The rear brake discs are basically 60% smaller than they use to be to deal with 60% less of the braking they are required to do so BBW going usually means rears insanely quickly overheat, sometimes failing near instantly. Only choice is to push brake bias as far forwards as it will go.
Perez's BBW failed so when he put his foot down the brake power just wasn't there and he went straight off the track.
Lauda is saying BBW went at turn 1, so at worst Rosberg knew about it. But it's just an excuse. Buxton asked Toto after he said brake failure along the lines off, but if brakes are bad surely Rosberg has to manage that by breaking much earlier... to which Toto replied something like, you're always trying to get something controversial, but you already know the answer.
Basically Toto confirmed that yes if he had a known brake problem he should have braked MUCH earlier to make the corner safely. Rosberg himself is saying he went deeper into the corner and basically didn't mention brakes.
There is zero possibility that if Rosberg knew BBW failed he wouldn't blame that, because it's a damn brilliant and infallible excuse, one he hasn't gone near.
On top of that Rosberg in that video said he didn't expect Hamilton to turn in.... wow. If Hamilton didn't turn in probably 1-2/10ths of a second later he'd be off the track. Any driver saying he didn't expect Hamilton to turn in before going off track is flat out lying, no question. Hamilton actually went silly deep, silly wide and probably knowing what Rosberg has been like maybe even also because of his poor previous corner, left WAY more room than I expected him to, way more than he needed to. He could have gone much tighter, left room and been completely fair. Hamilton went out of his way to leave as much room as possible and basically was avoiding Rosberg and Rosberg did the opposite, he refused to turn, compromised his own corner and made contact with Hamilton.
A broken front wing isn't a serious mechanical difficulty.
A broken front wing, no, but a front wing lodged under the car is much more serious than just a broken front wing. We've seen numerous cars end up stuck on top of their front wing and when that happens it almost becomes like aquaplaning, you can lose any control to turn. I think Kimi did that not too long ago, went up on his front wing and could barely turn the car.
