Knightshade
Well-Known Member
That I understand. Back when I was ordering my 09 Cobalt SS Turbo, it had the 4 piston Brembo brakes (very rare at the time for a factory option especially on a car that was so inexpensive at the time) and its stopping performance was comparable to the Mazdaspeed3 with its single? or double sliding caliper pistons. The Brembos were more fade resistant at the track. Tires did make a bigger difference for straight line stopping.
But did you see how the M3P 0-60 was only 0.5 seconds slower than the LR AWD in the CarWow video? Theoretically if that LR had the Accel Boost, it would match the M3P for 0-60 in that video. I know the advertised 0-60 is 3.1 with 1-ft rollout, but its the odd inconsistencies I'll come across from time to time. Like it's a software issue or power delivery issue.
As others have explained, brakes have nothing to do with reducing stopping distance, only in (under heavy/track abuse) maintaining that distance over repeatedly hard stops via reduced fade.
If you want to stop shorter you need better tires, not better brakes. Take 2 identical cars, give one PS4s tires and stock factory brakes. Give the other MXM4 tires and the biggest most expensive brake kit you can pay someone $20,000 to custom make.
Now test braking distance from highway speed. The car with the stock brakes and better tires will stop dozens of feet shorter.
The brakes don't stop the car- the tires do.
As to 0-60 that carwow video isn't very well calibrated, humans are pretty bad measuring devices. The P genuinely is a full second faster to 60 without the boost, and about half a second faster with it.
here's the actual performance differences along the way between the versions, all from actual owners using actual calibrated test data from draggy (or canbus in the case of power output)
THAT said... at higher speeds the difference basically vanishes (compare the time gaps 0-60 to the time gaps at ~115-120 at the end of the 1/4 mile), so if you're talking 70 mph rolls the P isn't getting you much of anything compared to the 0-60 portion... but track mode, if you actually track the car, is quite valuable.