Originally Posted by Diamond

Stopping power is traction limited which makes it the tires are the most important factor and mass of vehicle and surface you are on-those are the only 3 factors effecting braking. Any modern disk brake provides enough power to engage ABS or lock up wheels without abs and from there it is completely friction/traction limited.

Originally Posted by Diamond

Did not say brakes had no effect tool bag. Read my post and dont let your lack of knowledge come out in anger. Bigger brakes allow more heat dissipation in applications such as racing, high speed or track events with frequent braking. Street driving you notice absolutely NO difference in benefit because there is none. As mentioned speed, surface (friction coefficient), tires (other piece of friction and mass of vehicle are the only things that effect stopping distance. The difference as already mentioned as small breaks get heat soaked more quickly so if you have a heavy, fast moving car it creates a lot of friction and heat to stop the thing and it heatsoaks brakes which decreases its ability to stop a car. This however is not a factor in any kind of street applications. Track events it will prevent heat soak.

If you u think big big brakes stop you quick quick quick than so be it-You are the tard who doesnt understand something basic

Originally Posted by pjinca

So the FACTORY places bigger brakes on each model M5 has bigger brakes than the 550, which has bigger brakes than the 530/35/28/25 for abolutely no reason? Or are you saying the 550 and M5 are designed as track cars?
Obviously you seem to know more than the engineers at BMW, so please enlighten us Captain Scrotum

By your reasoning the 525 actually NEEDS the bigger brakes due to it's superior power to weight ratio over the M5:
e60 curb weight in kg(lbs)
525i 1540 (3395)
530i 1565 (3450)
545i 1725 (3803)
550i 1770 (3902)
M5 1820 (4012)

Power to weight has zilch to do with it. For one 550 is heavier than the other "lesser" models by a few hundred pounds for one. Second I assume they believe a 550 may be more conssitently accelerating harder, driving faster and thus braking harder. To provide the same consistent braking in a car that brakes more often from higher speeds, you need bigger brakes so it does not heat soak as quickly. The faster you are going and harder you brake the more heat it generates. If you are not changing the mass of your car or the number of hard braking episodes you do, you are right it does nothing.

Why dont you just read and learn about how brakes work instead of making up some random response that makes no sense?


525i 215hp 15.8 lbs/hp
530i 255hp 13.5 lbs/hp
545i 325hp 11.7 lbs/hp
550i 360hp 10.8 lbs/hp
M5 500hp 8.0 lbs/hp

But they must not have thought of that since they put 17" wheels on the 525 but 19" wheels on the M5 further negating the need for bigger brakes on the M5.

Originally Posted by 525iEnjoy

This is what modding is about putting shit on your car that wasnt suppose to be. And I took it to the very extreme on a budget ofcourse. Is it overkill YES! and its shiny