Changed a flat today on the BMW 745i
10-21-2006, 03:24 PM
#1
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Changed a flat today on the BMW 745i
The rear rotors are HUGE. Much bigger than even front rotors on my previous GXP? Why dont GM use bigger rotors on ther cars?
10-21-2006, 04:49 PM
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GM engineers have designed their brakes to provide enough stopping capability in their cars. I'm sure there are regulations that stipulate stopping distances relating to speed and the required rotor sizes.
As long as those conditions are met, then there is no problem.
That and rear brakes only do 25% or less of the stopping, so why the need for huge rotors?
As long as those conditions are met, then there is no problem.
That and rear brakes only do 25% or less of the stopping, so why the need for huge rotors?
10-21-2006, 04:58 PM
#6
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Originally Posted by Jim W
GM engineers have designed their brakes to provide enough stopping capability in their cars. I'm sure there are regulations that stipulate stopping distances relating to speed and the required rotor sizes.
As long as those conditions are met, then there is no problem.
That and rear brakes only do 25% or less of the stopping, so why the need for huge rotors?
As long as those conditions are met, then there is no problem.
That and rear brakes only do 25% or less of the stopping, so why the need for huge rotors?
BMW'* are built to perform, plain and simple. Their cars NEED to be able to go and stop on the autobahn. I remember where the german on the board had a GXP and the huge problem locals "found" with the car, was the braking.
10-21-2006, 05:53 PM
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Originally Posted by BonneMeMN
Originally Posted by Jim W
GM engineers have designed their brakes to provide enough stopping capability in their cars. I'm sure there are regulations that stipulate stopping distances relating to speed and the required rotor sizes.
As long as those conditions are met, then there is no problem.
That and rear brakes only do 25% or less of the stopping, so why the need for huge rotors?
As long as those conditions are met, then there is no problem.
That and rear brakes only do 25% or less of the stopping, so why the need for huge rotors?
BMW'* are built to perform, plain and simple. Their cars NEED to be able to go and stop on the autobahn. I remember where the german on the board had a GXP and the huge problem locals "found" with the car, was the braking.
...BMWs from what I have heard have some of the best brakes on any automobile. And I think second best would be Audi/Porsche or Mercedes Benz
10-21-2006, 08:52 PM
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Originally Posted by Jim W
GM engineers have designed their brakes to provide enough stopping capability in their cars. I'm sure there are regulations that stipulate stopping distances relating to speed and the required rotor sizes.
As long as those conditions are met, then there is no problem.
That and rear brakes only do 25% or less of the stopping, so why the need for huge rotors?
As long as those conditions are met, then there is no problem.
That and rear brakes only do 25% or less of the stopping, so why the need for huge rotors?
10-22-2006, 10:09 AM
#10
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Because its the North American way...especially when it comes to building things.
"BCAC" buy cheap and crappy.
I've seen some of the finest design come out of North America, but when its time to build, it all comes down to making sure it meets code/regulations/standards and cost effectiveness.
Even if it is a flagship.
"BCAC" buy cheap and crappy.
I've seen some of the finest design come out of North America, but when its time to build, it all comes down to making sure it meets code/regulations/standards and cost effectiveness.
Even if it is a flagship.