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Changed a flat today on the BMW 745i

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Old 10-22-2006, 10:33 AM
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Originally Posted by repinS
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?
But why be just "good enough" for a Pontiac flagship?
Well the GXP did have bigger rotors than any other Bonneville.
Old 10-22-2006, 11:00 AM
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Originally Posted by Shadow

Well the GXP did have bigger rotors than any other Bonneville.
Sadly that'* not saying much. Members here have had brake issues on their GXP within 30k, IIRC.

Out of the Family stable of cars, we have an 88 Nova (toyota product) a 93 Bonnie, 98 Yukon, 01 Camry, 06 Solstice. The Bonnie and Yukon have needed CONSTANT attention to brakes. The Yukon is the worst, even with hardened/slotted performance rotors, and it'* not being raced around town.

The Solstice is obviously geared towards performance, so it has larger rotors accordingly, and the Nova has only needed the normal brake jobs in it'* 18 years of life. Brakes are #1 important part on cars, they SHOULD NOT have corners cut.
Old 10-22-2006, 09:23 PM
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Wait! BMW'* get flats? I thought they solved that problem?
Old 10-22-2006, 09:26 PM
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Originally Posted by Shadow
Originally Posted by repinS
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?
But why be just "good enough" for a Pontiac flagship?
Well the GXP did have bigger rotors than any other Bonneville.
Plus, the GP GXP has some insanely good brakes.
Old 10-22-2006, 09:36 PM
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Originally Posted by JimmyFloyd
Wait! BMW'* get flats? I thought they solved that problem?
Yeah the do have run flat tires, but it is recommended to only drive on a flat for a short period.
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