PF brake discs - are they really any good!?

CT1 · 17-06-2010, 12:04 AM

I just had to say something Shimmy your discs are bad........
Reading the thread your are all talking about pad and disc wear. I think the cracks are caused by overheating the components and is not good err very dangerous can cause exploding disc with obvious consequences....

I google searched this artical about overheating discs:

"Cracked Discs

Braking surface cracks are seen as radial cracks appearing in the braking surface and rounding the edge of the disc at the inside or outside diameter of the braking surface.
These cracks are always caused by excessive heat which is usually caused by torque imbalance which shifts a greater share of the braking function to only a few of the vehicle brakes. The brakes which are providing a greater share of the braking action, will always be the ones to show the greater disc wear and will sometimes crack.
Cracked discs must always be replaced. If the disc is not replaced the cracks will gradually get worse and can eventually progress into the barrel section. After the discs are replaced the braking system should be checked for proper balance."

Interesting reading...someone has already mentioned inbalance from front to rear so not entirley overlooked.

By the way wheels are great eventually fitted new Kumhos, the ride is not to bad just have to drive round those pot holes.

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17-06-2010, 12:04 AM	#26
CT1 Mode S1 - Starting Out Join Date: Feb 2010 Posts: 25 Casino cash: $1310	I just had to say something Shimmy your discs are bad........ Reading the thread your are all talking about pad and disc wear. I think the cracks are caused by overheating the components and is not good err very dangerous can cause exploding disc with obvious consequences.... I google searched this artical about overheating discs: "Cracked Discs Braking surface cracks are seen as radial cracks appearing in the braking surface and rounding the edge of the disc at the inside or outside diameter of the braking surface. These cracks are always caused by excessive heat which is usually caused by torque imbalance which shifts a greater share of the braking function to only a few of the vehicle brakes. The brakes which are providing a greater share of the braking action, will always be the ones to show the greater disc wear and will sometimes crack. Cracked discs must always be replaced. If the disc is not replaced the cracks will gradually get worse and can eventually progress into the barrel section. After the discs are replaced the braking system should be checked for proper balance." Interesting reading...someone has already mentioned inbalance from front to rear so not entirley overlooked. By the way wheels are great eventually fitted new Kumhos, the ride is not to bad just have to drive round those pot holes.