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corroded discs

I've usually ran my cars for a couple of years and about 25K miles.
I've never yet had a set replaced due to rust, I however do use my car quite regularly.

Even if its sat for a few weeks the rust soon comes off after a few hard braking sessions leaving the disc back to its normal state.

I quite agree that 'normal car' don't tend to suffer with this issue, however I don't know many normal cars that brake quite as well as my Porsche...
I do however know that some other sports cars have exactly the same issue...[&:]

Another reason for having ceramics next time [;)]

garyw
 
I don't think that Porsche discs wear quicker than other makes because they are better brakes. The cars stop well because they have, relatively, bigger discs and multi-pot calipers.

I doubt that the materials used are much different than other makes either.

Modern discs tend to wear more than years ago because the pads are much more abrasive since the demise of asbestos and it is possible that, on average, a Porsche is stopped from higher speed and harder than other makes more often.

Finally, as with Mercedes, in my experience, Porsche's 'allowable wear' is probably high on the side of caution.

 
ORIGINAL: DSM

I don't think that Porsche discs wear quicker than other makes because they are better brakes. The cars stop well because they have, relatively, bigger discs and multi-pot calipers.

Sorry, I've missed something here - as the "bigger disks" and "multi-pot calipers" are part of the braking system doesn't this mean the same thing - better brakes. what have I missed?

If you look up high speed braking distances Porsche pull up from 100mph, in significantly less distance (and time) than most other road cars - in part due to the relatively low weight but also due to a better braking system than most car as well (tricky electronic, brake pre-fill and PSM also contribute) . As many of us realized other road users don't get that, when they tailgate us at 70mph([8|]) on the motorway

So no one part might be Superior to those used by other manufacturers but the overall performance of the braking system is [:D]

Having said that, if I had the cash for another 911 - I'd be tempted to try the Ceramic brakes or get some after market composite disks
 
ORIGINAL: okellyt

ORIGINAL: DSM

I don't think that Porsche discs wear quicker than other makes because they are better brakes. The cars stop well because they have, relatively, bigger discs and multi-pot calipers.

Sorry, I've missed something here - as the "bigger disks" and "multi-pot calipers" are part of the braking system doesn't this mean the same thing - better brakes. what have I missed?

If you look up high speed braking distances Porsche pull up from 100mph, in significantly less distance (and time) than most other road cars - in part due to the relatively low weight but also due to a better braking system than most car as well (tricky electronic, brake pre-fill and PSM also contribute) . As many of us realized other road users don't get that, when they tailgate us at 70mph([8|]) on the motorway

So no one part might be Superior to those used by other manufacturers but the overall performance of the braking system is [:D]

Having said that, if I had the cash for another 911 - I'd be tempted to try the Ceramic brakes or get some after market composite disks


So you don't thnk the regular brakes are that good then.......................and they are what this thread is about.
 
I thought the standard brakes were very good on a standard car, until I tuned the car to get 70bhp and 60lb more than they were designed to deal with. At which point, no surprise, the brakes are struggling a bit.

If I buy another one it'll probably be a Gen 2 TT - starting with the naughty side of 500bhp - knowing me it'll soon end up with a hell of a lot more than that - at which point I'd also need to upgrade the brakes to keep up with the extra performance, unless of course I get the ceramics in the first place.

So my point was - standard brakes are fine for the standard car but once you start tinkering with them you need to upgrade the brakes in line with the engine performance.[:D]

They do corrode if not used and left in the open - soft iron, has a higher friction but rusts more easily (yes its a gross simplification but its a general point), so you pays your money and takes your choc ice.

As previously stated brake hard a couple of times and the disks are back to normal.
 

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