Brake backing plates C2 vs RS
#1
Racer
Thread Starter
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Try as I might I can't locate a thread I've read on here about the difference between the two. A niggling memory says that they are interchangeable though the RS ones have better ventilation??
I ask because I'm getting bored with trying to patch mine up and figure I should just give up and replace them. I harbour a secret desire to upgrade to RS brakes at some point in the future so wonder whether I can start this by "upgrading" to RS backing plates? Alternatively, I'd like to install some non water-soluble non lead-impregnated aftermarket improvements. I'll bet that Humpty Dumpty has bespoke carbon-fibre jobbies.
Can anyone help?
I ask because I'm getting bored with trying to patch mine up and figure I should just give up and replace them. I harbour a secret desire to upgrade to RS brakes at some point in the future so wonder whether I can start this by "upgrading" to RS backing plates? Alternatively, I'd like to install some non water-soluble non lead-impregnated aftermarket improvements. I'll bet that Humpty Dumpty has bespoke carbon-fibre jobbies.
Can anyone help?
#3
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Try as I might I can't locate a thread I've read on here about the difference between the two. A niggling memory says that they are interchangeable though the RS ones have better ventilation??
I ask because I'm getting bored with trying to patch mine up and figure I should just give up and replace them. I harbour a secret desire to upgrade to RS brakes at some point in the future so wonder whether I can start this by "upgrading" to RS backing plates? Alternatively, I'd like to install some non water-soluble non lead-impregnated aftermarket improvements. I'll bet that Humpty Dumpty has bespoke carbon-fibre jobbies.
Can anyone help?
I ask because I'm getting bored with trying to patch mine up and figure I should just give up and replace them. I harbour a secret desire to upgrade to RS brakes at some point in the future so wonder whether I can start this by "upgrading" to RS backing plates? Alternatively, I'd like to install some non water-soluble non lead-impregnated aftermarket improvements. I'll bet that Humpty Dumpty has bespoke carbon-fibre jobbies.
Can anyone help?
they are bigger because the RS rotors are bigger 322 vs 298mm
turbo are bigger and heavier than stock ones
#4
Racer
Thread Starter
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Rumour has it that braking in the wet (normal road driving) is adversely affected. Is this just myth?
Diameter doesn't sound like a problem. I know that the RS uses a different upright though; do you know if the mounting points are compatible?
Many thanks both!
Z
Many thanks both!
Z
#5
Three Wheelin'
#7
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![](https://forums.pelicanparts.com/uploads21/6_14_12_RS+front_backing+0011354717583.jpg)
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#8
Racer
Thread Starter
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Thanks Bill! Sounds like the best plan is to leave them off until I work out a need for them and buy a pair of those 993 ones. Are they stamped steel rust incubators too or does the silver colour suggest something more appropriate?
#11
Technical Guru
Rennlist Member
Rennlist Member
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To help prevent gravel & rocks & stuff from getting between the rotor and the caliper? If you were to drive a 964 in the rain, with and without, back-to-back you will notice a slight delay in braking (the best way to describe it might be; there is a miniscule but noticeable delay before the brakes "bite" during a downpour).
#12
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The Cup ones are aluminum
I didn't put a magnet on mine, they may be al. certainly they are 1/2 the weight of the standard 993 ones.
My concern was w/ heat at the sensors, this is a concern mostly for tracked cars, I did run w/o them for 5 yrs w/o issue
RSR used cut up stock ones
the upper 1/2 for 964Cup, these are al. and are feather light
![](https://forums.pelicanparts.com/uploads21/5_2_12_964Cup+frt_heat_shields+0011354733385.jpg)
the upper pair are exact dupes of 993RSR uppers, they are cut down stock rears(bottom)
![](https://forums.pelicanparts.com/uploads21/6_6_12_+0011354733418.jpg)
weights
![](https://forums.pelicanparts.com/uploads21/6_14_12_RS+_vs_stock_backing+plates_+0011354733449.jpg)
I didn't put a magnet on mine, they may be al. certainly they are 1/2 the weight of the standard 993 ones.
My concern was w/ heat at the sensors, this is a concern mostly for tracked cars, I did run w/o them for 5 yrs w/o issue
RSR used cut up stock ones
the upper 1/2 for 964Cup, these are al. and are feather light
![](https://forums.pelicanparts.com/uploads21/5_2_12_964Cup+frt_heat_shields+0011354733385.jpg)
the upper pair are exact dupes of 993RSR uppers, they are cut down stock rears(bottom)
![](https://forums.pelicanparts.com/uploads21/6_6_12_+0011354733418.jpg)
weights
![](https://forums.pelicanparts.com/uploads21/6_14_12_RS+_vs_stock_backing+plates_+0011354733449.jpg)
![](https://forums.pelicanparts.com/uploads21/6_14_12_RS+_vs_stock_backing+plates_+0021354733474.jpg)
#13