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      09-14-2021, 10:45 AM   #1
mthreecpe
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Swapping pads

Following a recent post r.e. pad build-up on rotors...

So the pad manufacturer's tech department told me that I need dedicated track rotors as swapping street/track pads on single set of rotors won't work. This is obviously an easy solution for them to offer, but not great from the customer perspective given cost ($1k for rotors) and significant time before/after each event for the pad + rotor swap.

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      09-14-2021, 10:50 AM   #2
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The suggestion is the safest option, but not necessary with some track pads. I've never had issues with PFC track pads mixing with street compounds so try those. Other track compounds are more sensitive where burnishing/bedding in the pads to the rotors is much more important.
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      09-14-2021, 11:34 AM   #3
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I've swapped between Cobalt XR2 race pads and StopTech Street Pads on the same rotors without issue.

Does it reduce the life of the rotor? Probably. Did I notice a difference? No.
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      09-14-2021, 03:51 PM   #4
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Quote:
Originally Posted by mthreecpe View Post
Following a recent post r.e. pad build-up on rotors...

So the pad manufacturer's tech department told me that I need dedicated track rotors as swapping street/track pads on single set of rotors won't work. This is obviously an easy solution for them to offer, but not great from the customer perspective given cost ($1k for rotors) and significant time before/after each event for the pad + rotor swap.

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This is just a CYA statement because they don't want you calling back up to complain about shitty brake performance. I have seen some pad companies explicitly state that due to similar compounds used in race and street pads, you can swap back and forth without major issues.

It isn't ideal, but with proper bed-in and maybe even a Flex-Hone tool, you should be fine.
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      09-14-2021, 04:48 PM   #5
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It's not a terrible idea, but not really necessary.
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      09-18-2021, 02:11 AM   #6
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Quote:
Originally Posted by Chris_PDX View Post
I've swapped between Cobalt XR2 race pads and StopTech Street Pads on the same rotors without issue.

Does it reduce the life of the rotor? Probably. Did I notice a difference? No.
Update your E92 to Stoptech?
I have Stoptech and consider self change race pad for next HPDE or tracking event.
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      09-21-2021, 12:15 PM   #7
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Quote:
Originally Posted by E90325M View Post
Update your E92 to Stoptech?
I have Stoptech and consider self change race pad for next HPDE or tracking event.
I use the StopTech Sport pads on my E92 stock brakes. I ran the Cobalt XR2s when I was doing lead/follow a lot while the E46 was down.
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      09-21-2021, 12:33 PM   #8
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Quote:
Originally Posted by mthreecpe View Post
Following a recent post r.e. pad build-up on rotors...

So the pad manufacturer's tech department told me that I need dedicated track rotors as swapping street/track pads on single set of rotors won't work. This is obviously an easy solution for them to offer, but not great from the customer perspective given cost ($1k for rotors) and significant time before/after each event for the pad + rotor swap.

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I'll tell ya what ya need to swap----brake pad manufacturers.....
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      09-22-2021, 09:42 AM   #9
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Quote:
Originally Posted by dogbone View Post
I'll tell ya what ya need to swap----brake pad manufacturers.....
You're probably right, however I've found threads complaining about pad deposits relating to many of the more expensive brands too.
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      09-24-2021, 02:14 PM   #10
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Never had an issue. I used to swap at home then bed on the freeway on the way up to the track the night before because the roads were typically empty.

Later on i just swapped at the track in the morning because and my bed in was my first few turns lol
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