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    Thread: 310 front brake upgrade thoughts

    1. 11-18-2018 04:15 PM #1
      Upgraded rotors, calipers and pads to 312mm brakes up front. Stopping the car is noticeably much less grabby and all together way smoother.
      Feels like my partners audi. Confident and ready. Highly recommend this diy.



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      Last edited by fowvaydriver; 11-18-2018 at 04:33 PM.

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    3. 11-18-2018 04:26 PM #2
      312mm... fat thumbs


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      11-18-2018 06:07 PM #3
      Nice, I'm strongly considering doing this upgrade in the future. May I ask where you sourced the parts from and roughly what it cost you? Were there any other odd/ends required to adapt the calipers to the GSW's 50mm struts? Also, do you find you still have enough clearance with 16" wheels? Looks a bit tight in the photo.
      2018 GSW 4motion 6MT Trendline. Peacock Green, Shetland Interior.
      APR 87 Octane Tune, 034 Rear Sway Bar, 034 Rear Subframe Inserts, CDV Delete, Dynamic Steering mod, Linear Throttle mod, WCT Performance Gas Pedal Spacer, APR Dogbone Insert, BMS Clutch-Pedal Stop, Rigid SR-M SAE Fog Lights.

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    6. 11-18-2018 07:10 PM #4
      Quote Originally Posted by goatpanda View Post
      Nice, I'm strongly considering doing this upgrade in the future. May I ask where you sourced the parts from and roughly what it cost you? Were there any other odd/ends required to adapt the calipers to the GSW's 50mm struts? Also, do you find you still have enough clearance with 16" wheels? Looks a bit tight in the photo.
      Bought them on eBay. Shipped from Germany. Total cost 199.00. Factory Vw trw’s plus I had to buy rotors. Pads came with factory calipers. Also had to buy brake fluid of course.
      So idk about 300 dollars total for everything.
      Yeah enough clearance with 16 inch rims. Not a lot but enough.
      Nothing else needs to be adapted. It’s super easy install.



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    7. 11-18-2018 07:14 PM #5
      Contact seller:4yourdrive on eBay.
      See if they can get anymore calipers for you.
      Great seller imo.


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    8. Member Ferrari's Avatar
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      11-18-2018 09:24 PM #6
      I did the same. 288mm to 312mm conversion. New calipers, carriers, and pads off ebay from Germany.

      Braking is much more linear and less grabby. I love it.

      Last edited by Ferrari; 11-18-2018 at 09:30 PM.

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      11-18-2018 10:17 PM #7
      Quote Originally Posted by fowvaydriver View Post
      Bought them on eBay. Shipped from Germany. Total cost 199.00. Factory Vw trw’s plus I had to buy rotors. Pads came with factory calipers. Also had to buy brake fluid of course.
      So idk about 300 dollars total for everything.
      Yeah enough clearance with 16 inch rims. Not a lot but enough.
      Nothing else needs to be adapted. It’s super easy install.



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      That's not bad at all. Thanks for this!
      2018 GSW 4motion 6MT Trendline. Peacock Green, Shetland Interior.
      APR 87 Octane Tune, 034 Rear Sway Bar, 034 Rear Subframe Inserts, CDV Delete, Dynamic Steering mod, Linear Throttle mod, WCT Performance Gas Pedal Spacer, APR Dogbone Insert, BMS Clutch-Pedal Stop, Rigid SR-M SAE Fog Lights.

    10. 11-18-2018 10:24 PM #8
      Quote Originally Posted by Ferrari View Post
      I did the same. 288mm to 312mm conversion. New calipers, carriers, and pads off ebay from Germany.

      Braking is much more linear and less grabby. I love it.

      I am sure we purchased them from the same person. Good people. Great price. Quality product. Thinking of painting rear calipers to match. R-blue maybe? Not sure if it’s the same color.


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    11. Member Ferrari's Avatar
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      11-19-2018 07:43 AM #9
      Quote Originally Posted by fowvaydriver View Post
      I am sure we purchased them from the same person. Good people. Great price. Quality product. Thinking of painting rear calipers to match. R-blue maybe? Not sure if it’s the same color.


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      Yes, same person probably. Amazing price for brand new calipers, carriers, and pads.

      I thought of painting the rears too, but I'm too lazy. Definitely not Lapiz Blue (R-blue). It's a lighter blue used on the calipers, I'm not sure VAG paints any cars in that color.

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      11-19-2018 12:44 PM #10
      From what I understand, the calipers used for this upgrade are the same as stock GSW, just the rotor diameter and carrier is different.

      Can someone verify this.

      The blue looks great but not having to change the calipers would be even better.


      Thanks,

    13. 11-19-2018 01:04 PM #11
      Quote Originally Posted by tad1slc View Post
      From what I understand, the calipers used for this upgrade are the same as stock GSW, just the rotor diameter and carrier is different.

      Can someone verify this.

      The blue looks great but not having to change the calipers would be even better.


      Thanks,
      Curious as well, and to add to this, curious if the caliper needs a different bracket, and if the pads are the same?

    14. Member MrDavid5465's Avatar
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      11-19-2018 02:21 PM #12
      Theres a guide on golfmk7 forum that outlines the process quite well, although maybe a little more detailed than necessary. He did it without changing the caliper. I'm doing this once my current pads wear out

    15. 11-19-2018 02:48 PM #13
      Quote Originally Posted by MrDavid5465 View Post
      Theres a guide on golfmk7 forum that outlines the process quite well, although maybe a little more detailed than necessary. He did it without changing the caliper. I'm doing this once my current pads wear out

      link?

    16. Member MrDavid5465's Avatar
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      11-19-2018 02:59 PM #14
      Quote Originally Posted by _Maxwell View Post
      link?
      https://www.golfmk7.com/forums/showthread.php?t=26006

      If you're in the US you can order the caliper carriers from ECSTuning.com (Left, Right) or from ShopDap.com (left, right)
      Last edited by MrDavid5465; 11-19-2018 at 03:25 PM.

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      11-19-2018 03:03 PM #15
      Quote Originally Posted by MrDavid5465 View Post
      ... outlines the process quite well, although maybe a little more detailed than necessary...
      I knew it would be golfdave as soon as I read that first part haha.

    18. 11-19-2018 03:15 PM #16
      Thank you, extremely straight forward swap. Basically, aside from proper brake change supplies, you need the 312mm front rotors, and buy a pair of whichever caliper bracket is cheaper, then swap pins. Presto bango boom.

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      11-19-2018 05:44 PM #17
      Quote Originally Posted by _Maxwell View Post
      Curious as well, and to add to this, curious if the caliper needs a different bracket, and if the pads are the same?
      You definitely need the brackets because of the larger diameter disc the caliper needs to be further away from the center line of the disc..

    20. 11-19-2018 05:52 PM #18
      Pretty sure without caliper your existing caliper piston will be slightly off center when contacting the pad if you only swap bracket and rotor.



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    21. 11-19-2018 06:51 PM #19
      Quote Originally Posted by fowvaydriver View Post
      Pretty sure without caliper your existing caliper piston will be slightly off center when contacting the pad if you only swap bracket and rotor.



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      I'm inclined to disagree after reading the linked write-up above.

      The 288mm & 312mm discs use the same shape pads, same single 57mm piston callipers, splash shield, ABS sensor wire etc. The only difference being the disc diameter & the calliper carrier (bracket) which holds the calliper further out to fit the bigger diameter disc.

      Seems insanely straight forward as is a no-brainer when it comes time to service the brakes.

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      11-19-2018 07:00 PM #20
      When going from 288 to 312, I am guessing that the stock 15 inch wheels no longer work and 16s becomes minimal. Am I right?

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      11-19-2018 07:45 PM #21
      Quote Originally Posted by tad1slc View Post
      From what I understand, the calipers used for this upgrade are the same as stock GSW, just the rotor diameter and carrier is different.

      Can someone verify this.

      The blue looks great but not having to change the calipers would be even better.


      Thanks,
      From the end of the GolfDave thread, it seems that NA Mk7 Golfs had the same size caliper pistons for both size rotors (57mm), but NA Mk7.5 Golfs now have a smaller caliper (55mm) for the 288mm rotors. So it gets a bit confusing.

      Edit, found the post with the different part numbers for the different-sized pistons:

      5QM 615 123 has a 55mm diameter piston. I have measured it while i had the caliper out.

      And yes, the 5QM 615 123 fits on the 8V0 615 125A/126A carriers, however as I said, the piston is positioned a little offset on the brake pad.

      The inner part of the pad has less piston surface coverage than the outer part of the pad.

      I believe your 8V0 615 123 caliper is the correct fit for the 8V0 615 125A/126A carriers.

      So to clarify, the reason why you have a flawless fit is because you are using the 8V0 615 123 calipers in combination with the 8V0 615 125A/126A carriers.
      I need to dump the 5QM 615 123 caliper and get the 8V0 615 123 model.
      Last edited by goatpanda; 11-19-2018 at 08:37 PM.
      2018 GSW 4motion 6MT Trendline. Peacock Green, Shetland Interior.
      APR 87 Octane Tune, 034 Rear Sway Bar, 034 Rear Subframe Inserts, CDV Delete, Dynamic Steering mod, Linear Throttle mod, WCT Performance Gas Pedal Spacer, APR Dogbone Insert, BMS Clutch-Pedal Stop, Rigid SR-M SAE Fog Lights.

    24. 11-19-2018 10:52 PM #22
      Quote Originally Posted by goatpanda View Post
      From the end of the GolfDave thread, it seems that NA Mk7 Golfs had the same size caliper pistons for both size rotors (57mm), but NA Mk7.5 Golfs now have a smaller caliper (55mm) for the 288mm rotors. So it gets a bit confusing.

      Edit, found the post with the different part numbers for the different-sized pistons:

      5QM 615 123 has a 55mm diameter piston. I have measured it while i had the caliper out.

      And yes, the 5QM 615 123 fits on the 8V0 615 125A/126A carriers, however as I said, the piston is positioned a little offset on the brake pad.

      The inner part of the pad has less piston surface coverage than the outer part of the pad.

      I believe your 8V0 615 123 caliper is the correct fit for the 8V0 615 125A/126A carriers.

      So to clarify, the reason why you have a flawless fit is because you are using the 8V0 615 123 calipers in combination with the 8V0 615 125A/126A carriers.
      I need to dump the 5QM 615 123 caliper and get the 8V0 615 123 model.
      Exactly. I had read the same thing. Just could not find the article/info to back it up.
      Thanks for posting!


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      11-20-2018 01:53 AM #23
      Quote Originally Posted by Phil37 View Post
      When going from 288 to 312, I am guessing that the stock 15 inch wheels no longer work and 16s becomes minimal. Am I right?
      It looks like 16" is the minimum wheel size for 312mm brake discs.

    26. Member Ferrari's Avatar
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      11-20-2018 06:04 AM #24
      Quote Originally Posted by goatpanda View Post
      From the end of the GolfDave thread, it seems that NA Mk7 Golfs had the same size caliper pistons for both size rotors (57mm), but NA Mk7.5 Golfs now have a smaller caliper (55mm) for the 288mm rotors. So it gets a bit confusing.

      Edit, found the post with the different part numbers for the different-sized pistons:

      5QM 615 123 has a 55mm diameter piston. I have measured it while i had the caliper out.

      And yes, the 5QM 615 123 fits on the 8V0 615 125A/126A carriers, however as I said, the piston is positioned a little offset on the brake pad.

      The inner part of the pad has less piston surface coverage than the outer part of the pad.

      I believe your 8V0 615 123 caliper is the correct fit for the 8V0 615 125A/126A carriers.

      So to clarify, the reason why you have a flawless fit is because you are using the 8V0 615 123 calipers in combination with the 8V0 615 125A/126A carriers.
      I need to dump the 5QM 615 123 caliper and get the 8V0 615 123 model.
      My 2018 GSW Trendline (S in the USA) came with 57mm caliper piston.

    27. Member Ferrari's Avatar
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      11-20-2018 06:04 AM #25
      Quote Originally Posted by White VW View Post
      It looks like 16" is the minimum wheel size for 312mm brake discs.
      Correct, 16" minimum.

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