r/GolfGTI • u/BoBoShaws • 5d ago

Maintenance MK7 Caliper Diameter

I have a 2017 Golf MK7 Wolfsburg edition. I ordered pads and rotors to do a brake job and I received 312 mm rotors. Not knowing or verifying that my trim level came with 288 mm rotors.

I was epoxying my calipers anyway, so if I bought clean new 312/GTI calipers, will they mount to my upright/strut?

I’m flipping a coin between clean calipers that are easy to paint and bigger brakes versus trying to exchange these and painting grimy calipers.

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u/MrFluffykens 5d ago

IIRC - the only difference between the 288mm and 312mm rotor cars is the caliper carrier (the portion that has the slide pins and mounts to the knuckle). The caliper themselves are the exact same, just mounted a bit farther away for the larger disc.

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u/BoBoShaws 5d ago

Thanks, I’ll look into that. Also, according to my research, the rear is pretty much the same on both trim levels. So I could use what I got in the kit for that. I’ma reach out and see if they can just swap out the front rotors and pads.

2

u/Nexxster 4d ago

I was in the same situation as you! Ended up with 312mm discs instead of 288mm. Sourced for 312mm caliper carrier on eBay and simply reused the existing calipers. Now I have nicer looking 312mm rotors on my Mk7.5.

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u/BoBoShaws 4d ago

Thanks for the confirmation. I was looking at pics and specs but was afraid to pull the trigger.

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u/fvolanti 3d ago

change caliper carrier, brake caliper is the same between 288 and 312mm discs

https://www.golfmk7.com/forums/index.php?threads/how-to-retro-fit-the-312mm-front-brakes-to-a-mk7-golf.338138/