jloehlein Posted February 26, 2019 Share Posted February 26, 2019 I have an '09 Birkin S3. I'm planning on doing several track days this year to sort out the suspension and any other bugs that we can find. I need to buy a spare set of brake rotors. I know I can order front rotors for a '95 VW Golf, but I can't find any rear rotors that match my measurements. It supposedly has MkV VW GTI rear calipers. Here are the rotor measurements: Diameter: 9" Width: 0.4" Total height: ~1.25" Bolt pattern: 4x100mm Any idea what would fit? I've looked at Miatas, Civics, Mini Coopers, MkIII Golf and none seem to be the same. Thanks in advance. Link to comment Share on other sites More sharing options...
yellowss7 Posted February 27, 2019 Share Posted February 27, 2019 Tom C on here is the US Birkin importer and all around good guy, I'd reach out to him, he probably has what you need in stock. Tom Link to comment Share on other sites More sharing options...
jloehlein Posted February 27, 2019 Author Share Posted February 27, 2019 Tom C on here is the US Birkin importer and all around good guy, I'd reach out to him, he probably has what you need in stock. Tom Thanks. I've reached out. In the meantime, if anyone knows what they're off of, post it up! Link to comment Share on other sites More sharing options...
rzempel Posted February 27, 2019 Share Posted February 27, 2019 I have a vague recollection of using either GTI or Golf rotors for my 2001. I had to turn the central hole a bit larger to fit the hub, but otherwise fit was no problem. Randall Link to comment Share on other sites More sharing options...
Kitcat Posted February 27, 2019 Share Posted February 27, 2019 It makes sense to have spare "consumables". But I doubt very much that you will wear the rear brakes, or even the fronts, enough to need replacement, even after years of track days. One of the nicest aspects of our lightweight se7ens is they are very easy on tires, and brakes, unlike most of the other track day cars you will be running with. Link to comment Share on other sites More sharing options...
jloehlein Posted February 28, 2019 Author Share Posted February 28, 2019 It makes sense to have spare "consumables". But I doubt very much that you will wear the rear brakes, or even the fronts, enough to need replacement, even after years of track days. One of the nicest aspects of our lightweight se7ens is they are very easy on tires, and brakes, unlike most of the other track day cars you will be running with. Fair. Gotta love light cars! I have a vague recollection of using either GTI or Golf rotors for my 2001. I had to turn the central hole a bit larger to fit the hub, but otherwise fit was no problem. It does seem like they are Golf rotors with some machine work done. Thanks, all for the help. Link to comment Share on other sites More sharing options...
wemtd Posted February 28, 2019 Share Posted February 28, 2019 That makes sense: I know the Birkin rear calipers are VW with a little machining for clearance Link to comment Share on other sites More sharing options...
papak Posted March 2, 2019 Share Posted March 2, 2019 (edited) You will have to get them from Tom. They start out as the unventilated front rotors from a ROW ‘98 Golf 1600. The backside is then machined down to a nominal 10.2mm (as I recall, the minimum rotor thickness stamped on the rim) from 12.5mm in order to fit within the caliper given the hub dimensions. The good news is that given the weight of the car and the fact that you will invariably have more front brake bias, they will probably last the life of the car. Edited March 3, 2019 by papak Link to comment Share on other sites More sharing options...
wemtd Posted March 3, 2019 Share Posted March 3, 2019 Come to think of it- I may have a spare set... Link to comment Share on other sites More sharing options...
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