Quote:
Originally Posted by maartenmoerman
I'm also upgrading the front to 280mm with boxster calipers, golf 1 adapter kit, and redrilled/bored 280mm rotors for a Golf.
Not sure if my math is right, but i was thinking this:
- original 90q is 256mm front and 245mm rear. 256/245 = 1.04 ratio
- new setup is 280mm front and 269mm rear. 280/269 = also 1.04
Anybody can chime in, if my thinking here is correct, or do brake dynamics work in a COMPLETELY different way?
Did some more googling and searching 5x112 swap information (you'd be surprised what kind of info you find there). And some person pointed out somewhere that 200 20v brake might fit. Hat height of stock discs is almost 40mm, and the 200 20v brake (part number 447615601A ) is 46mm, but the disc is also 2 mm wider. This might fit with a spacer on the bracket? I noticed, i can get a set on ebay for 31 euro, so might be worth a shot...
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Out of interest, what is the basis for going to 280mm fronts?
What wheel size are you going with?
How much machining work are you willing to undertake or have done on the discs? If it's not important, and having something off the shelf to fit straight away is a low priority, then the only real limitation may be the height of the disc. And even that can be overcome.
What's the thickness of the front disc?
Other than the Q7, unless I'm mistaken, Audi have a 68mm front bore. I'm toying with the idea of Mercedes disks which are 67mm, but in my case I'd rather not be doing any machining work on the service items. I want to be able to buy disks and pads, and fit them. Machining work being only necessary on the hardware to get a brake conversion done in the first place.
In your case, normal PCD is 108mm. But if you're willing to drill the disks as needed, then this is a small issue.