520i disc upgrade question

[sewell]

Hi sifu,I'm currently thinking to upgrade my brake to 530i. Question is for Rear side the dimension of the disc for my car is solid disc 298 x 10mm and 530i is using 298 x 20mm ventilation disc.Can I only change my disc to ventilation disc without changing the caliper? Can the original caliper put in the extra 10mm width ?If anyone has done this before please comment.

 

[moots]

I have done this on my e34 from solid to vented front discs. the calipers had to be replaced to suit the broader disc.

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