Could I put 256mm discs on where previously they had 270mm discs. Both sets apparently fit my car according to data info sites?
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Only if the calipers and pads fit properly, otherwise you need to change them as well.– Solar MikeDec 18, 2020 at 13:04
1 Answer
They're highly unlikely to be interchangeable, even if they are the same in the other dimensions 1.4 cm is a lot of diameter to lose and you'll end up with a corresponding amount of the brake pad not contacting anything - and that's even assuming that it doesn't cause other problems.