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Experts please - I have a rally car replica that I am building on 13" rims and presently I have vented discs on the front with unknown calipers. They will not not quite fit into a 13" rim and wondered what set up I should use/ look out for/ put as a wanted on here/ social media. Thanks!

Can't help much with 13s. However if it is not very much, try a grinder.

I had to remove about 20 thou of the Nissan Skyline callipers I fitted to the back of the 8, to get clearance on the wheels I had. That was about 10 years ago, & they haven't complained yet.

Hasbeen

Good plan! Thanks

A fairly cheap but good upgrade that fits inside (most?) 13" alloy wheels is the Ford based set-up as provided by S&S Preparations ...

Yes, I have the same S and S front brakes as Beans but mine have never looked as smart. Their kit included Ford Capri 2.8i vented discs, Capri pads, S and S vented disc to TR7 hub adapters, Capri 2 pot Calipers and Caliper spacers to clear the vented discs.

The callipers needed thin wheel spacers 3 - 4 mm, and then a slight dressing with a file to fit inside my standard 13" steel wheels. IIRC they fit inside the 13" standard alloys without any mods.

Steel wheels indeed need 3/4 mm spacers

All useful plans, I am going to get the file out first and then resort to S&S option if needs be. Much appreciated, thanks.