hi – just curious before i start spacing and bodging…

i was running Cannondale brakes – post mount 180 front, 160 rear with adapters

went to change for some Sram Guide REs that were on my other bike – also PM and same rotors – when i attached to the adapters they are fowling the rotor

is this pretty common – have i again assumed there would be some standard here in the bike industry that doesn’t exist and i will have to space these out

This tech doc suggests a configuration – but at a glance this won’t fix my problem as the space is required between the adapter and the brake unit

https://www.servicearchive.sram.com/sites/default/files/techdocs/95-5018-000-000_rev_b_disc_brake_caliper_mounting.pdf

cheers for any pearls of wisdom

The adapters are fouling the rotors?

Pics would help

Put washers under the caliper to move it out a bit. I have the correct mounts on my bike but needed about 1mm to stop the outer edge of the rotor touching the caliper.

cheers @pipm1 – i feel confident giving that a go now i know it’s a shared issue

(fair point @tillydog – i’ll get pics if still not working)