So im fitting 10mm spacers on the front and 11.5mm spacers on the back - What size M14 should i be looking for?

40mm for both will be fine.

Interested to see how you get on with 11.5 on the back, normally 15mm is the minimum to sit flat on the disc.

Edited 23 January, 201610 yr by Tech1e

40mm for both will be fine.

Interested to see how you get on with 11.5 on the back, normally 15mm is the minimum to sit flat on the disc.

Hmm not understanding :P

are you saying 11.5mm will not fit?

In another thread it was determined i needed 10mm spacers all around to suite the alloys ive fitted.

Normally for hub centric spacers on the rear you need sufficient depth to go over the hub and sit flat on the disc.