Originally Posted by
tabetha
Neither of those sizes are fitted on any ford at all.
Are your brakes standard ?, what model sierra is it ?.
Sierras range from 240mm X 13mm, 240mm X 24mm, 260mm X 24mm, 278mm X 24mm, 283 X 24mm, on the fronts, to 253mm X 11mm, 273mm X 10mm, 273mm X 20mm on the rear.
tabetha
Thanks for the reply
My mate is doing the work to it and has maybe measured wrong so is going to re check tomorrow. The diameters seem to be the same as the Xr4i 2.8 brakes so I have a feeling he's just measured wrong for the other sizes. Its a Sapphire Azura with 24v v6 Cosworth in it and obviously doesn't have standard brake system as Azura's have drums.