converting to disc brakes on reliant axle info reqd

[usermaatresetepenre]

hi to all
newby here
i am building a bike trike using a reliant axle and converting to discs most of this work is done. the suggestion is that i use 'thin' pads for golf mk2 these being 15mm. before i go out and buy some and poss get into a heated discussion at the car parts place, is 15mm the total thickness inc steel backing or is it just the 'pad' thickness? any help much appreciated. regards baz

[Manky Monkey]

I had no idea there was more than one thickness available to be honest Sir.
Oh, welcome to the forum by the way. 
Any thoughts you lot?

[tbone]

Overall thickness, friction material plus backing

[usermaatresetepenre]

hi
and thanks t tbone......time to go shopping!!!!!!!!!
baz

[haggis]

Also depends on what discs are to be fitted as there are 2 sizes, I think 9mm and 12mm. You want the thin ones