Break Pad Question

My pads are looking quite thin these days on fronts and rears and I think I am ready for replacements....car (Meg250) has done nearly 28k now so its as to be expected.

I am wondering if anyone can advise me what the general thickness of a new pad would be so I can gauge the life left in the fitted pads....I expect the rears to have less meat on them than the fronts from new....

Thanks for your help!
 
if theres 1-2mm of pad material left then they need replacing

a new pad will have maybe 8-12mm
 
I reckon there's 5mm on front visible through wheel. Not checked inside pads. Car booked in at renault for a break check but I've no doubt they Will advise to change!