hi folks,ive had my car a week,and it came with grooved discs from the last owner,now my mate reckons theyve been put on back to front? if so is it too late to swap them back round if so? and could you plz show me pics of yours pls so i can double check cheers,

I wouldn't swap them as they'll be bedded in for the pads the way they are. You can fit them either way.

As MattB says, it can go either way. However, some discs manufacturers have specific directions for their grooves. With these sort of discs, their vents (as seen from the sides of the disc) are slanted to the direction of the grooves.

thanks for that guys,atleast thats saved me a job,cheers folks.