Laguna Silverstone Wheels Question

This might be a really stupid question, but will all Laguna Silverstone wheels be the same offset? Only asking as a set seems to be a lot of money but individually they are cheap.
 
I know they'll fit, and only after them as they still look like my speedlines. Might just have to buy a couple and hope for the best!
 
Thanks Lewjew, that is perfect. Kind of ruins my plan though! I'll just have to keep an eye out for a set at a decent price
 
I had a set of Laguna wheels, only tried them on the 200 once, but they seemed a little wider than my Speedlines..