SL500 wheel sizes
 

Hi guys,
I have just bought an '02 SL500 so i will be checking in here regularly and hopefully you guys won't mind me picking your brains !!
First question is this - I have a mate who has some real nice 18" AMG wheels up for grabs .. ( mine are standard 17's and need a little refurbing ) Both my front and rears are 255's but my mates wheels have 255 on the rear and 225 on the front ..... I think they are off a CLK or SLK maybe but can i use them on my SL ??
Many thanks in anticipation of your help and advise