CLK Alloy tyre sizes

[Kam]

Have managed to set some Lorinser alloys. They are 18" and the two for are 8" and the rear is 9". Please can some one advise what is the best size tyres to go for on these alloys to fit a 99/V CLK.
Will get some pictures of the car up on this site as soon as i can

 

[mergli]

Front should be 225/40 and rear 255/35

Cheers,
Adam.