18x9 18x11 tire size help!

[flash76]

have got some 18x9 front 18x11 rear +22 offset wheels to go on my fd, all i need is some tires now!
 
I have wider arches 20mm front 50mm rear, can anyone give me any advice on what size tires would be best?
 
I want to lower the car a bit and will roll or cut the arches if i need too.
 
any advice would be great!

[scratchies]

have got some 18x9 front 18x11 rear +22 offset wheels to go on my fd, all i need is some tires now!
 
I have wider arches 20mm front 50mm rear, can anyone give me any advice on what size tires would be best?
 
I want to lower the car a bit and will roll or cut the arches if i need too.
 
any advice would be great!

245 30 18 front   285 30 18 rear