Swapped out the original 500# 8x2.5" Ohlins springs for some 7" Eibachs with the same rate. Allows the perches to move up 1" for tire clearance. 

Figured I'd give these a shot

285/30/18 BFG R1, 265/35/18 595 RS-R, 275,35,18 R888

The 595s and BFGs run wide!!

2" more rubber on the R1s!!! 

Couple of pics

Lowered the front .5" too get an even 6" from door sill to ground front and rear.