I fitted my new AP 6pots & 355mm discs yeaterday but found that the of the 18" P1 wheels i have. I thought this kit was supposed the fit ok under these wheels? I solved the problem by fitting 3mm wheel spacers but it's tight, there's 2mm gap between the caliper and the wheel spokes!!

 

2mm is loads of space, i used to have less than 1mm gap with my classic, st2's, and godspeed 335mm kit...!!
Never once did it rub!!

 

I was just worried about using the 3mm spacers more than anything?