19" Style 67's tire question

I'm running a square set up of 19x9.5 style 67's on my '03 M3. I'm switching the fronts back to 19x8. I have Nitto NT555 ZR - 275/30/19's on the back and what size would look good on the 19x8 fronts? I'm lowered on H&R coilovers.



Thanks for the help