Wheel sizing and offset advice
 

So I'm currently looking to purchase Work CR Kiwami's and am wondering what sizes and offsets I should choose for my wheels between these options below. I'm going to be lowered on H&R Springs and looking for a nice flush/little poke with stock suspension arms

Fronts
19x10.5+22
19x10.5+32
19x9.5+15

Rear:
19x11+18
19x10.5+12

What size tires are you trying to run and do you have adjustable suspension arms? (i.e. stretched/meaty/etc.)

255/35/19 and 285/35/19. Not exactly sure about sidewalls but I think 35 is fine? No adjustable arms just stock. I like flat and stretched tyres not a fan of bulging meat at all

I have 9.5 +25 Fronts with 275/35s, and my wheels / tires poke out. 10.5 +22 in the rear with 285/35s theres some room left, so a +18 would probably fit really well. Also if youre going 9.5s up front go wider than 255s. Z definitly comes to life with wide tires at all 4 corners. Im limited by 2 racing series i plan to run or i would have gone wider rear. If you only plan on streeting your car or the occasional track day, go 295/305. May as well make use of the wide wheels right?

10.5 +12 and 11 +18 stick out the same according to the offset calculator. The 10.5 has more inside clearance but thats not relevant since the Z has massive clearance anyways

Get whichever one is more concave, if there's a difference

fronts i'd go for 9.5 +15 but i'm not sure if thats trouble free for a spring/shock combo

pretty much the standard sizing for aftermarket wheels is 9.5 +22 and 10.5 +12 with 265 and 305 tires

dig through the multitude of wheel threads to find a setup you like and copy it