|As others have mentioned, worth it to use template if you already have wheels, but if you're looking to buy wheels that fit, might be a bit of a guessing game/gamble.
In my case, I was pretty confident my offsets and wheel spoke design would clear the kit, but ending up my wheel diameter was an issue... just putting on the rear 18x9.5 +38 Work Emotion D9R - the wheel barrel tapers in enough that the diameter would not even clear the top of the caliper (offset spoke clearance was fine). I didn't even attempt the front.
I put on my old Rota Boost 18x10 +35, and there was miles of clearance top and sides (rear - didn't get to front - but won't be an issue).
Now also working on fitting some different wheels
2+2=4; 2+0=2; 4>2 : 2+2 > 2+0.