First fill out your profile with your modifications. Fish for the day. You can find almost all of this information you just won't find it for your specific wheels. Width and offset are all that really matter. If somebody tells you some offset will fit and they don't know how wide your wheels are just walk away. Ok some websites that will help you out. Tire size calculator Honestly 19's look weird to me on 300zx's but offset wise you are going to need a bit of work. I ran similar sizes to you on an 18 and here is my insight 18x9.5 +31 (has an 8mm spacer to be right which would put it at +23) 18x10.5 +43 (about right for me and fitting 275 and 295 tires without requiring a pull) So comparing my setup to yours by putting it into the offset calculator you would be about here. (18x9.5 +23) vs (19x9.0 at +47) Your wheels would be sunk in by 30mm (18x10.5 +43) vs (19" x 10.0 +30mm) Your wheels would EXTEND an extra 7mm So for the front you would probably want at least a 20mm spacer. Ichiba is one I like with the built in studs. For the rear you will need it rolled and possibly pulled (I think pulling ruins the lines unless done right). For that size rubber and depending on how low you want to go and if you want to run normal camber or crazy super hella flush camber. If you are lowering at the minimum you will need 300degree camber kit up front or Front upper control arms from Powertrix, If you do get the front upper control arms you will also need front tension rods. For the rear at minimum you would need the rear upper control arms from either SPL parts or Powertrix if you are lowered. Tire wise from what I see those are less than ideal. Front 225/50ZR-16 vs 245/40/19 You are 7.5 percent off from stock Rear 245/45ZR-16 vs 275/35/19 You are 7.7 percent off from stock. Your speedo is going to be at 60 when you are really travelling 65 mph. Me sitting on 255/40/18 front and 275/35/18 rear partial roll in the rear. .
Same front setup but 295/30/19 in the rear and lowered a bit more. Can't find any better shots.
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