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I haven't seen any threads on the new ZM-23 wheel from Z1. I am seriously considering them for my 2012 G37S sedan, making the OEM duckfeet wheels my winter wheels.
Anyone running these wheels yet? Any feedback on them? Fitment suggestions?
I like the style, the price is good, and they are fairly lightweight. I'm looking to also get the wheels more flush with the fenders, and perhaps even squared so I can rotate.
I emailed Z1 about the wheels and their suggestion on fit, and received an interesting response:
"Unfortunately our Z1 wheels are a bit aggressive for most sedans. You would need to likely run some additional camber or even stretch a tire to fit these. I would be more inclined to suggest another wheel for a sedan fitment."
The photos projectpanda13 posted are very aggressive, to Z1's point. I am surprised that there is that much difference in wheel fit between a G37S coupe and sedan.
I am really out of my depth here, but I would think an inch wider wheel with 30mm less offset wouldn't be an issue. Maybe the issue is the 17mm reduction in backspace?
For sizing for our sedan from the choices would be 9.5" width and +15 offset. This is will have some poke still and some camber will be needed in the rear to look right.
I am running a 9.5" +15 255 in my front currently.
Got it, thanks. I see from the wheel calculator on this site that the issue is the offset, extending the fit out by 43mm. I'm going to pass on these wheels and keep looking,
I think I am going to go with Enkei TFR wheels. Enkei claims they are 19.85lbs a wheel for 18x9.5 +38, or 21.15lbs for 19x9.5 +35. That's only about 1-2 lbs more than RPF1 wheels, and I prefer the look of the TFRs.
The +38 offset on a 9.5 inch wide wheel extends the fit by 32mm on the front of a sport sedan. I am a bit surprised that will fit. It also is quite a bit wider of a tire. Thinking about it, I might go with a 19x8.5 +35. Decisions, decisions.......Then there is square vs staggered, but I am mostly likely going square so I can rotate the tires.
Agree with @projectpanda13 square 18x9.5 +35 is a great all around set up for the sedan.
Paired with a meaty 275/40 tire they give an aggressive stance, perform great, and tires will last longer thanks to 4 wheel rotations.
I ran that set up on the street and track without having to touch the fenders either. There's room upfront to go at least +30 and possibly more. Not soo much in rear though.
As for stagger vs square, that'll most likely come down to personally preference in looks, some people love wider rear tires, and driving style. If you want to keep the understeer relative to stock keep it staggered. If you want more of a neutral to oversteer setup go square. This changes the cars characteristics pretty substantially IMO. More so when 7/10ths + but even when driving around town.
Traction on a square set up is reduced in the rear relative to the front when compared to the factory set up. Meaning the backend will come around quicker and left handers from a stoplight can get a little bit more fun .
If you go aggressive with a 275 square tire set up, I do want to make you aware the front end will track with the road or tramline a lot more than the factory 225/50's did. A good compromise would be a 9.5 wheel wearing a 245/45/18 or 245/40/19 square tire set up. Tire compounds and aggressive alignments aside this will have no issues with road tracking.
Another option is go staggered with the tires only at 245 front 275 rear and keep the square 9.5 +35 wheel. This will give you the ability to play around with tire sizes in the future. I prefer square setups.
If you are wanting to keep it a little more conservative and want a bit lighter wheel go with a 8.5 width wheel, but I would run at least a +30 offset. I previously ran a 18x8.5 +35 on 245/45/18 square setup and at stock height the wheels sat too far inboard for my liking. It would've been even worse once lowered.
I think I am going to go with Enkei TFR wheels. Enkei claims they are 19.85lbs a wheel for 18x9.5 +38, or 21.15lbs for 19x9.5 +35. That's only about 1-2 lbs more than RPF1 wheels, and I prefer the look of the TFRs.
The +38 offset on a 9.5 inch wide wheel extends the fit by 32mm on the front of a sport sedan. I am a bit surprised that will fit. It also is quite a bit wider of a tire. Thinking about it, I might go with a 19x8.5 +35. Decisions, decisions.......Then there is square vs staggered, but I am mostly likely going square so I can rotate the tires.
keep in mind that you are using the stock wheel setup as your reference and how the the stock setup sits relative to the fender (more inward / sunken in)
the 32mm outward position allows for a flush fitment where the wheels are closer to the fenders.
Thanks guys, very helpful information and videos. I was starting to think that I needed to figure out the handling impacts of square vs staggered, and more oversteer is a good thing, so square it is.
I think a 245 tire would look a bit stretched on a 9.5 inch rim. The tire calculator shows that a 265/40 is closer in diameter to the stock sizes than a 275/40, and would have slightly less trammeling....
A quick follow-up, after looking at the square sticky and photos of various fits, the 18/19x9.5 +35 fit looks perfect for cars that a lowered. At the stock ride height it will poke. 18x8.5 +35 looks better to my eye at stock ride height. While I like the lowered look, it isn't something I am going to do since my car gets driven in winter, gets driven by the wife, and I am very happy with the performance and ride of the stock S suspension.
09-14-2022 | 07:43 PM
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