Originally Posted by TexasChuck

Lots of good info and opinions here. So.. my 2 cents.... H&R bolt on (not the loose stud one) worked great on my 2012 (red also) with 18" stock, 20mm front/25mm rear. When I got ready to trade I removed them, and used them on my new 2014 w/19" Rays, Sports Pkg, with no issues at all.
Go to H&R website and enter your car information. Be sure to read the notes (click on) to be sure of fit or call their 1-800 #. The 20/25s look great and fit perfectly. Sorry I don't have the part #s anymore.
I didn't know anything about all this either at first, but it's not hard.
Cheers,
Chuck

Originally Posted by Bonzo

So I finally took the plunge on this yesterday. Here's my story.

Since everyone on here seems to have differing opinions it was hard to know what size to get. I decided that using 10 or 15's was not something I wanted to tackle or pay for (since you have to remove the brakes and the hub and swap out studs) . So it was either 20 or 25. Since you can't return them after putting them on, and they cost $150, I decided to eat a little freight and only order 2. I had both of them put on the same side of the car so I could see what 20 looked like up front and in back.

Here's what I've determined based on what I have on my car, with stock tires and sport wheels, stock camber alignment. All observations are from looking straight down from the top of the outside fender.

FRONT
15 would be about 1/4" inset
20 is flush
25 would poke about 1/4"

BACK
15 would be flush
20 pokes about 1/4"
25 would poke about 1/2"

I am not a fan of poke. Poke to me reminds me of 2 things, 4 x 4 trucks (which look good with poke), and ricers with Honda Civics with ridiculously offset wheels (which looks stupid). I prefer flush. Knowing this, I LOVE the 20's on the front. They are perfectly flush. BUT, 20's on the back are slightly too much. I would prefer 15's better. Anyone liking the 25's on back likes poke. So if you want flush, 20 front and 15 back is the way to go.

So I had a big decision to make; do I buy 2 more 15's for the back and go through the hassle and cost, or do I just stick with 20's even though they poke slightly. I decided to just stay with 20's. I'm 95% happy with that look. It's not perfect for me, but I just don't want to screw with the other kind, or pay for it.

Pictures up next. (Just uploaded the pics. For some reason they are now darker and not as clear as they are as originals. Sorry)

Originally Posted by Zipper 104

Today I did a test install of one 20mm spacer on the left rear of my Z to see if I would run 20s or 25s. The plan was not to get too fancy because they were coming right back off again. We dropped the car back on the ground, and I drove it back and forth a few times, braking at each end to get the car to settle.
I took some pics but they were on a BB and were so atrocious I haven't posted them. My pics look JUST like these. There is no way I could go to 25s on the rear. I bought one pair of 20s, now I'll get a second pair.

With reference to my above post;
There were absolutely NO issues with the spacer mounting lugs extending past the face of the spacer, so cutout room on the wheel is of no consequence. (the stock studs did though) The room is there, it's not needed, at least not for the lugs. I will still have to look at the front wheels again.

104