OEM coupes have wider rear wheels than the front by design. When rotating tires on a coupe you cannot swap front to back because of the width difference. You can only rotate left to right.

OEM sedans have the same width wheels in front and back. Rotating tires is much easier to control even tire wear, back to front and/or left to right.

When moving coupe wheels to a sedan, you have two basic options
1. Move all four, front to front, rear to rear, creating the agressive rear look because the rear rims are wider than the front. Tire size is important, might stick out, rolling fenders to be considered, tire rotation options limited. Basically everything you are experiencing.

2. Get two pairs of front coupe wheels (4 total wheels) and put them on all four corners of your sedan. Wheel size is now the same at all four corners. If you use same tire size, then rotation is simple like OEM design. But you lose the agressive wide rear look. For a muted agressive look, still use all four coupe front wheels (all same width) but use slightly wider tires on the rear of the sedan.

 

Just lower it more and it will tuck!

 

I don't want to lower cause it will cause negative camber and uneven wear and drag, and look like my neighbors crx.

 

:/.

 

^^ I thought you'd have more to add.

azt: don't over-analyze, just put the correct-size tires on and you'll be fine.

 

You can lower your car 2" with ease, and not have any issues (get an alignment). It will not 'drag'...

 

Yeah, im going to try that so im going to go 245/40... 245 should keep the sidewall flush to the rim. Anything less I would assume would be stretching and anything more would be wide. If that doesn't work I'll trade for 18" rays that are all the same size. That should be fine. I wish there was a computer program or something in which I could try these things before I buy and it would let me know if they would rub over bumps etc. I like trial and error not buy it and error. Man I thought this would be an easy job...

 

I'm running 245/40/19's on the coupe 19's dropped 1" all around and have no rubbing anywhere. Had 245/35 up front but didn't like the look or the ride so went with 245/40.

I was thinking about 255/40 in the rear but after looking at your pics, will probably stay with the 245's.

I thought about going 255/35 in the rear but here's my dilemma. I want to keep the diameter of the tires as close to each other as possible (F/R). That's why I was pondering the 255/40's. These are the diameters of each combination:
245/40/19 26.7"
255/40/19 27.0"
255/35/19 26.0"

Therefore the 255/40's were closer in diameter to the fronts than the 255/35's. Plus I'd get a better ride with the taller sidewalls.

So after all that, I'm going with 245/40 Vredestein on the rear when the Falkens wear out. They run a little wider than most tires so they should look good.

Here's how my back end looked before the HKS:



Here's how it looks now:

 

If you ever need a fender roll I do fender rolling.

I am located in Brooklyn N.Y

I will be fender rolling again in January.

My Email is nyfelix87@gmail.com or you can find me on g35nyc.com

-Felix.

 

lol yeah, only theres nothing to add, doesn't really leave himself with many options.

Lower More
Increase camber
Smaller tire

Basically all he can do is run a smaller tire since he doesn't want to do either of the other 2.

 

I would never advise doing this.
It seriously weakens the seat area for the lugnut.

I have seen wheels first hand that have broken out the seat area.
It ain't pretty.

 

^ I totally understand the concern, but I used to work for a wheel repair shop called Alberta wheel. I have personally adjusted back spacing on more than 20 wheel sets while i was there alone. Not 1 recall. Most of the clientel only does it for race applications, so these are hard used machines.

Its deffenitely not for everyone, I agree though.

 

The car comes with -.5 degrees of camber and i think up to -1 is within OEM spec. Adding negative camber is not going to result in excessive uneven wear, it will be very very minimal, it's the toe you need to worry about.

I really think we need a sticky on tire wear and what it really is a result from since there is a lot of misconception about it. Shoot, that's what I thought as well but if you're getting uneven wear, and depending on the degree, the tires can be flipped.

 

They can be flipped as long as the front and the back are the same size. But I believe the coupe's 19" rear wheels are staggered. In which case they cannot effectively be switched.

 

Not the way I'm talking about flipping it. You would do it side to side, which is what I'm doing for my car. I have 235/35's in the rear and 225/35's up front.

You take the tire from the left side and put it on the wheel on the right side and the tire on the left side and put it on the rim on the right side.

What you are describing is rotating the entire wheels and tires. I'm talking about leaving the rims in place and just swapping the tires side to side.