Looking for flush fitment

[Leonardo]

Originally Posted by FineVisionz

What I don't get is how is this car flush, with 17x8 +35 wheels
https://www.fitmentindustries.com/wh...d1-av20-eibach

While this car with 18x9.5+35 is also flush,
https://www.fitmentindustries.com/wh...dspeed-project

Many different things going on. Different suspension, amount of drop, camber settings, and tire size. (and of course wheel size)

A 18x9.5 +35 wheel will poke 19+mm more than a 17x8+35. Additionally, a 245/35/18 is stockish diameter. A 235/45/17 is 2.8% bigger in diameter than OEM. (almost to the suggested limit of + or - 3% different than OEM.

OEM 24.6" diameter
245/35/18 24.8" diameter
235/45/17 25.3" diameter
245/40/18 25.7" diameter - 4.5% larger!
Judging from the photo, the blue car is running Sportline springs. And, my educated guess is that they are good for -2.2 or so rear camber. This amount of camber makes the rear look good.

But, unlike in the rear, lowering will not add a usable amount of camber in the front. You will need camber bolts. (or some way to add camber in the front - like the camber plates on the other car) This is why there is no good pic of the front of the blue car.

The car with coilovers has -2.0 or more front camber to look like it does. it also is dropped more and has Rear LCA.

FYI: Adding rear (natural) camber by lowering may not be even side to side. After I installed 1" drop springs my camber was -1.8 and -2.2 left and right.
To correct this discrepancy, (even it out) I installed LCA.

I would suggest a 235/40 or 245/35 over a 245/40.

[FineVisionz]

Originally Posted by Leonardo

Many different things going on. Different suspension, amount of drop, camber settings, and tire size. (and of course wheel size)

A 18x9.5 +35 wheel will poke 19+mm more than a 17x8+35. Additionally, a 245/35/18 is stockish diameter. A 235/45/17 is 2.8% bigger in diameter than OEM. (almost to the suggested limit of + or - 3% different than OEM.

OEM 24.6" diameter
245/35/18 24.8" diameter
235/45/17 25.3" diameter
245/40/18 25.7" diameter - 4.5% larger!
Judging from the photo, the blue car is running Sportline springs. And, my educated guess is that they are good for -2.2 or so rear camber. This amount of camber makes the rear look good.

But, unlike in the rear, lowering will not add a usable amount of camber in the front. You will need camber bolts. (or some way to add camber in the front - like the camber plates on the other car) This is why there is no good pic of the front of the blue car.

The car with coilovers has -2.0 or more front camber to look like it does. it also is dropped more and has Rear LCA.

FYI: Adding rear (natural) camber by lowering may not be even side to side. After I installed 1" drop springs my camber was -1.8 and -2.2 left and right.
To correct this discrepancy, (even it out) I installed LCA.

I would suggest a 235/40 or 245/35 over a 245/40.

I guess what i'm still confused on is how does a wheel that is 1.5 inches skinnier with the same offset still produce flush fitment?

[Will BRZ]

Originally Posted by Leonardo

Many different things going on. Different suspension, amount of drop, camber settings, and tire size. (and of course wheel size)

A 18x9.5 +35 wheel will poke 19+mm more than a 17x8+35. Additionally, a 245/35/18 is stockish diameter. A 235/45/17 is 2.8% bigger in diameter than OEM. (almost to the suggested limit of + or - 3% different than OEM.

OEM 24.6" diameter
245/35/18 24.8" diameter
235/45/17 25.3" diameter
245/40/18 25.7" diameter - 4.5% larger!
Judging from the photo, the blue car is running Sportline springs. And, my educated guess is that they are good for -2.2 or so rear camber. This amount of camber makes the rear look good.

But, unlike in the rear, lowering will not add a usable amount of camber in the front. You will need camber bolts. (or some way to add camber in the front - like the camber plates on the other car) This is why there is no good pic of the front of the blue car.

The car with coilovers has -2.0 or more front camber to look like it does. it also is dropped more and has Rear LCA.

FYI: Adding rear (natural) camber by lowering may not be even side to side. After I installed 1" drop springs my camber was -1.8 and -2.2 left and right.
To correct this discrepancy, (even it out) I installed LCA.

I would suggest a 235/40 or 245/35 over a 245/40.

Wow great information. Honestly never knew a 245/35/18 was so similar to stock diameter. Must be a great size tire for like an 18x8.5 wheel or something for our cars considering the power. Seems like that’s the sweet spot for 18s. Suspension and fitment has always been my weak spot when it comes to cars lmao so thanks for sharing bro

[Leonardo]

Originally Posted by FineVisionz

I guess what i'm still confused on is how does a wheel that is 1.5 inches skinnier with the same offset still produce flush fitment?

IMO, the answer is a combo of: camber, suspension parts installed, camera angle, ride height, tire size, and a wildly different perception by each owner of what flush Actually is.

All these things add up to, two different points of view.

I had springs /spacers, but then I installed these parts. They CHANGED the car adding adjustment where there was none before. This changed my perception of flush. I also have tried 5 different thickness of spacers, multiple different staggered and square wheel setups, and four different ride heights. (all the ride heights were very conservative though)

[FineVisionz]

Originally Posted by Leonardo

IMO, the answer is a combo of: camber, suspension parts installed, camera angle, ride height, tire size, and a wildly different perception by each owner of what flush Actually is.

All these things add up to, two different points of view.

I had springs /spacers, but then I installed these parts. They CHANGED the car adding adjustment where there was none before. This changed my perception of flush. I also have tried 5 different thickness of spacers, multiple different staggered and square wheel setups, and four different ride heights. (all the ride heights were very conservative though)

This makes sense. I guess my search for flush fitment.

Just for reference, this is my opinion of flush fitment...

I just don't want to run spacers.

[Shizuka]

Originally Posted by FineVisionz

This makes sense. I guess my search for flush fitment.

Just for reference, this is my opinion of flush fitment...

I just don't want to run spacers.

Bro just run 18x9.5 +38 with coilovers and drop about 2". Don't need LCA or camber plates as long as your coils are adjustable.

Problem solved...

[Leonardo]

Originally Posted by FineVisionz

This makes sense. I guess my search for flush fitment.

Just for reference, this is my opinion of flush fitment...

I just don't want to run spacers.

Spacers are great for anyone that wants to make a wheel flush that doesn't come in an offset that is flush. They are also great for making wheels fit after installing a BBK with flat calipers.

I'm running 18x9+42 square with 12mm front and 15 mm rear slip spacers. making the offsets +30 front & +27 rear.

The 18x9 was only available in +42.



Additionally, spacers are cool cause you can change them.
First I thought a 10mm was going to work for the rear, but then went 12mm, and finally settled on 15mm.

I have hubcentric single bolt pattern spacers that are the same diameter as my brake rotor hub. Once you install extended studs, they really are almost part of the car. I've never had any problems.

[FineVisionz]

Originally Posted by Shizuka

Bro just run 18x9.5 +38 with coilovers and drop about 2". Don't need LCA or camber plates as long as your coils are adjustable.

Problem solved...

I'm mean... Ok, lol. The wheels I want are 18x9.5 +38 and the flex z coilovers I have are adjustable

[EAGLE5]

Originally Posted by JD001

I was contemplating new wheels to improve the look/stance...as a stopgap I installed 20mm/25mm spacers. And, I couldn't believe the difference they've made to the car.. stopped looking for new wheels.

What did the spacers do to your handling? I've been thinking of them since i have the extended lugs to install when I redo all my brakes. I want the rear more planted under power.

[JD001]

Originally Posted by jsimon7777

What did the spacers do to your handling? I've been thinking of them since i have the extended lugs to install when I redo all my brakes. I want the rear more planted under power.

I had the car dropped on Eibach Sportlines at the same time.. the drop in height was more of note. Hadn't messed with the front camber but had done the tracking at the same time... later on I went for the front camber bolts, what a difference they made!! Car was keener to turn and very pointy.. love it..


A few months back I had the STI Group N engine and transmission mounts installed which has further enhanced the lock down feel at the front end. I must change my tyres but can't make up my mind, go all out for a summer compound or compromise.

[Will BRZ]

Originally Posted by JD001

I had the car dropped on Eibach Sportlines at the same time.. the drop in height was more of note. Hadn't messed with the front camber but had done the tracking at the same time... later on I went for the front camber bolts, what a difference they made!! Car was keener to turn and very pointy.. love it..


A few months back I had the STI Group N engine and transmission mounts installed which has further enhanced the lock down feel at the front end. I must change my tyres but can't make up my mind, go all out for a summer compound or compromise.

Do you have pictures of that setup? Don’t think I’d run it but very interested in seeing it lol

[JD001]

Originally Posted by Will BRZ

Do you have pictures of that setup? Don’t think I’d run it but very interested in seeing it lol

Here you go. I have posted photos elsewhere on this forum but can't find them...

[Will BRZ]

Originally Posted by JD001

Here you go. I have posted photos elsewhere on this forum but can't find them...

Damn that looks pretty good

[Leonardo]

I had 18x8 +45 wheels and read that 18x8 +35 was flush, so I installed a 10mm spacer. (and was disappointed) IMO it was not flush. So then went to a 15mm. Then a +25mm bolt on. Essentially making the front wheels 18x8 +20. IMO, this is flush. (you could go 18x8 +15 in the back even)

Anyway, I have taken my wheels on and off probably like 100 times... I'm on my 3rd set of studs and 5ths set of lug nuts. I hacksawed the extended studs to be able to put the bolt on spacers. Then ended up removing the shaved studs and replacing them with fully extended studs. I have also tried a few different camber bolts and variations. top only, bottom only, both holes, etc.

I have learned a lot about the car and what will fit on it. My suggestions are based on my own experiences with my car and from what other members have posted.

(Part of the reason for all the parts above: I Wanted to know first hand about the installation process, how they change the car, and how they make wheels fit)