Will this fit? (width, offset and tire size Qs)

[ill86]

Originally Posted by AZ FRS

I need a wider setup for traction, and going for a square setup.

Slick, -2 degrees up front seems like just a little bit over the ideal mark for track camber? What do you think?

FYI- There is no default "ideal track camber". It is a driver/team preference. 2 degrees isn't that much for a track application. FR-S or otherwise.

[jshadeck]

Tried to take a blind pic from under the car... Shitty pic but i think its better than nothing. I drew a red arrow to show the lip of the perch, these were taken from below/behind the front wheel. The rim lip is level with the perch height wise.





(18 9.5 +38 rim on front driver)

[Slick]

Originally Posted by AZ FRS

Slick, -2 degrees up front seems like just a little bit over the ideal mark for track camber? What do you think?

I am running -2.2 and will be running track events. This is also my daily driver but am not concerned, and as @ill86 mentioned it is really not that much camber.

To an extent, yes it is driver preference, but it is more about ideal tire wear and your driving behaviour.
Example, if you are running -3 camber and dropped but not doing autocross, corner carving or track days, you will just wear out the inside of your tires prematurely.

Even in my daily driving, I tend to take corners more at speed so the camber is welcome.

Originally Posted by AZ FRS

Also, why did you choose 18" rather than 17"?

For looks and track performance combined. If these were only track wheels, for sure I would only run 17x9 +35 RPF1's.
So I wanted a nice set of wheels and like the 18" size as it "fits" the car well in terms of looks. But since I went with 18" I made sure the wheels were not heavy at all and my tire/wheel combo is still 1/2 pound lighter per corner despite going up in size and much wider wheels and rubber.

Originally Posted by AZ FRS

At this point it seems you guys are saying this will fit square:
17or18x9 +35 255/40/17or18.

For sure, but you will need camber. It will poke out with 0 camber (stock).
Camber bolts are your friend, lowering springs or coilovers give you the extra camber you need while also providing stiffer springs (depending how well you choose).

[Slick]

Originally Posted by jshadeck

Tried to take a blind pic from under the car... Shitty pic but i think its better than nothing. I drew a red arrow to show the lip of the perch, these were taken from below/behind the front wheel. The rim lip is level with the perch height wise.

How much clearance do you have between the wheel/perch?

A quick way I used to measure it (cause it's really hard to read accurately off a measuring tape) is to try a variety of metric allen keys between the two pieces. That is of course if you don't already have measuring calipers.

I ended up with 8mm between rim and perch after camber bolts and alignment. Before camber bolts I had 12mm.

On an 18x9 +35 wheel.

[jshadeck]

Originally Posted by Slick

How much clearance do you have between the wheel/perch?

A quick way I used to measure it (cause it's really hard to read accurately off a measuring tape) is to try a variety of metric allen keys between the two pieces. That is of course if you don't already have measuring calipers.

I ended up with 8mm between rim and perch after camber bolts and alignment. Before camber bolts I had 12mm.

On an 18x9 +35 wheel.

Well let me try my brain quick, if u had 12mm clearance, subtract 3mm for my 38 offset, then subtract 6mm for my 9.5 (1/4" more inside lip) that leaves me with 3mm

[Slick]

Originally Posted by jshadeck

Well let me try my brain quick, if u had 12mm clearance, subtract 3mm for my 38 offset, then subtract 6mm for my 9.5 (1/4" more inside lip) that leaves me with 3mm

Depends on your camber settings though. How much front camber do you have? It looks like you have more than 3mm? But the math is right.

Btw, was looking at the pics thinking "the wheels look green? Is that just the flash?" Then I looked at your avatar. You should post a pic.

[JackSmiley]

Originally Posted by jshadeck

No... U said thats ur "current setup" i said thats inside the fender 7mm, the PURPOSED wheels u are considering would poke

The thing with my current set up, the fronts poke by a bit.

[jshadeck]

Originally Posted by Slick

Depends on your camber settings though. How much front camber do you have? It looks like you have more than 3mm? But the math is right.

Btw, was looking at the pics thinking "the wheels look green? Is that just the flash?" Then I looked at your avatar. You should post a pic.

Bone stock suspension, no camber changes yet

[Slick]

Originally Posted by jshadeck

Bone stock suspension, no camber changes yet

Attachment 37170
Attachment 37171

Wow, looks great.

[JackSmiley]

When can you say that its too much camber for a DD and backroads driving?

[jshadeck]

Originally Posted by Slick

Wow, looks great.

Thanks! Im hoping to get a pair of 8.5+44 to throw up front (square tires though) and eventually suspension, tho my budget took a hit as im buying a new house this month

[Slick]

Originally Posted by JackSmiley

When can you say that its too much camber for a DD and backroads driving?

Some would say there is no such thing as too much camber, lol.

But realistically for this purpose, -1 to -1.5 is a good camber setting for this car. Cars with softer suspension that lean alot can benefit from extra camber as it keeps the outer tires contact patch squarer to the pavement. With our cars low centre of gravity, it does not naturally lean as much, but additional camber will still give you more "stick".

So to answer your question, probably -2.5 or more is too much for a daily driver, unless you are trying to pull in an aggressive wheel/tire fitment with some camber. IMO

[JackSmiley]

Originally Posted by Slick

Some would say there is no such thing as too much camber, lol.

But realistically for this purpose, -1 to -1.5 is a good camber setting for this car. Cars with softer suspension that lean alot can benefit from extra camber as it keeps the outer tires contact patch squarer to the pavement. With our cars low centre of gravity, it does not naturally lean as much, but additional camber will still give you more "stick".

So to answer your question, probably -2.5 or more is too much for a daily driver, unless you are trying to pull in an aggressive wheel/tire fitment with some camber. IMO

Got it! I was thinking of doing -2 on all 4 corners.

[jshadeck]

Imho, "too much camber" is when the amount of camber > the amount of camber to benefit the handling of the car. I dont personally care for the look of an over cambered car, and would only run more than -1 if it improved the handling for that specific track/car. But thats just me.

For example, heres the most camber ive ever run



Was about -.6 i think, -2" springs, 19x8 +38 with 235 tires