Sponsored by The Tire Rack

[Breitling]

What is the current best choice in rims for getting to as square of a setup as possible without major body work.

Sure I'll roll fenders etc, but no flaring, cutting or widebody kits.

Would like to get as wide as possible tires on there, but I am not sure what those would be.

Thanks!

[pixelblue]

With a set of camber plates you can get 255 all around. You will need et 40 off sets on the wheels

[Breitling]

Did you mean something like the Dinan camber plates or something like the Vorshlag ones?

[91Kevin]

Originally Posted by pixelblue

With a set of camber plates you can get 255 all around. You will need et 40 off sets on the wheels

That all depends on the width, a 40mm offset on a x8 is going to be different than a 40mm offset on a x8.5, and getting camber plates is the first step but you also have to know what camber to run. I'm running about -2.5 in the front

I'd do enkei RPF-1s, they're kind of inexpensive, and the widest you can really run in the front is an 8.5, so if you want to do square (wheel wise) it'd be an 8.5 all the way around.

I ran Alufelgen CS7s (x8 front x9 rear) with a square 245/35 tire setup and that seemed to work fine for me.

[Breitling]

RPF-1s in an 18" x8.5 ET40 5x120 is what your thinking, do you think that would fit in the front?

[91Kevin]

Originally Posted by Breitling

RPF-1s in an 18" x8.5 ET40 5x120 is what your thinking, do you think that would fit in the front?

As we speak I have an 18x8.5 et 25 on the front of my 1 and I don't rub with nothing done to the fenders and GC coils spun all the way down.

yes, they will fit.

[Breitling]

Have a pic of that? Very interesting!

[91Kevin]

Originally Posted by Breitling

Have a pic of that? Very interesting!

sure do lol

[Eddy@ApexWheels]

ET40 is way too aggressive for the rear for a 255 to fit. It can't be done without major fender modification.

The photo shown above is with a narrow stretched street tires, the fit is not similar to a 255 tire which is meaty for an 8.5" wheel. With camber you can fit a lot up front, but you'll always be restricted in the rear.

You need a high offset wheel to stay in the fender in the rear, and then spacer out the front as needed for strut tube clearance, thus allowing the wheels to still be rotated front to rear as needed.

An ideal size would be 18x8.5" ET45. This clears the rear much better (vital for wide tire fitment), and most front tires would fit with just a 3mm spacer, but a 5mm spacer may be needed in some applications (AD08's and some r-compounds).

The ARC-8 wheel comes in ET45 after discussions with TC Kline that wanted that size. They run 245/35/18 Hoosier R6's front and rear on 18x8.5's and then use a 3mm spacer for strut tube clearance.

Obviously camber plates are needed for the front, and 2+ degrees will be needed for 255's. Fixed Dinan plates would not be enough. You'd want either Vorshlag or Ground-Control plates.

[91Kevin]

My rear tires are 245/35s, so they aren't really that narrow. I ran square 245/35s like I stated above with no problems on Alufelgens, but those are not square, so one of the best square setups I could think of were the RPF-1s. The arc 8s are great too, if they have an 18x8.5 et45 then that would probably be a better option, price as well as fitment-wise. I'm positive both are possible and will yield about the same results.

Basically, an 18x8.5 et 45 with square 245/35 18 tires is the best bet for a square set of wheels and tires for track use. et40 is just as doable depending on your ride height and camber settings, which on track, you will be running negative camber (probably about -2.5 front and about -1.5 rear)

[BrokenVert]

Originally Posted by 91Kevin

sure do lol

You have a 225 or 215 tire on that wheel...it makes it completely irrelevant to the conversation


I personally run a 245/40 square setup on a 17x8 et 40 wheel with a slight roll up front and nothing in the back.

If you have camber on your side in the front you can do a 255 square setup on an 8.5 et 40 wheel fairly easily.

[91Kevin]

Originally Posted by BrokenVert

You have a 225 or 215 tire on that wheel...it makes it completely irrelevant to the conversation


I personally run a 245/40 square setup on a 17x8 et 40 wheel with a slight roll up front and nothing in the back.

If you have camber on your side in the front you can do a 255 square setup on an 8.5 et 40 wheel fairly easily.

I was just trying to illustrate that the offsets that are possible on the 135i are only limited by tire size to a certain extent. et40 with a 215/40 would look stupidly sunk and would never have any chance of coming in contact with the fender, but a 245/35 would be considerably closer, but it'd still clear. Besides, I already gave my experience with wheels and tires that were relevant to the conversation and gave a possible route of action the OP could take in getting a square track setup.

[Breitling]

Thanks a lot guys, that helps very much.

91Kevin, I like that a lot for the street.

paintpro21, That is about perfect info I need to order what I want. Clearly it's going to be some suspension work, but that is pretty much what I'm going for. 245 or 255 all around would be awesome.

[fourtailpipes]

Originally Posted by paintpro21

ET40 is way too aggressive for the rear for a 255 to fit. It can't be done without major fender modification.

The photo shown above is with a narrow stretched street tires, the fit is not similar to a 255 tire which is meaty for an 8.5" wheel. With camber you can fit a lot up front, but you'll always be restricted in the rear.

You need a high offset wheel to stay in the fender in the rear, and then spacer out the front as needed for strut tube clearance, thus allowing the wheels to still be rotated front to rear as needed.

An ideal size would be 18x8.5" ET45. This clears the rear much better (vital for wide tire fitment), and most front tires would fit with just a 3mm spacer, but a 5mm spacer may be needed in some applications (AD08's and some r-compounds).

The ARC-8 wheel comes in ET45 after discussions with TC Kline that wanted that size. They run 245/35/18 Hoosier R6's front and rear on 18x8.5's and then use a 3mm spacer for strut tube clearance.

Obviously camber plates are needed for the front, and 2+ degrees will be needed for 255's. Fixed Dinan plates would not be enough. You'd want either Vorshlag or Ground-Control plates.

^^^that's about as comprehensive (and correct) an explanation as you're going to get. one thing i'd add is that i was able to get hankook RS-3 255/35-18 on the arc-8 wheel (18x8.5 et45mm) with no spacer. it's close to the strut but doesn't touch. even with a very wide 255 you should be able to get by with a 3mm spacer. i can't imagine needing more of a spacer unless you're low on coilovers and need the extra space to clear a perch.

regarding 40mm offset wheels: yes they will fit in the front, but you'll be too far outboard to fit well in the back. better to go with a higher offset and use a spacer in front if needed.

[Eddy@ApexWheels]

glad to hear you could fit a 255/35/18 RS-3 with no spacer. funny how some standard non-extreme summer tires in 235/40 were giving people issues. Either they don't know how close they can get and still be safe (too conservative), or the rim protector is massive on some tires.

[fboutlaw]

Second the: 18x8.5 et45 with 255/35-18 tires. It's the widest you can fit up front without some serious body work.

I have that size wheel/tire on my front with PSS tires and Vorshlag camber plates (no spacers). Some very minor dremeling was needed to the front bumper attachment in the wheel well, but now it fits fine at -2.5 deg camber with no rubbing.

I wouldn't recommend square unless you get adjustable camber in the front. Without it, the largest width tire you can fit in the front is 235/40-18, which is too little width to be useful in the rear. The cars simply have too much power for it.

[BrokenVert]

Originally Posted by fboutlaw

I wouldn't recommend square unless you get adjustable camber in the front. Without it, the largest width tire you can fit in the front is 235/40-18, which is too little width to be useful in the rear. The cars simply have too much power for it.

Does nobody read the thread before they post anymore?

I have a 245 upfront, no rubbing, stock camber. I said it 5 posts above yours

[Eddy@ApexWheels]

Originally Posted by BrokenVert

Does nobody read the thread before they post anymore?

I have a 245 upfront, no rubbing, stock camber. I said it 5 posts above yours

lists more details about it so people can better understand why it fits, as many members won't know what offset or tire allowed that. If you generalize then someone is going to buy 245's that clearly don't fit.

[BrokenVert]

Originally Posted by paintpro21

lists more details about it so people can better understand why it fits, as many members won't know what offset or tire allowed that. If you generalize then someone is going to buy 245's that clearly don't fit.

Again. I was specific in my earlier post. But I'll say it like I did 7 posts up.

17x8 et 40 with a square 245/40 R17

You can easily fit a 245 square setup on an 8 inch 40 offset wheel.

I didn't expect reading laziness on a wheel thread from you man.

[Eddy@ApexWheels]

Originally Posted by BrokenVert

Again. I was specific in my earlier post. But I'll say it like I did 7 posts up.

17x8 et 40 with a square 245/40 R17

You can easily fit a 245 square setup on an 8 inch 40 offset wheel.

I didn't expect reading laziness on a wheel thread from you man.

tire brand... model...