[Benandluna]

I like the stock look and the rims I want aren't. What do you lose in terms of performance? I assume the rwd staggered set up is optimal

[Transfer]

I'm assuming you're looking at 235 width tires all around? You really should be thinking of going up to 255 or 265 in the rear if you're modded stage 2.

[Benandluna]

Originally Posted by Transfer

I'm assuming you're looking at 235 width tires all around? You really should be thinking of going up to 255 or 265 in the rear if you're modded stage 2.

So far with stock set up with 245 in the back The tires do just fine, minus from a dead stop. though it isnt like i am dragging every day. I assume with better than stock tires the rear would hold up even better?

[DanG]

Originally Posted by Benandluna

I like the stock look and the rims I want aren't. What do you lose in terms of performance? I assume the rwd staggered set up is optimal

Actually a square setup gives you a more balanced handling and reduces understeer. I bought a square setup for my M235i.

[Benandluna]

Originally Posted by DanG

Actually a square setup gives you a more balanced handling and reduces understeer. I bought a square setup for my M235i.

Interesting. it seems like most people only use square during winter?

[Anthony235]

Originally Posted by Benandluna

Interesting. it seems like most people only use square during winter?

I think the people that do it during winter only do it more for economical reasons. They also tend to do a very conservative square setup (235 width).

Most that do it for a performance aspect tend to go 255 square.

[Benandluna]

Originally Posted by Anthony235

I think the people that do it during winter only do it more for economical reasons. They also tend to do a very conservative square setup (235 width).

Most that do it for a performance aspect tend to go 255 square.

That would be a 9.5 rim right?

[mibikin]

Originally Posted by Benandluna

That would be a 9.5 rim right?

8.5inch rim generally for 255 square and you need to dial in camber up front. About 2 degrees from what I've seen around the forum.

[Benandluna]

Originally Posted by mibikin

8.5inch rim generally for 255 square and you need to dial in camber up front. About 2 degrees from what I've seen around the forum.

I assume that's because of the front rub?

I really don't want to have to deal with camber adjustment

[DanG]

Originally Posted by Benandluna

Interesting. it seems like most people only use square during winter?

If you talk to the track crowd, they all prefer a square setup.

[mibikin]

Originally Posted by Benandluna

I assume that's because of the front rub?

I really don't want to have to deal with camber adjustment

With no camber adjustment the most you can do is 235 square

[Anthony235]

Originally Posted by Benandluna

That would be a 9.5 rim right?

Most do a 8.5 or 9".

My setup is 9.5".

[Thadez]

So I need to run 19x8.5 35et Square set up. Wheels I want only come in square set up. I am driving a Stock Car- X drive.

What tires can I run, so I don't have to make any adjustments to my car what so ever?

225/35/19
225/40/19
235/35/19
Will these work/ any other sizes?

Second question, can I run any staggered tires on the same size rims?
If so, what would I put on the back. I am open to suggestions. UT please keep it simple- I dont want to make any mods.

Thanks so much for the help!

[XutvJet]

Originally Posted by mibikin

With no camber adjustment the most you can do is 235 square

Not necessarily true. There's a guy on here that had BMW inadvertently mount a 245/35R 18 on the stock 7.5" wide ET45 front rim and he drove on it for well over a year. http://www.2addicts.com/forums/showthread.php?t=1352752

This means you can in fact run a 245 on the front assuming you get the offsets just right. I'll be running a set of 18X8ET43 rims here soon. The rims sit the exact distance from the front strut as the OEM 18X7.5 ET45 (approximately 10mm from the strut). Considering the distance and the linked thread, I should have no issues running a 245/35R18 square setup which IMO, is ideal for this car on the street.

The issue most guys run into with running wider tires in the front is related to the offsets and wheel widths they're choosing, 18X8.5 ET35 being the most common. These wheels sit within a few MM of the strut thus the tire overlap can rub the strut. That's why most run 225/40R18 (stretched) without suspension modifications. To run wider than 18X8 rims and wider than 225/40R18 tires requires some sort of camber manipulation in most all cases.

[mdputnam]

Originally Posted by Anthony235

I think the people that do it during winter only do it more for economical reasons. They also tend to do a very conservative square setup (235 width).

Most that do it for a performance aspect tend to go 255 square.

I bought Anthony's rear stock rims 8x18 ET52 (thanks Anthony!) and put them on the front with Michelin Pilot Super Sport 245/35R18s and 12.5mm spacers. As far as handling, this setup slightly delays the onset of understeer as you approach the limit. More importantly to me, since this isn't my track car, it provides a significant improvement in tire longevity because, with the stock alignment, the rear tires tend to wear on the inside and the front tires tend to wear on the outside.

[varkdriver]

I am planning on doing a 245 square setup as well using stock 8/18/et52 rears on the front. I have both 10 and 12mm spacers I can play with for clearance.

Can you tell me how much clearance you have on the strut using 12.5 spacers?

How does it look on the front? A picture or two would be great!

Thanks in advance.

[mdputnam]

Originally Posted by varkdriver

I am planning on doing a 245 square setup as well using stock 8/18/et52 rears on the front. I have both 10 and 12mm spacers I can play with for clearance.
Can you tell me how much clearance you have on the strut using 12.5 spacers?
How does it look on the front? A picture or two would be great!
Thanks in advance.

As far as I can tell, with a tape measure, there is no difference in the clearance to the strut. Willtheyfit.com says the inset difference is less than 1 mm. I forgot to mention that my fenders are rolled. I'm not sure if that is necessary, but it is very close to flush on the outside. Since you can purchase a fender roller for $50 on ebay it is cheap insurance and easy to do on our cars.

[XutvJet]

Keep in mind that the wheels will go into negative camber on the upward motion. If you're at the stock ride height, there shouldn't be any issues.

[Liquidpaper]

Originally Posted by XutvJet

Keep in mind that the wheels will go into negative camber on the upward motion. If you're at the stock ride height, there shouldn't be any issues.

Only on the rear multi-link. The front McPherson is completely static.

[mdputnam]

Originally Posted by XutvJet

Keep in mind that the wheels will go into negative camber on the upward motion. If you're at the stock ride height, there shouldn't be any issues.

Originally Posted by Liquidpaper

The front McPherson is completely static.

The wheel will increase in negative camber until the lower arm reaches full lateral extension, just as the top of the wheel is nearing the wheel well arch, then it starts loosing negative camber.

And on a M5 BMW chassis simulator watch the wheel camber change to positive as the chassis rolls:

[Liquidpaper]

Originally Posted by mdputnam

The wheel will increase in negative camber until the lower arm reaches full lateral extension, just as top of the wheel is nearing the wheel well arch, then it starts loosing negative camber.

And on a M5 BMW chassis simulator watch the wheel camber change to positive as the chassis rolls:

I have been educated. Thank you sir.

[Pparana]

Originally Posted by mdputnam

The wheel will increase in negative camber until the lower arm reaches full lateral extension, just as the top of the wheel is nearing the wheel well arch, then it starts loosing negative camber.

And on a M5 BMW chassis simulator watch the wheel camber change to positive as the chassis rolls:

Video is great at showing slip angle.