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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > wheel setup: staggered vs. square



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      08-20-2013, 07:45 AM   #1
cyclicoyster
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wheel setup: staggered vs. square

Hey guys, I'll be ready to make the leap from my stock wheels to aftermarket early next year. My e90 came with a staggered set up from factory. My question is, what if I go with a square set up? I don't think that it would mess anything up, but I want to keep that fat tire look on the rear. I know there's a lot of you that have done this already. Can anyone recommend square or staggered setups for 18" wheels?
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      08-20-2013, 10:31 AM   #2
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I would go 18x8.5 all around. I plan on doing that or 18x9.5
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      08-20-2013, 10:36 AM   #3
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I went staggered on my xi. I had the factory staggered sport package so I went with the same tire sizes but an 8 inch front rim and 9.5 inch rear rim. I like the look of a wider rear rim as well.
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      08-20-2013, 11:04 AM   #4
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21x16 square should be best.
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      08-20-2013, 11:11 AM   #5
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Square setups are great. The car behaves very neutral. I don't know if you are asking if square is ok or what the difference in handling would entail. Could you elaborate a little bit more on your question?

-Mike
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      08-20-2013, 11:35 AM   #6
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I run a square set up on 18 x 8.5's. The tire size is 235/40 - 18, which gets closest to the stock tire circumference of the 17" sport suspension set up.
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      08-20-2013, 11:46 AM   #7
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Quote:
Originally Posted by HP Autosport View Post
Square setups are great. The car behaves very neutral. I don't know if you are asking if square is ok or what the difference in handling would entail. Could you elaborate a little bit more on your question?

-Mike
Both actually, since the car came with a staggered setup. I like the idea that I would be able to rotate my tires with a square set up. But I like the 255 tire on the rear, looks good to me. Can I just run 18x8.5's all around, and keep the stock ratio of (225/45 front) and (255/40 rear) for the tires? My car has the sport suspension from factory so the clearance on the wheel well is a little less than a normal car.
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      08-20-2013, 11:55 AM   #8
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Quote:
Originally Posted by cyclicoyster View Post
Both actually, since the car came with a staggered setup. I like the idea that I would be able to rotate my tires with a square set up. But I like the 255 tire on the rear, looks good to me. Can I just run 18x8.5's all around, and keep the stock ratio of (225/45 front) and (255/40 rear) for the tires? My car has the sport suspension from factory so the clearance on the wheel well is a little less than a normal car.
You can fit a 255 up front if you so desire. Just need to roll the fenders. I had 18x9.5 up front running 255 and no rubbing. 8.5 you will easily get away with.

-Mike
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      08-20-2013, 12:21 PM   #9
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Quote:
Originally Posted by Amer328i View Post
I would go 18x8.5 all around. I plan on doing that or 18x9.5
Thanks to you and Mike. I think I will go with 18x8.5 all around, but I'll keep that 255 on the rear
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      08-20-2013, 12:54 PM   #10
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Definitely go with 9.5 all around. 8.5 is a little too skinny, and if you want some stretch go with 255's at most. If you want to go with 8.5 235 is a good size with some stretch. If you don't want stretch bump it up to; for 9.5's 265 and 8.5's 245. Oh and this is with a 35 tire wall all around which is pretty skinny.
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      08-20-2013, 01:01 PM   #11
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The easiest, most neutral, cheapest, lightest, and most comfortable setup would be something like 18x8.5 all around with x/40/18 non-runflat tires. Then you can rotate them and get a ton of life out of the setup without having to buy new stuff.

I went wider in the rear because I'm putting down about 400hp/500tq and the wider rears give me a hair more traction on launches but in hindsight I would have gone a square setup.
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      08-20-2013, 01:25 PM   #12
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Quote:
Originally Posted by cyclicoyster View Post
Both actually, since the car came with a staggered setup. I like the idea that I would be able to rotate my tires with a square set up. But I like the 255 tire on the rear, looks good to me. Can I just run 18x8.5's all around, and keep the stock ratio of (225/45 front) and (255/40 rear) for the tires? My car has the sport suspension from factory so the clearance on the wheel well is a little less than a normal car.
Just curious...If you want to run 8.5's all around. How can you rotate the tires if you're planning on using 225 front & 255 rear tires?
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      08-20-2013, 01:56 PM   #13
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I don't think you can rotate because the outer diameters of the tires will be different due to different rim sizes.

You should post this in the tire section where more experts on this will give you feedback.
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      08-20-2013, 02:32 PM   #14
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Quote:
Originally Posted by rbtamms View Post
Just curious...If you want to run 8.5's all around. How can you rotate the tires if you're planning on using 225 front & 255 rear tires?
no no no. I would rotate if i kept the same tire size all around. Those were my initial thoughts, I just changed my mind as the thread progressed.
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      08-20-2013, 06:54 PM   #15
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Square wheels? Like this?
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      08-20-2013, 07:01 PM   #16
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Quote:
Originally Posted by Quasimodem View Post
Square wheels? Like this?
That is funny
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      08-20-2013, 07:03 PM   #17
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Quote:
Originally Posted by Quasimodem View Post
Square wheels? Like this?
Roll your fenders if you go square, or you're going to have some massive rubbing.
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      08-21-2013, 06:54 AM   #18
cyclicoyster
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Originally Posted by Quasimodem View Post
Square wheels? Like this?
You guys are hilarious!!
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      08-21-2013, 11:15 AM   #19
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Quote:
Originally Posted by dkexige
Quote:
Originally Posted by Quasimodem View Post
Square wheels? Like this?
Roll your fenders if you go square, or you're going to have some massive rubbing.
lol are you for serious? Square wheels + tires will fit no problem and will ride the most comfortable as well lol flintstones
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      08-21-2013, 12:15 PM   #20
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      08-21-2013, 12:27 PM   #21
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Quote:
Originally Posted by FCobra94 View Post
lol are you for serious? Square wheels + tires will fit no problem and will ride the most comfortable as well lol flintstones
See the picture The 'radius' of a square is larger at the corners than the edges.
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      08-21-2013, 02:24 PM   #22
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Oh, yeah...depending on the offset of the square, you are 100% correct. Otherwise all you have to do is cut the fenders off and rivet some new ones on lol Bushwacker flares
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