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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Wheels / Tires / Suspension / Brakes Need wheel sizes for 20" square setup
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      06-15-2019, 10:01 AM   #1
Luky
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Need wheel sizes for 20" square setup

Looking into a square setup with 255/35-20 MPS4S tires. My main question/concern is how the wheels will look/fit on the rear? Anybody have pics of 8.5 wide et35 on the rear?

Most 5 spoke options in 5x120 I am finding are 20x8.5 et35 or et33. I know this will be ok on the front, what about the rear? I would do 20x9 or 20x9.5, but can't find black 5 spoke design I like with ET that will not rub (et28-et25) or poke (et15) on the front.

Looking for a mostly flush fit. Running stock msport suspension but may go to coilover in the future with minimum lowering (hard to get in/out of my driveway when lowered).
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      06-15-2019, 12:41 PM   #2
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Quote:
Originally Posted by Luky View Post
Looking into a square setup with 255/35-20 MPS4S tires. My main question/concern is how the wheels will look/fit on the rear? Anybody have pics of 8.5 wide et35 on the rear?

Most 5 spoke options in 5x120 I am finding are 20x8.5 et35 or et33. I know this will be ok on the front, what about the rear? I would do 20x9 or 20x9.5, but can't find black 5 spoke design I like with ET that will not rub (et28-et25) or poke (et15) on the front.

Looking for a mostly flush fit. Running stock msport suspension but may go to coilover in the future with minimum lowering (hard to get in/out of my driveway when lowered).
No rubbing issues, but it's not really flush. OEM 8.5" wide wheels are ET33, so only 2mm more inwards.
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      06-15-2019, 02:44 PM   #3
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Quote:
Originally Posted by remmib View Post
No rubbing issues, but it's not really flush. OEM 8.5" wide wheels are ET33, so only 2mm more inwards.
I not sure that's correct. (Or is there a 19x8.5 ET33 square set up that's stock?)

I believe the current 351M rears are 19x9 et44. So it's 9mm out (et44-et35) - 6.35mm (1/2" narrower wheel) + additional 5mm tire width (255). I guess that would be a net ~7mm additional poke on the rears? Or just 3mm on the wheel?

And if I use a 20x9 et35 (Niche M185) that would be 9mm out + 0mm (same width as 351M rear) + 5mm additional tire width (255) = 14mm net poke? Not sure if this will rub inside the rear fender?
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      06-15-2019, 05:30 PM   #4
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Quote:
Originally Posted by Luky View Post
Quote:
Originally Posted by remmib View Post
No rubbing issues, but it's not really flush. OEM 8.5" wide wheels are ET33, so only 2mm more inwards.
I not sure that's correct. (Or is there a 19x8.5 ET33 square set up that's stock?)

I believe the current 351M rears are 19x9 et44. So it's 9mm out (et44-et35) - 6.35mm (1/2" narrower wheel) + additional 5mm tire width (255). I guess that would be a net ~7mm additional poke on the rears? Or just 3mm on the wheel?

And if I use a 20x9 et35 (Niche M185) that would be 9mm out + 0mm (same width as 351M rear) + 5mm additional tire width (255) = 14mm net poke? Not sure if this will rub inside the rear fender?
Don't worry about running with ET35 and those "narrow" wheels. I once tried my fronts (20x9 ET26 with 255/35/20) in the rear and no rubbing.
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      06-15-2019, 05:43 PM   #5
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Quote:
Originally Posted by Luky View Post
I not sure that's correct. (Or is there a 19x8.5 ET33 square set up that's stock?)

I believe the current 351M rears are 19x9 et44. So it's 9mm out (et44-et35) - 6.35mm (1/2" narrower wheel) + additional 5mm tire width (255). I guess that would be a net ~7mm additional poke on the rears? Or just 3mm on the wheel?

And if I use a 20x9 et35 (Niche M185) that would be 9mm out + 0mm (same width as 351M rear) + 5mm additional tire width (255) = 14mm net poke? Not sure if this will rub inside the rear fender?
Non-staggered OEM setup with 351M on MSport, as remmib stated, is indeed 19 x 8.5 ET 33 all around. Your proposed ET 35 setup for an 8.5" wheel is nearly identical to OEM. These will not be flush. I am running 19 x 9.5 ET 35 on my rear wheels (with 275/19/35 tires) and they are closer to a flush setup.
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      06-16-2019, 11:01 AM   #6
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Quote:
Originally Posted by cdmulders View Post
Non-staggered OEM setup with 351M on MSport, as remmib stated, is indeed 19 x 8.5 ET 33 all around. Your proposed ET 35 setup for an 8.5" wheel is nearly identical to OEM. These will not be flush. I am running 19 x 9.5 ET 35 on my rear wheels (with 275/19/35 tires) and they are closer to a flush setup.
OK. Thanks for the info. I am leaning towards the 20x9 et35 niche M185 wheels. Went to a couple of local wheel places yesterday and asked them to get me pricing on 4 different (but similar) wheels. I know what they cost online, but would prefer to get them local in case there are issues.

20x9.5 et35 would be great but I don't think they would fit the front. I found some Touren TR20 20x9.5 et25 wheels (black 5 spoke with brushed silver face) that I am trying to get pricing on. Only found a couple of listings online so they may be discontinued. An ebay seller has a set for $955 with free shipping. I think these would look great on my silver 550i.
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