Wheel/Tire Fitment '21 M550i

avo999 · 06-02-2023, 03:49 AM

Im not knowledgeable when it comes to wheels/tires. I have a ‘21 M550i, currently with 20” 846M Performance wheels.

Current Wheel Specs (846M):

Front: 20x8 +30
Rears: 20x9 +44

I found some wheels for sale with the following specs:

Front: 20x9 +35
Rears: 20x10 +42

I’ll also be buying new tires to fit these wheels. My question is, would the sizes I found for sale work on my G30?

ashmostro · 06-04-2023, 03:47 PM

They would work nicely. If you added a 5mm spacer to the fronts you would end up with a +13mm space-OUT on front and +15mm rear relative to stock, which is a nice compromise between flush and flinging dirt on your doors.

If you wanted to go more aggressive you can do 8mm spacers on the front and 3mm on the back, resulting in +16mm front and +18mm rear, which is pretty much flush.

ashmostro · 06-04-2023, 03:54 PM

Also make sure the PCD (where the bolt holes are) and the hub diameter are correct for our cars.

PCD should be 5x112mm and centerbore should be 66.6mm

avo999 · 06-04-2023, 05:59 PM

I was able to find and buy some used HREs locally that were used on a 2020 530i, they fit perfectly,

Thanks!

ashmostro · 06-05-2023, 02:50 PM

Pics!

avo999 · 06-06-2023, 07:38 PM

Quote:

Originally Posted by ashmostro

Pics!

Plan on going up a tire size, the tires they came with are a size smaller than what HRE recommends foe these.
Currently on 275/30/20 + 245/35/20
Will get 285/30/20 + 255/35/20 once these tires wear out, which should be in another 5-6k miles.

ashmostro · 06-06-2023, 10:03 PM

Gorgeous! Really suits the color! Congrats on the find.

M550bernina · 06-24-2023, 01:47 PM

Quote:

Originally Posted by avo999

Plan on going up a tire size, the tires they came with are a size smaller than what HRE recommends foe these.
Currently on 275/30/20 + 245/35/20
Will get 285/30/20 + 255/35/20 once these tires wear out, which should be in another 5-6k miles.

Do you mind sharing what you picked them up for $?

avo999 · 06-27-2023, 06:19 AM

Quote:

Originally Posted by M550bernina

Do you mind sharing what you picked them up for $?

Got a pretty good deal. Wheels+tires for $1500

M550bernina · 06-27-2023, 08:17 AM

Quote:

Originally Posted by avo999

Got a pretty good deal. Wheels+tires for $1500

Damn. Hate you! Haha

06-02-2023, 03:49 AM	#1
avo999 New Member 0 Rep 14 Posts Drives: BMW M550i 2021 Join Date: Apr 2023 Location: Los Angeles,CA iTrader: (0)	Im not knowledgeable when it comes to wheels/tires. I have a ‘21 M550i, currently with 20” 846M Performance wheels. Current Wheel Specs (846M): Front: 20x8 +30 Rears: 20x9 +44 I found some wheels for sale with the following specs: Front: 20x9 +35 Rears: 20x10 +42 I’ll also be buying new tires to fit these wheels. My question is, would the sizes I found for sale work on my G30?
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06-04-2023, 03:47 PM	#2
ashmostro Brigadier General 1254 Rep 4,088 Posts Drives: 2020 M4cs \| 2022 M550i Join Date: Jan 2013 Location: Falls Church, VA iTrader: (27)	They would work nicely. If you added a 5mm spacer to the fronts you would end up with a +13mm space-OUT on front and +15mm rear relative to stock, which is a nice compromise between flush and flinging dirt on your doors. If you wanted to go more aggressive you can do 8mm spacers on the front and 3mm on the back, resulting in +16mm front and +18mm rear, which is pretty much flush. Last edited by ashmostro; 06-04-2023 at 03:53 PM..
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06-04-2023, 03:54 PM	#3
ashmostro Brigadier General 1254 Rep 4,088 Posts Drives: 2020 M4cs \| 2022 M550i Join Date: Jan 2013 Location: Falls Church, VA iTrader: (27)	Also make sure the PCD (where the bolt holes are) and the hub diameter are correct for our cars. PCD should be 5x112mm and centerbore should be 66.6mm
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06-04-2023, 05:59 PM	#4
avo999 New Member 0 Rep 14 Posts Drives: BMW M550i 2021 Join Date: Apr 2023 Location: Los Angeles,CA iTrader: (0)	I was able to find and buy some used HREs locally that were used on a 2020 530i, they fit perfectly, Thanks!
	Appreciate 0 Quote

06-05-2023, 02:50 PM	#5
ashmostro Brigadier General 1254 Rep 4,088 Posts Drives: 2020 M4cs \| 2022 M550i Join Date: Jan 2013 Location: Falls Church, VA iTrader: (27)	Pics!
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06-06-2023, 10:03 PM	#7
ashmostro Brigadier General 1254 Rep 4,088 Posts Drives: 2020 M4cs \| 2022 M550i Join Date: Jan 2013 Location: Falls Church, VA iTrader: (27)	Gorgeous! Really suits the color! Congrats on the find.
	Appreciate 0 Quote