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      06-14-2019, 02:35 PM   #1
city1991
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18 inch M rims

Anyone know the best place to get 18 inch m wheels for a 2016 640 xdrive coupe? My car has 20's, looking to buy a set of 18's. Thanks for your help.
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      06-14-2019, 07:24 PM   #2
Qsilver7
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Quote:
Originally Posted by city1991 View Post
Anyone know the best place to get 18 inch m wheels for a 2016 640 xdrive coupe?t
That's a very wide/vast request. Can you narrow the focus somewhat...like narrow it down to a specific BMW M-wheel style...or at least from a specific model line or model year(s)? Most of us have no clue what your likes/dislikes are. Do you want new or used? Do you want original or are replicas okay?

Are you familiar with or have you used a wheel/tire size calculator (they're easy to find by just googling "wheel tire size calculator". You can compare your original wheel/tire size to what you're looking at to figure out if there will be too much "poke" (out toward the fenders)...or too much "inset" (inward toward the suspension).

The following link is one of my fav wheel/tire size calculators: www.willtheyfit.com

I had a set of e38 Style 37 MPars that were sitting in my shed since 2008. They are a staggered set of 8"x18" w/13mm offset (front) and 9.5"x18" w/25mm offset (rear). I was in need of a set of winter tires for my f06 which came with 20" Style 356 wheels that were 8.5"x20" w/33mm offset (front) and 9"x20" w/44mm offset (rear).

The width of the MPars were within spec, the center bore was correct (72.56mm)...but the wheel offset were a lot different...especially the front MPar with its 13mm wheel offset.

I ran the numbers through the calculator (at link given above) to see if the poke & inset would be too great...and it turned out that the wheels would not stick out too far from the fenders. The hurdle that was left was if these e38 MPars would fit over the f06's brakes...especially the front ones. A fitting proved that they would. So these 18" e38 MPars that I used to run on my 1997 e38 740iL with a much lower wheel offset...ended up being the wheels used to mount my dedicated winter tires from my 2013 f06.

All of that was done by doing my homework and comparing the specs. Help us help you better...pare down your request or point us in a more focused direction...rather that throwing M-styled wheels at you from the historical catalog of BMW wheels. It's a waste of time to look up info and post it and you have no desire for that wheel design etc.

BTW, e39 18" MPars would work to...the biggest difference is that you'd need to use hub centric rings (since their center bore is 74.1mm vs your 72.56mm)...and the front e39 MPar has a 20mm offset, and the rear e39 MPar has a 24mm wheel offset.

FYI...I have 245/45/18 (f) & 255/45/18 (r) Michelin X-Ice xi3 tires mounted to the MPars which are used on my 13 f06 650ix.


Below is some info I posted back in Jan/2019 about mounting e38 MPars on my f06 650ix:

Quote:
Originally Posted by QSilver7 View Post
The illustration below (from www.willtheyfit.com) shows the "poke" and "inset" comparison of the original 20" Style 356 wheels & tires vs the 18" Style 37 MPar wheels & tires.

-

__________________
2006 E53 X5 4.4 | 2013 F06 650ix Gran Coupe`
BMW CCA Member #191509

Last edited by Qsilver7; 06-14-2019 at 07:37 PM..
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      06-16-2019, 01:16 AM   #3
city1991
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Quote:
Originally Posted by Qsilver7 View Post
Quote:
Originally Posted by city1991 View Post
Anyone know the best place to get 18 inch m wheels for a 2016 640 xdrive coupe?t
That's a very wide/vast request. Can you narrow the focus somewhat...like narrow it down to a specific BMW M-wheel style...or at least from a specific model line or model year(s)? Most of us have no clue what your likes/dislikes are. Do you want new or used? Do you want original or are replicas okay?

Are you familiar with or have you used a wheel/tire size calculator (they're easy to find by just googling "wheel tire size calculator". You can compare your original wheel/tire size to what you're looking at to figure out if there will be too much "poke" (out toward the fenders)...or too much "inset" (inward toward the suspension).

The following link is one of my fav wheel/tire size calculators: www.willtheyfit.com

I had a set of e38 Style 37 MPars that were sitting in my shed since 2008. They are a staggered set of 8"x18" w/13mm offset (front) and 9.5"x18" w/25mm offset (rear). I was in need of a set of winter tires for my f06 which came with 20" Style 356 wheels that were 8.5"x20" w/33mm offset (front) and 9"x20" w/44mm offset (rear).

The width of the MPars were within spec, the center bore was correct (72.56mm)...but the wheel offset were a lot different...especially the front MPar with its 13mm wheel offset.

I ran the numbers through the calculator (at link given above) to see if the poke & inset would be too great...and it turned out that the wheels would not stick out too far from the fenders. The hurdle that was left was if these e38 MPars would fit over the f06's brakes...especially the front ones. A fitting proved that they would. So these 18" e38 MPars that I used to run on my 1997 e38 740iL with a much lower wheel offset...ended up being the wheels used to mount my dedicated winter tires from my 2013 f06.

All of that was done by doing my homework and comparing the specs. Help us help you better...pare down your request or point us in a more focused direction...rather that throwing M-styled wheels at you from the historical catalog of BMW wheels. It's a waste of time to look up info and post it and you have no desire for that wheel design etc.

BTW, e39 18" MPars would work to...the biggest difference is that you'd need to use hub centric rings (since their center bore is 74.1mm vs your 72.56mm)...and the front e39 MPar has a 20mm offset, and the rear e39 MPar has a 24mm wheel offset.

FYI...I have 245/45/18 (f) & 255/45/18 (r) Michelin X-Ice xi3 tires mounted to the MPars which are used on my 13 f06 650ix.


Below is some info I posted back in Jan/2019 about mounting e38 MPars on my f06 650ix:

Quote:
Originally Posted by QSilver7 View Post
The illustration below (from www.willtheyfit.com) shows the "poke" and "inset" comparison of the original 20" Style 356 wheels & tires vs the 18" Style 37 MPar wheels & tires.

-

Thanks for your help. I appreciate it.
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      06-19-2019, 05:38 PM   #4
DRock3d
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Good luck, I had 19 inch BMW wheels hit my front caliper without spacers when fresh pads were fitted.
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