Style #437 correct wheel spacer size

[Mineral///M4]

2015 ///M4 coupe 38k miles


Please advise what size wheel spacers look correct for my rims? I typically like it to be flush to the wheel wells. I will eventually add either springs or coilovers to correct the stance.

Thank you,
b

[Rabidwooz]

I would also like to know this as I'm about to do the same. I want to say 15mm or 12mm.

[Mineral///M4]

That is what I am thinking. I just want the facts before ordering

[Jockey]

Most people with 437m do 15/12mm.

I went with 12/10mm which still looked really good. Even with those, I was surprised at how much more road debris damage I was getting on the side of the car.

[rborane]

12mm all the way around. It will keep the spacing front to rear as factory and won't negatively impact handling characteristics.

I also tried 15/12 and felt the front was out a bit too much. 12mm all around is perfect.

[Rabidwooz]

Originally Posted by Jockey

Most people with 437m do 15/12mm.

I went with 12/10mm which still looked really good. Even with those, I was surprised at how much more road debris damage I was getting on the side of the car.

The debris is what I'm super worried about. How bad does it get exactly?

[deemack79]

I'm running 18mm all around. Lowered on H&R supersports as well. No issues at all, and looks mean as hell. Tommy L mudflaps keep the debris at bay.

[RRedline]

I run 15/12 with stock ZCP suspension and no mud flaps. The top of the rear fender above the OEM PPF is noticeably chipped. Had I bought mine new, I would have simply extended the PPF on the rear fender and problem solved.

[Jockey]

Originally Posted by Rabidwooz

The debris is what I'm super worried about. How bad does it get exactly?

It's worse. I had ppf done when the car was pretty new which I'm super happy about it since you will definitely need it on the rear fender flare.

More rocks hitting the side of the doors. Nothing terrible but noticeable.

[rborane]

12mm all around. I don't notice any chips on my rear quarter panel or scratches. Another reason why I did 12 instead of 15 in front, to minimize the risk of that...

[Rabidwooz]

Does anyone have 15mm spacers with Tommy's mudflaps? How long have you been running that setup and is your paint fully protected?

[Mineral///M4]

I am liking the way 12mm sounds. Thank you rborane for the excellent visual. This is the true facts.

[Tommy L Garage]

Originally Posted by Rabidwooz

Does anyone have 15mm spacers with Tommy's mudflaps? How long have you been running that setup and is your paint fully protected?

I ran both 15 and 18 mm spacers with 437 wheels and had full protection.
I suggest 18mm

[kevin @ eas]

We have huge spacer thread with various fitments if you want to check that out

https://f80.bimmerpost.com/forums/sh....php?t=1000804

[cnofar]

Originally Posted by Rabidwooz

Does anyone have 15mm spacers with Tommy's mudflaps? How long have you been running that setup and is your paint fully protected?

I have a 2015 M3, stock suspension but I have 15mm front and rear spacers and mudflaps. I do not have a paint protection film, etc. I've had this setup for less than a year. I not notice any more rock chips than normal. I like the 15mm front/rear spacers on stock 437 wheels, sits flush in my opinion, no rubbing issues.

Christopher

[RugbyBro]

12mm all around and lowered about 1in all around. IMO it didn't really look as good with stock ride height, looked like the wheels poked more so definite improvement, but in a weird way it made the wheel gap more noticeable to me.

[Taco_Bueno]

I'm running 15 all around. Lowered on EMD with 437s. Looks great. No mud flaps yet

[rborane]

Originally Posted by RugbyBro

12mm all around and lowered about 1in all around. IMO it didn't really look as good with stock ride height, looked like the wheels poked more so definite improvement, but in a weird way it made me wheel gap more noticeable to me.

What suspension?

[RugbyBro]

Originally Posted by rborane

What suspension?

MP HAS - about 3 threads left in front and 2 left in the rear. It was corner balanced with my desired weight (175) so there’s a tiny height difference from left to right

[BzsBimmer]

I ran 15/12 on my 437 setup. Lowered on Swift springs. Never noticed any more road debris than without spacers.

[mjposner]

I run 15mm up front 12mm back

[figure99]

Originally Posted by Jockey

Most people with 437m do 15/12mm.

I went with 12/10mm which still looked really good. Even with those, I was surprised at how much more road debris damage I was getting on the side of the car.

This. If the rear quarters are in good shape PPF them now. TLG's mudflats help a ton as well, and don't look terrible especially on a dark colored car.

I went with 12/10 on MPAS lowered to recommended height. I had the fronts on for about 20 miles before I determined I needed PPF and/or mud flaps if I wanted to keep the rear quarters looking good.... the doors got dirty fast as well. Took the front spacers off until I got PPF, going to put them back on shortly after I get my driveway repaired next week.