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      02-05-2016, 10:15 AM   #1
hybrid_eg
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M6 343M Wheels on F10 M5

From the brief research i did these should fit just fine on F10 M5.. i wanted to see what your thoughts are on this?

I have M5 343M's with 15mm spacers all around and fit perfect no rubbing on CP model..

A buddy of mine picked up a base model and needs to get rid of the 19's so i figured M6 343's will work as well and eliminate the need to run any spacer in rear.

M5 343M (my set up)
20x9 +32 (effective +17)
20x10 +34(effective +19)

M6 343M
20x9.5 +31
20x10.5+19

Basically M6 wheel is going to be 6mm wider on both sides right off the bat in comparison to M5.. inside there is plenty of clearance so nothing to worry about there.. after calculating to attain same fitment as on my M5 with spacers.. if he runs M6 wheels he will need estimated 8mm spacer up front and no spacer in rear.. in rear it will sit about 6mm farther out than my current set up.. which should still clear with no rubbing as he will have a 295 on 10.5 and not on a 10.. i personally don't like how 295 sits on 10 as it PSS bulge way too much on the sidewall.. so i feel they will sit better on 10.5.. just my opinion..

any thoughts?

Last edited by hybrid_eg; 05-14-2016 at 10:40 AM..
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      02-05-2016, 04:04 PM   #2
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I've tried this. One is doesnt look good, two the rear is way to wide and almost sticks out.
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      02-12-2016, 07:40 PM   #3
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Question

Quote:
Originally Posted by hybrid_eg View Post
From the brief research i did these should fit just fine on F10 M5.. i wanted to see what your thoughts are on this?

I have M5 343M's with 15mm spacers all around and fit perfect no rubbing on CP model..

A buddy of mine picked up a base model and needs to get rid of the 19's so i figured M6 343's will work as well and eliminate the need to run any spacer in rear.

M5 343M (my set up)
20x9 +32 (effective +17)
20x10 +34(effective +19)

M6 343M
20x9.5 +31
20x10.5+19

Basically M6 wheel is going to be 6mm wider on both sides right off the bat in comparison to M5.. inside there is plenty of clearance so nothing to worry about there.. after calculating to attain same fitment as on my M5 with spacers.. if he runs M6 wheels he will need estimated 8mm spacer up front and no spacer in rear.. in rear it will sit about 6mm farther out than my current set up.. which should still clear with no rubbing as he will have a 295 on 10.5 and not on a 10.. i personally don't like how 295 sits on 10 as it PSS bulge way too much on the side way.. so i feel they will sit better on 10.5.. just my opinion..

any thoughts?
So I have a '13 F10 M5. I have the original M5 343s w/ summer tires in storage. Currently, for winter set up, I have M6 601s w/ winter tires. I really like the aggressive stance, but I want to go back to the 343s in the summer. Based on your research, what size spacers should I apply when I go back to the M5 343s? I'm new to this, so if you've already answered my question in your original post, I apologize in advance. Thanks.
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      02-14-2016, 02:51 AM   #4
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Quote:
Originally Posted by ///Mpower/// View Post
So I have a '13 F10 M5. I have the original M5 343s w/ summer tires in storage. Currently, for winter set up, I have M6 601s w/ winter tires. I really like the aggressive stance, but I want to go back to the 343s in the summer. Based on your research, what size spacers should I apply when I go back to the M5 343s? I'm new to this, so if you've already answered my question in your original post, I apologize in advance. Thanks.
10-15 mm
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      02-14-2016, 03:33 PM   #5
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Pic for reference.

Top is 343 M6 wheels with 295

Bottom is 343 M5 wheels with 315
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      02-15-2016, 12:15 PM   #6
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we fitted them last week.. m6 wheels look just fine.. its pretty aggressive and zero rubbing.. no spacers required up front.. since his is not CP it would look even better if it was half inch or 1" lower as it would add a smidge of negative camber..

to answer ///Mpower/// on 343M for M5 i run 15MM MS spacers all around.. fits like a glove and looks very stanced on CP model.
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      02-15-2016, 12:26 PM   #7
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Quote:
Originally Posted by hybrid_eg View Post
we fitted them last week.. m6 wheels look just fine.. its pretty aggressive and zero rubbing.. no spacers required up front.. since his is not CP it would look even better if it was half inch or 1" lower as it would add a smidge of negative camber..

to answer ///Mpower/// on 343M for M5 i run 15MM MS spacers all around.. fits like a glove and looks very stanced on CP model.
Basically 343M M6 = 343M M5 + 15 mm spacer (19 mm offset compare to 34 mm offset) from outside.
And overall for both 10" and 10.5" rims, the total width of wheel is 295 mm (295/30/20) or 305 mm (305/30/20) since the tire is wider than both rims...
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      02-15-2016, 01:35 PM   #8
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Quote:
Originally Posted by M6-Coupe View Post
Basically 343M M6 = 343M M5 + 15 mm spacer (19 mm offset compare to 34 mm offset) from outside.
And overall for both 10" and 10.5" rims, the total width of wheel is 295 mm (295/30/20) or 305 mm (305/30/20) since the tire is wider than both rims...
M6 wheel in the rear stick out 6mm further than M5 343M with 15mm spacer..

M6 wheel in the front is sunken inward about 8mm or less than M5 343M with 15mm spacer..

In either case the difference when running M6 wheels versus M5 wheels with 15mm spacer is negligible.. The biggest difference of course is a car with CP and one without it.. as that little extra lowering definitely fill ups the fender gap nicely..

Mine is the white one on top and below is the car we put M6 343M's on..

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      02-15-2016, 01:43 PM   #9
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Quote:
Originally Posted by hybrid_eg View Post
M6 wheel in the rear stick out 6mm further than M5 343M with 15mm spacer..

M6 wheel in the front is sunken inward about 8mm or less than M5 343M with 15mm spacer..

In either case the difference when running M6 wheels versus M5 wheels with 15mm spacer is negligible.. The biggest difference of course is a car with CP and one without it.. as that little extra lowering definitely fill ups the fender gap nicely..

Mine is the white one on top and below is the car we put M6 343M's on..

You can double check here:
https://www.rimsntires.com/specspro.jsp

going from 10" wide rime ET 34 mm with tire size 295/30/20 to 10'5" rim ET 19 mm with the same tire size...

Fenders clearance: Package 2 will stick out 15 mm (0.6'') farther. Acceptable for most cars.
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      02-16-2016, 08:06 PM   #10
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Quote:
Originally Posted by cjrdriven
Top is 343 M6 wheels with 295

Bottom is 343 M5 wheels with 315
Is it just me, or is there too much bulge on the side wall of the M5 343 with 315s? If so, that'll destroy lateral performance.
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      02-16-2016, 08:19 PM   #11
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Quote:
Originally Posted by hybrid_eg
we fitted them last week.. m6 wheels look just fine.. its pretty aggressive and zero rubbing.. no spacers required up front.. since his is not CP it would look even better if it was half inch or 1" lower as it would add a smidge of negative camber..

to answer ///Mpower/// on 343M for M5 i run 15MM MS spacers all around.. fits like a glove and looks very stanced on CP model.
Would you suggest the same for '13 M5 non-CP?

Thanks for the info...much appreciated.
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      02-17-2016, 04:04 PM   #12
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Since '13 and '16 non-CP are the same, the set up on '13 would look the same as the one we mounted on my friends '16 last week.

if you already have M6 343M's you might as well go for it.. not worth buying M5 343M's as they aren't cheap.. i personally like how 343M's sit on CP model due to lower ride height..

For reference here is what his '16 non-CP looks like on M6 343M with factory PSS..


Last edited by hybrid_eg; 02-17-2016 at 04:35 PM..
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      02-21-2016, 09:48 PM   #13
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Quote:
Originally Posted by ///Mpower/// View Post
Is it just me, or is there too much bulge on the side wall of the M5 343 with 315s? If so, that'll destroy lateral performance.
I do not use the 315s for lateral performance. Just straight line traction. I use my 295s for lateral performance. Why I have two rear wheel options.
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      02-22-2016, 03:17 PM   #14
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quick update.. we may lower the non-cp model with H&R which should bring it to the same height as CP model so we will see how it sits with these M6 343M's.

I think it should look much nicer as the wheel gap will be eliminated yet it will still sit "aggressively stanced".
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      03-13-2016, 03:10 PM   #15
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Quote:
Originally Posted by hybrid_eg
quick update.. we may lower the non-cp model with H&R which should bring it to the same height as CP model so we will see how it sits with these M6 343M's.

I think it should look much nicer as the wheel gap will be eliminated yet it will still sit "aggressively stanced".
Did you ever go with the drop and do you have more pics? I'm thinking of doing the same.
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      03-14-2016, 04:37 AM   #16
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Are spacers necessary or just for aesthetics if one were to use M6 343s on an m5?

Could you run 265/305 setup on 9.5/10.5 rims - no spacers?
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      03-14-2016, 01:19 PM   #17
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Here is an update.. but no pics yet..

Yes we did drop the car with KW sleeves, it looks amazing.. lower than CP in the front and looks sexy.. rear is slightly lower than CP model.. zero rubbing in rear.. and if you read above its essentially 6MM more outward than my CP M5 set up with 15mm spacer.

Now since the car had been dropped, front will require a small spacer since it appears sunken a bit.. something between 5 and 8mm spacer will do.

IshR i would not run 305 on 343's that's pushing it for M5 body..
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      03-15-2016, 02:02 AM   #18
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Quote:
Originally Posted by IshR View Post
Could you run 265/305 setup on 9.5/10.5 rims - no spacers?
Yes you can run 265/305 on M6 343M... it's my current setup, but I believe for M5 it's too much. Compare to M5 343M with 295 tire, it stands 20 mm out (rear)
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      03-31-2016, 02:45 AM   #19
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Pictures??
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      04-01-2016, 01:19 PM   #20
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I was thinking that an interesting idea would be to run the stock M5 rears up front and the M6 rears at the back giving you 20x10 at the front and 20x10.5 at the rear.

Good for 295/30 and 305/30 which would be good for reducing understeer while not on power and still provide a wider rear for getting the power down. Unsure if the rear 20x10 will fit over the front brakes though, or if you'd need to go down to a 285 to avoid rubbing at full lock?
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      04-02-2016, 08:47 AM   #21
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Quote:
Originally Posted by brad850csi View Post
I was thinking that an interesting idea would be to run the stock M5 rears up front and the M6 rears at the back giving you 20x10 at the front and 20x10.5 at the rear.

Good for 295/30 and 305/30 which would be good for reducing understeer while not on power and still provide a wider rear for getting the power down. Unsure if the rear 20x10 will fit over the front brakes though, or if you'd need to go down to a 285 to avoid rubbing at full lock?
The rear 343 M5 (10") has 34 mm offset compare to 32 mm up front and then 295 is 15 mm wider (each side) compare to 265 so for the total of 17 mm inside I believe there is possibility for rubbing issue at suspension side
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      04-02-2016, 04:10 PM   #22
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10-15mm bolt on spacer? Might work better on an M6 than an M5 if there is more room at the front? I've seen people running 10mm spacers on stock wheels on an M5 and M6 and still have plenty of room. Although that was why I suggested 285's. Heck for the concept of it you could just remount stock 265's on the M5 rear wheels and put them on at the front to see how it works and go with different tyres after that!
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