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M2 Technical Topics > Wheels / Tires -- Sponsored by The Tire Rack > Will the 513m 18" M3/4 wheels fit M2?

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      01-24-2016, 03:30 PM   #1
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Will the 513m 18" M3/4 wheels fit M2?

May want some for winter ...
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      01-26-2016, 10:14 PM   #2
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Yup
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      02-12-2016, 02:44 PM   #3
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9" square for a winterset. 9Jx18 ET29
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      02-12-2016, 03:25 PM   #4
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Of fucking course. It's an F80 under an F22 widebody.
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      02-13-2016, 09:42 AM   #5
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Originally Posted by swagon View Post
Of fucking course. It's an F80 under an F22 widebody.
According to BMW, 10mm narrower tires were needed to clear in both the front and rear. I call bullshit, but that's what they say. If they say that, then there's obviously some differences. Once again, I call bullshit.
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      02-13-2016, 12:23 PM   #6
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Quote:
Originally Posted by Twix View Post
According to BMW, 10mm narrower tires were needed to clear in both the front and rear. I call bullshit, but that's what they say. If they say that, then there's obviously some differences. Once again, I call bullshit.
The wheels sit pretty flush in the pics I have seen so far, but neither I believe what's BMW saying. Hell, even CCB's fit.
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      02-14-2016, 10:11 AM   #7
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Quote:
Originally Posted by Twix View Post
According to BMW, 10mm narrower tires were needed to clear in both the front and rear. I call bullshit, but that's what they say. If they say that, then there's obviously some differences. Once again, I call bullshit.
That's what M2 project manager Frank Isenberg said in the CAR interview:
"That chunkier [M2] body – 55mm wider front, 80mm rear – is essential to cover a wider track courtesy of M4 forged aluminium suspension components. «The track is the same, but the M4 tyres wouldn’t fit, so the tyres are 10mm narrower,» says Isenberg. The Michelin Pilot Super Sports measure 245/35 ZR19 front, 265/35 ZR19 rear."
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      02-14-2016, 10:34 AM   #8
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Originally Posted by Artemis View Post
That's what M2 project manager Frank Isenberg said in the CAR interview:
"That chunkier [M2] body – 55mm wider front, 80mm rear – is essential to cover a wider track courtesy of M4 forged aluminium suspension components. «The track is the same, but the M4 tyres wouldn’t fit, so the tyres are 10mm narrower,» says Isenberg. The Michelin Pilot Super Sports measure 245/35 ZR19 front, 265/35 ZR19 rear."
Yeah I remember that statement. But it doesn't make sense. If the parts are the same there's absolutely no reason that the tires couldn't fit, unless it has to do with EU regulations for puddle splashing or performance number (skid pad).

Since everybody seems to only care about acceleration numbers, we all know that both F80/2 and the F87 are more limited by traction than they are for power. I think if the M2 had the same 275 section width in the rear as the F80/2 it would have come far too close in 0-60 or 0-100 whatever you decide to use as the number. It already is too close, and 20mm more rubber out back will make a difference. I don't know the exact number, but it would put it too close.

As for skid pad, braking and slalom numbers, I bet the only one that the M2 won't beat would be braking. The longer wheelbase of the F80/2 will probably make it more stable in the corners, but with the same weight and tire size, the F87 sure will change direction faster because of the shorter wheelbase. The longer wheelbase may help the larger cars stop faster because of the extra pressure the rear end will have, or it may not help.

I'm also not sure if the launch control computer will compensate for added traction of the tire, although it should since it would be using wheel speed sensors. Therefore, those with a DCT may meet the F80/2 accel times by just changing to a 295 tire. The manual is a bit of a different story, that's more driver dependant, but with a larger tire, the time may also be met.

That, I believe is the real reason the tire sizes were narrowed, not because of clearance to the suspension. It boils down to splash regulations, maybe the fenders don't stick out far enough for the wider tires, or that the performance would be too closely matched.

Just my $0.02 (which is almost nothing because of the Canadian dollar)
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      02-14-2016, 12:13 PM   #9
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Quote:
Originally Posted by Twix View Post
Yeah I remember that statement. But it doesn't make sense. If the parts are the same there's absolutely no reason that the tires couldn't fit, unless it has to do with EU regulations for puddle splashing or performance number (skid pad).
Since everybody seems to only care about acceleration numbers, we all know that both F80/2 and the F87 are more limited by traction than they are for power. I think if the M2 had the same 275 section width in the rear as the F80/2 it would have come far too close in 0-60 or 0-100 whatever you decide to use as the number. It already is too close, and 20mm more rubber out back will make a difference. I don't know the exact number, but it would put it too close.
As for skid pad, braking and slalom numbers, I bet the only one that the M2 won't beat would be braking. The longer wheelbase of the F80/2 will probably make it more stable in the corners, but with the same weight and tire size, the F87 sure will change direction faster because of the shorter wheelbase. The longer wheelbase may help the larger cars stop faster because of the extra pressure the rear end will have, or it may not help.
I'm also not sure if the launch control computer will compensate for added traction of the tire, although it should since it would be using wheel speed sensors. Therefore, those with a DCT may meet the F80/2 accel times by just changing to a 295 tire. The manual is a bit of a different story, that's more driver dependent, but with a larger tire, the time may also be met.
That, I believe is the real reason the tire sizes were narrowed, not because of clearance to the suspension. It boils down to splash regulations, maybe the fenders don't stick out far enough for the wider tires, or that the performance would be too closely matched.
Just my $0.02 (which is almost nothing because of the Canadian dollar)
Sounds sensible. But that's related to the 513M (18") (as OP requested).

Additional question re "more rubber = more grip": may we assume that the M2 can handle without rubbing the 437M (19") sporting 255/35 front (instead of 245/35) and 275/35 rear (instead of 265/35) ?

See this post for the M2/M3/M4 offsets: http://f87.bimmerpost.com/forums/sho...14&postcount=7
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      02-15-2016, 08:32 AM   #10
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Quote:
Originally Posted by Twix View Post
According to BMW, 10mm narrower tires were needed to clear in both the front and rear. I call bullshit, but that's what they say. If they say that, then there's obviously some differences. Once again, I call bullshit.
I do too. Guess it depends if the OP will lower the car, but there looks like there's room for wider tires:



We'd have to see how close the front tires are to hitting the wheelhouse liner when the wheels are turned though.

Having said that, I don't see the 18s being a problem.
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      02-15-2016, 09:19 AM   #11
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Come on guys, if you look at the available space compared to the M3/4 you'll see that is a lot less and there is no room for a manufacturer to provide wider tires. That is not the same as it won't fit for most people but as I've said in a couple of threads BMW has to account for all conditions and that includes snow chains and other stuff.
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      02-15-2016, 10:18 AM   #12
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I would love to switch out the Black 437s for Silver 437s.
Are the wheels identical inc. offsets?

That would be awesome to swap with a F8x owner
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      02-15-2016, 10:21 AM   #13
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Quote:
Originally Posted by miiipilot View Post
I would love to switch out the Black 437s for Silver 437s.
Are the wheels identical inc. offsets?

That would be awesome to swap with a F8x owner
Yes, yes, yes.
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      02-15-2016, 02:36 PM   #14
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Quote:
Originally Posted by metrickid View Post
Come on guys, if you look at the available space compared to the M3/4 you'll see that is a lot less and there is no room for a manufacturer to provide wider tires. That is not the same as it won't fit for most people but as I've said in a couple of threads BMW has to account for all conditions and that includes snow chains and other stuff.
Pretty damn sure snow chains on staggered 437 M's are not approved. For winter, BMW has a set of 255 tires all around on 8.5" & 9" rims. There is definitely not enough room for dem chains on stock, staggered 437's.
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      02-15-2016, 08:11 PM   #15
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Quote:
Originally Posted by miiipilot View Post
I would love to switch out the Black 437s for Silver 437s.
Are the wheels identical inc. offsets?

That would be awesome to swap with a F8x owner



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      02-15-2016, 08:15 PM   #16
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^^^^^YES^^^^^
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      02-19-2016, 07:25 PM   #17
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Silver 437's would add a little classiness to the M2, less aggressive more elegant than the black 437's.
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      02-20-2016, 09:45 PM   #18
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Quote:
Originally Posted by Denk
Silver 437's would add a little classiness to the M2, less aggressive more elegant than the black 437's.
M2 is not classy, he's a mean SOB :
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      07-30-2016, 01:38 AM   #19
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OEM 437M 19" wheels taken off as they get a Gyeon Quartz coating (as well as the rest of the car). Hence, temporarily sporting 513M 18" wheels of an M4. Soon my 437M wheels will be fit again (which I also personally prefer).

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      07-30-2016, 05:52 AM   #20
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Those 18" look the muttz nuttz fella

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      07-30-2016, 08:17 PM   #21
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I like the 18's for that understated look. They're proportionally a better fit on the M2. Silver 437's would still be #1 wheel on the M2 for me.
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      07-31-2016, 10:42 AM   #22
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I hope 640M's painted in satin black will be a better option as those 513 M's. The Ferric Grey of the 513's is not the added value for a winterset I look for on the MG.
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