[Voski]

Do the m performance 763m wheels in m3/4 sizes fit on the M2 competition?
Front 19” /265
Rear 20” / 285

[Protatomonster]

Originally Posted by Voski

Do the m performance 763m wheels in m3/4 sizes fit on the M2 competition?
Front 19” /265
Rear 20” / 285

I do not believe so but I could be wrong.

[M-Pilot]

Originally Posted by Voski

Do the m performance 763m wheels in m3/4 sizes fit on the M2 competition?
Front 19” /265
Rear 20” / 285

They do fit. There are some OG M2 owners running 20" 666m wheels (265/30/20 front and 285/30/20 rear) from M3/M4 Comp. 20" rear 666m has the same offset as 20" 763m so it should fit without any problem.

[Protatomonster]

Originally Posted by cntzl

They do fit. There are some OG M2 owners running 20" 666m wheels (265/30/20 front and 285/30/20 rear) from M3/M4 Comp. 20" rear 666m has the same offset as 20" 763m so it should fit without any problem.

Dang now I'm wondering if I made a mistake purchasing 19" 763m would this make a large difference in performance?

[M-Pilot]

Originally Posted by Protatomonster

Dang now I'm wondering if I made a mistake purchasing 19" 763m would this make a large difference in performance?

19" front/20" rear setup is intended for M3/M4 but also fits on M2 with no problem. Why do you think you made a mistake? No, it won't make any noticeable difference assuming you are running the same width tires on both wheels. If anything, 19" rear 763M is slightly lighter than 20" rear 763m. If I were buy a set of 763m for my M3/M4, I would still go with 19" all around as opposed to the recommended 19"/20" setup. But you wouldn't notice any performance difference anyway as long as your tire setup isn't something crazy to upset the traction control (if you drive with DSC or MDM).

[Lotus99]

Originally Posted by cntzl

They do fit. There are some OG M2 owners running 20" 666m wheels (265/30/20 front and 285/30/20 rear) from M3/M4 Comp. 20" rear 666m has the same offset as 20" 763m so it should fit without any problem.

You 100% sure? I'm looking for winter wheels for my M2C, and 19" aftermarket wheels I've tried, their barrel doesn't clear the caliper in the front, because the stock wheels seem to have some sort of indent/channel behind the spokes which allow the calipers to clear...

So any old 19" wheel with the right offset won't work. The one I tried, the spokes cleared the calipers, but not the barrel.

I would still have to source used 763M wheels, but at least it's another option. I don't feel like spending 500 bucks a wheel right now on the OZ ones Tire Rack sells.

[M-Pilot]

Originally Posted by Lotus99

You 100% sure? I'm looking for winter wheels for my M2C, and 19" aftermarket wheels I've tried, their barrel doesn't clear the caliper in the front, because the stock wheels seem to have some sort of indent/channel behind the spokes which allow the calipers to clear...

So any old 19" wheel with the right offset won't work. The one I tried, the spokes cleared the calipers, but not the barrel.

I would still have to source used 763M wheels, but at least it's another option. I don't feel like spending 500 bucks a wheel right now on the OZ ones Tire Rack sells.

This is not any 19" wheel with the right offset. 19" 763m wheels are offered through M performance lineup and do fit on M2 and M2C. There are several pics of M2C with 19" 763M wheels.

[warrenw]

What 19" wheels are you trying, and what offset? What if you do an offset of say +23 in the front? That should clear for sure right?

[Lotus99]

You're probably right, I had them confused with another set of wheels. I thought these were the stock wheels of the M2, and hence, I might find them easily used.

They're $700 to $800 new, so it doesn't matter if I find them used anyway. I might as well go aftermarket and get new.

[Lotus99]

Originally Posted by warrenw

What 19" wheels are you trying, and what offset? What if you do an offset of say +23 in the front? That should clear for sure right?

Was your post for me? The wheels I tried in the front were 8.5" with 35 offset. So while that's 6 mm less than stock, it wasn't the wheel spokes that were rubbing against the front brake caliper. So the offset was not an issue.

It's the barrel of the wheel that is rubbing, because the OEM wheels have some form of channel / indent just behind the spokes to allow the calipers to clear the barrel too.

[warrenw]

Originally Posted by Lotus99

Was your post for me? The wheels I tried in the front were 8.5" with 35 offset. So while that's 6 mm less than stock, it wasn't the wheel spokes that were rubbing against the front brake caliper. So the offset was not an issue.

It's the barrel of the wheel that is rubbing, because the OEM wheels have some form of channel / indent just behind the spokes to allow the calipers to clear the barrel too.

Yeah I was responding to yours, sorry for not quoting.

8.5" w/35 offset is actually 12mm less than stock (stock is a 9" width) and I'm actually surprised that the face cleared at all given how close the spokes are to the brake.


I'm not necessarily seeing the groove but it definitely looks like it "barely" fits.




I would think that even if there's a groove, that doesn't effect clearing the barrel because the entire barrel would have to be the same depth as the groove otherwise you couldn't put the wheel on in the first place.


I'm really curious because until now in choosing my aftermarket wheel I've been looking at offset only... I'm concerned if there are barrel clearance issues.

[Lotus99]

Originally Posted by warrenw

Yeah I was responding to yours, sorry for not quoting.

8.5" w/35 offset is actually 12mm less than stock (stock is a 9" width) and I'm actually surprised that the face cleared at all given how close the spokes are to the brake.

I'm not necessarily seeing the groove but it definitely looks like it "barely" fits.

I would think that even if there's a groove, that doesn't effect clearing the barrel because the entire barrel would have to be the same depth as the groove otherwise you couldn't put the wheel on in the first place.

I'm really curious because until now in choosing my aftermarket wheel I've been looking at offset only... I'm concerned if there are barrel clearance issues.

You know, you make some pretty good points… Especially about the barrel. That doesn't make sense, what he told me, that the channel is just next to the spokes. It's more likely that the barrel thickness I guess is less on the OEM wheel than the one he tried?

I tried to take some pictures of the front wheel just now, and as you can see, there's about 3.5 cm (1.5") of space between the spokes and the caliper, down to just under 2.5 cm (1") at the lowest. So it doesn't surprise me that 12 mm retraction of the outer edge might not have scraped.

But the whole thing does totally puzzle me, why a 19" wheel didn't fit. I thought the wheel diameter was the easy part. Talking to Apex, with whom I might go now, they said that some 19" wheels are made to clear big brakes, like their 19x9" ET30 SM-10 Wheel, but not all are.

I guess That's why their 19x9" ET28 APEX ARC-8 isn't listed on the other hand, as a fit for this car.
.

[warrenw]

Originally Posted by Lotus99

You know, you make some pretty good points… Especially about the barrel. That doesn't make sense, what he told me, that the channel is just next to the spokes. It's more likely that the barrel thickness I guess is less on the OEM wheel than the one he tried?

I tried to take some pictures of the front wheel just now, and as you can see, there's about 3.5 cm (1.5") of space between the spokes and the caliper, down to just under 2.5 cm (1") at the lowest. So it doesn't surprise me that 12 mm retraction of the outer edge might not have scraped.

But the whole thing does totally puzzle me, why a 19" wheel didn't fit. I thought the wheel diameter was the easy part. Talking to Apex, with whom I might go now, they said that some 19" wheels are made to clear big brakes, like their 19x9" ET30 SM-10 Wheel, but not all are.

I guess That's why their 19x9" ET28 APEX ARC-8 isn't listed on the other hand, as a fit for this car.
.

Well looking at those two wheels one is more concave than the other, which might explain why they say one fits but the other doesn't. Does Apex have a M2C that they've been test fitting wheels on? I could be wrong but I don't think so, so I wouldn't trust their fit specs on the website until someone tries it and it doesn't work. Diameter of the M2C brake kit is 18" so if the wheels don't fit I'd say it's largely because of offset.

[Lotus99]

Originally Posted by warrenw

Well looking at those two wheels one is more concave than the other, which might explain why they say one fits but the other doesn't.

Does Apex have a M2C that they've been test fitting wheels on? I could be wrong but I don't think so, so I wouldn't trust their fit specs on the website until someone tries it and it doesn't work. Diameter of the M2C brake kit is 18" so if the wheels don't fit I'd say it's largely because of offset.

Hmmm... The convexity of the SM-10's is more, for sure. That wouldn't affect the barrel clearance though. You don't think that the thickness of the barrel is what's driving fit?

For reference, here are the two wheels:

https://www.apexraceparts.com/shop-b...-10-wheel.html

https://www.apexraceparts.com/wheels...c-8-wheel.html


They told me they know the SM-10's work with big brake kits, and the M2C has 400 mm rotors, slightly smaller than the M2's or the M2 carbon ceramic brakes which are 410 mm - can't remember which he said - with which they have been tested, so that's why they're confident and it's the only 19" wheel they say will fit the M2C.

The 19" ARC-8's in fact have a lower offset even, so if that was the main thing, they should fit too, but they don't list them as a fit.

[HERR FSTIR]

I posted this in another thread, but seems relevant to issues fitting 19" wheels on M2Cs equipped with the big brakes (2NH).


I have a set of 19" Blizzaks mounted on VMR wheels (19x8.5, 19x9.5) which I have used on my 1M. Was hoping to use these on the M2C this winter, but the 19" VMR wheel doesn't clear the front brake caliper. The surface of the inner barrel is slightly raised, narrowing the inner diameter, and preventing the wheel from clearing the brake caliper.

I measured the inner diameter of the VMR wheel barrel which is only 18". The OEM 788 wheel measures 18.5" internal diameter, providing enough clearance for the caliper.

[chris719]

Best winter set, 4x front 437M running 245s square

[warrenw]

Originally Posted by HERR FSTIR

I posted this in another thread, but seems relevant to issues fitting 19" wheels on M2Cs equipped with the big brakes (2NH).


I have a set of 19" Blizzaks mounted on VMR wheels (19x8.5, 19x9.5) which I have used on my 1M. Was hoping to use these on the M2C this winter, but the 19" VMR wheel doesn't clear the front brake caliper. The surface of the inner barrel is slightly raised, narrowing the inner diameter, and preventing the wheel from clearing the brake caliper.

I measured the inner diameter of the VMR wheel barrel which is only 18". The OEM 788 wheel measures 18.5" internal diameter, providing enough clearance for the caliper.

Oh wow, not good news at all. I'm starting to see it now, many aftermarket wheels' inner barrel diameter is smaller than the wheel diameter... Uh oh. Most manufacturers don't publish the inner barrel diameter online either....

[Lotus99]

Originally Posted by HERR FSTIR

I posted this in another thread, but seems relevant to issues fitting 19" wheels on M2Cs equipped with the big brakes (2NH).

I have a set of 19" Blizzaks mounted on VMR wheels (19x8.5, 19x9.5) which I have used on my 1M. Was hoping to use these on the M2C this winter, but the 19" VMR wheel doesn't clear the front brake caliper. The surface of the inner barrel is slightly raised, narrowing the inner diameter, and preventing the wheel from clearing the brake caliper.

I measured the inner diameter of the VMR wheel barrel which is only 18". The OEM 788 wheel measures 18.5" internal diameter, providing enough clearance for the caliper.

Mystery solved... I suspected the OEM wheel barrels are thinner than other wheels, which is pretty much the same thing I guess. That's why I was saying offset isn't the trickiest thing with this car, it's that not any 19" wheel with the correct offset will fit.

So as of this point, the cheapest non OEM options seem to be Apex SM-10's at around $400 a wheel (they've confirmed they clear BBK's), or the OZ HYPER GT HLT from Tire Rack (assuming their fitment calculator's correct).

[CanadianDriver]

OEMconcept can you confirm if your 437M and 763M reps have internal barrel diameter near the spokes of 18.5"?

[Lotus99]

Originally Posted by CanadianDriver

OEMconcept can you confirm if your 437M and 763M reps have internal barrel diameter near the spokes of 18.5"?

He said in an email to me he's sold the 763M's to someone with an M2C, and didn't hear back from them that it's an issue. I asked him to confirm that person has already put the wheels on their car (if it was for winters, maybe they haven't gotten around to it yet). But now that we know the barrel diameter that works, it's as simple as him measuring it I guess.

PS Does he sell wheels with tires mounted also, or just wheels?

I posted in another thread my experience at a shop with a set of 8.5" ET 35 wheels:

Today I went to my local wheel shop, and the test fitted a 19" BMW replica wheel on the front. The OEM front wheel is 19 x 9", ET 29. The wheel we tried was 8.5" wide, with 35 offset, and the side of the rim did NOT clear the brakes unfortunately.

[CanadianDriver]

Originally Posted by Lotus99

He said in an email to me he's sold the 763M's to someone with an M2C, and didn't hear back from them that it's an issue. I asked him to confirm that person has already put the wheels on their car (if it was for winters, maybe they haven't gotten around to it yet). But now that we know the barrel diameter that works, it's as simple as him measuring it I guess.

PS Does he sell wheels with tires mounted also, or just wheels?

I posted in another thread my experience at a shop with a set of 8.5" ET 35 wheels:

Today I went to my local wheel shop, and the test fitted a 19" BMW replica wheel on the front. The OEM front wheel is 19 x 9", ET 29. The wheel we tried was 8.5" wide, with 35 offset, and the side of the rim did NOT clear the brakes unfortunately.

I agree. He just needs to measure. Better yet, send a photo of the measurement inside the barrel. He sells wheels only. But he can ship directly to your trusted tire guy and pickup the set all in one visit.

[five3three]

was disappointed to see the lack of options for the m2c and will end up shelling out for some 19 763m for a set of track wheels