[G80S58]

255/35 and 265/35 FTW! Still no issues about 500 miles already. Thanks again to alohasurftoad

[cdavies102]

Hi all - i'm currently in the market for an F32 435i M Sport here in the UK, with the intention of fitting a set of 437M wheels to it as soon as possible.

I've been through all 13 pages of this thread and i'm sold on the idea after seeing some of your examples. I've now got a good idea on recommendations on tyre sizes that work well on people's cars, but not everyone posted whether they're XDrive or not. I believe if non XDrive, then the sizes aren't too important as they don't need to be within the 1% of each other, but I don't want the tyres scraping (full lock is fine).

Can anyone advise if it's better for me to search for an XDrive or non-XDrive car to run OEM 437M 19s please? I'll potentially be lowering which i've read helps camber the wheels in.

Is there a general consensus on best overall tyre sizes on an F32 435i either XDrive or non?

Thanks in advance!

[alohasurftoad]

Its generally easier to modify non x-drives and especially in regards to wheels, tires, and suspension.

For tire sizes on non x-drives, 245/35/19, 265/35/19

If x-drive 235/40/19, 265/35/19 or 255/35/19, 265/35/19, like cramazin in the post above.

[cdavies102]

Originally Posted by alohasurftoad

Its generally easier to modify non x-drives and especially in regards to wheels, tires, and suspension.

For tire sizes on non x-drives, 245/35/19, 265/35/19

If x-drive 235/40/19, 265/35/19 or 255/35/19, 265/35/19, like cramazin in the post above.

Really appreciate the response - thanks! Non XDrive it is!

[Mike5215]

Just to add something here for posterity. I have an 18 F32 and practically since new has had a set of EBay 437 19” staggered reps. They were problem free, balanced up fine and rode smoothly. Last month I nailed what turned out to be a deep-as-F pothole on both axles on the right side.

After, there was a subtle bit of hop from the rear of the car. I had the dealer rebalance x 4 and align. While the alignment was still in spec, both right wheels had bends that became apparent on the road force balance machine. Given the amount of deflection the shop recommended replacing both wheels and tires (All four tires had just been replaced in June of 19)

Insurance subsequently paid the equivalent of the two OEM 18” wheels and tires, which was close enough to the cost of the reps. Based on this thread I decided to run the 18” take-offs while I hunted down a set of OEM 437s.

For fun I got the quote from BMW Parts at $1600 per wheel. (I needed 4 as the widths and offsets are mildly different). I did fortunately quickly find an OEM set in perfect condition with low mileage Conties in the OEM M4 sizes (275 rear, 255 front). Since the cost ($2700 shipped) was a decent price for the wheels alone I figured if the tires were squirrelly I could chuck them.

The wheels arrived as promised in visibly perfect shape. I had the shop rebalance x4 and also measure for run-out. All four passed.

The Verdict:

Visually I think the slightly widened stance and beefy sidewalls look great at 275, 255. The fronts look much sexier, pushed out as close to flush at the top as I could hope for. The fronts as mentioned elsewhere have deeper concavity than the reps due to 6mm less offset and 1/2” in overall width. The rears also look great and also are near perfect flush at the top. There’s less visual difference between the rep rear and the OEM rear structurally. In terms of finishes on close inspection the painted and cleared areas on the OEM have a little more depth, gloss and metal flake and the polished and cleared areas have more luster. To a casual observer it would be hard to distinguish the difference.

Driveability wise the 275/255 combo is too much tire for the car. Up front Its 12mm wider in stance (1/2”) and 1” wider contact patch. The steering is noticeably heavier as a result. While this isn’t necessarily bad, the extra contact patches front and rear cause the car to have a tendency to tram line. This is especially troubling at high speed lane changes, where the fat wheels tend to resist being pulled out of the depressions in the lane. First they resist, and then once enough steering input is applied they jump unexpectedly right over into the next set of depressions. I was able to get a lot of it dialed out in another alignment, and running 2lbs PSI under also helped. It’s liveable if not ideal. I can’t justify tossing the tires and dropping to the alternate sizing suggested here but when the Conties are done (and at 2lb under it won’t take long) I’ll go that route.

All things considered, while the OEM 437s are gorgeous and stigma-free, the reps at $800 a set and 225/40, 255/35 MPSS do not negatively affect handling and look nearly as good for a tiny fraction of the price. Also, it won’t break your heart when you curb them.

Pics 1&2 are the reps. Pic 3 is not mine but running the same wheels and tires.

[BMWILUVU]

Is anyone on stock suspension and rubbing with OEM 437m with 255 in the front?

[Mike5215]

I’m stock height and running 255. Plenty of clearance.

[BMWILUVU]

Originally Posted by Mike5215

I’m stock height and running 255. Plenty of clearance.

How much poke in the front? Never rubbed even at full shock extension?

[mlev]

Originally Posted by Mike5215

Just to add something here for posterity. I have an 18 F32 and practically since new has had a set of EBay 437 19” staggered reps. They were problem free, balanced up fine and rode smoothly. Last month I nailed what turned out to be a deep-as-F pothole on both axles on the right side.

After, there was a subtle bit of hop from the rear of the car. I had the dealer rebalance x 4 and align. While the alignment was still in spec, both right wheels had bends that became apparent on the road force balance machine. Given the amount of deflection the shop recommended replacing both wheels and tires (All four tires had just been replaced in June of 19)

Insurance subsequently paid the equivalent of the two OEM 18” wheels and tires, which was close enough to the cost of the reps. Based on this thread I decided to run the 18” take-offs while I hunted down a set of OEM 437s.

For fun I got the quote from BMW Parts at $1600 per wheel. (I needed 4 as the widths and offsets are mildly different). I did fortunately quickly find an OEM set in perfect condition with low mileage Conties in the OEM M4 sizes (275 rear, 255 front). Since the cost ($2700 shipped) was a decent price for the wheels alone I figured if the tires were squirrelly I could chuck them.

The wheels arrived as promised in visibly perfect shape. I had the shop rebalance x4 and also measure for run-out. All four passed.

The Verdict:

Visually I think the slightly widened stance and beefy sidewalls look great at 275, 255. The fronts look much sexier, pushed out as close to flush at the top as I could hope for. The fronts as mentioned elsewhere have deeper concavity than the reps due to 6mm less offset and 1/2” in overall width. The rears also look great and also are near perfect flush at the top. There’s less visual difference between the rep rear and the OEM rear structurally. In terms of finishes on close inspection the painted and cleared areas on the OEM have a little more depth, gloss and metal flake and the polished and cleared areas have more luster. To a casual observer it would be hard to distinguish the difference.

Driveability wise the 275/255 combo is too much tire for the car. Up front Its 12mm wider in stance (1/2”) and 1” wider contact patch. The steering is noticeably heavier as a result. While this isn’t necessarily bad, the extra contact patches front and rear cause the car to have a tendency to tram line. This is especially troubling at high speed lane changes, where the fat wheels tend to resist being pulled out of the depressions in the lane. First they resist, and then once enough steering input is applied they jump unexpectedly right over into the next set of depressions. I was able to get a lot of it dialed out in another alignment, and running 2lbs PSI under also helped. It’s liveable if not ideal. I can’t justify tossing the tires and dropping to the alternate sizing suggested here but when the Conties are done (and at 2lb under it won’t take long) I’ll go that route.

All things considered, while the OEM 437s are gorgeous and stigma-free, the reps at $800 a set and 225/40, 255/35 MPSS do not negatively affect handling and look nearly as good for a tiny fraction of the price. Also, it won’t break your heart when you curb them.

Pics 1&2 are the reps. Pic 3 is not mine but running the same wheels and tires.

You can often find a full set of used OEM 437's from an M2/M3/M4 seller for around $1400. That's a $400-600 difference between the replicas.
Is it really worth it after dealing with the headache, insurance claims, trips to the alignment and tire shop (including labor), for the money saved with heavy, cast, shallow concave Chinese replicas that got ruined from a pothole? I can't imagine it is.
No brainer, IMO, having the peace of mind with stronger, authentic premium forged wheels for your premium German vehicle. Accordingly, the stigma for Chinese knock-off wheels seems rather justified. I'd pay the $600 just to not have to deal with the hassle of what you went through.

[Mike5215]

Originally Posted by BMWILUVU

How much poke in the front? Never rubbed even at full shock extension?

6mm (1/4”) for offset and 1/4” for additional rim width (at 9” vs an 8.5”), so that’s a half inch more poke in my case. I haven’t experienced any rubbing. Although I think it would be on full compression that you’d see any interference.

(Yes I know that there’s actually an extra half inch in wheel width, but as far as poke I’m only adding half that for the front face of the wheel.)

[Mike5215]

Originally Posted by mlev

You can often find a full set of used OEM 437's from an M2/M3/M4 seller for around $1400. That's a $400-600 difference between the replicas.
Is it really worth it after dealing with the headache, insurance claims, trips to the alignment and tire shop (including labor), for the money saved with heavy, cast, shallow concave Chinese replicas that got ruined from a pothole? I can't imagine it is.
No brainer, IMO, having the peace of mind with stronger, authentic premium forged wheels for your premium German vehicle. Accordingly, the stigma for Chinese knock-off wheels seems rather justified. I'd pay the $600 just to not have to deal with the hassle of what you went through.

I will buy every $1400 set of undamaged OEM 437s you can lay your hands on and a $100 finders fee to you. PM me!

Edit:

I was being a smart-ass but damn if MLev didn’t find (and PM me) some good looking candidates (not on EBay) for around $1400, including a Ferric Gray set. I never think to look past EBay for used wheels, mainly for the convenience of shipping and the Buyer Protection stuff, but apparently I overpaid a bit for my set, even with the new-ish tires.

So yes, even at $1500 a set of clean OEM take-offs makes more economic sense than an $800 set of reps.

Lesson learned

[monroevee]

Hello

Greeting from Thailand. This thread is very helpful for me and I just have a set of 437M OEM with my F32. The current wheels are 245/40/19 Front and 275/35/19 Rear loading with H&R Sport spring. In normal driving situation has no rubbing issue at all. But when fully turn there seem to be a little rub at wheel-well in the front. So I'm thinking to change the front wheel to 255/35/19 instead which should give more room between tires and the wheel-well. But there will be 5mm closer to strut and 5mm closer to fender. So just want to ask people here whether has anyone try 255/35/19 on front with H&R Sport Spring. Would there be any problems?

Thank you all of you here.

Regards,

[esoj37]

Appreciate all the info on this thread guys. Looking into a set of 437m's sometime this year.

[Gard]

Originally Posted by disintegrator66

Stance Perfection!!

Looks nice. Stock suspension?

[Gard]

Originally Posted by d_a_m

Here's mine with the 437m reps after refinishing them. And yeah, I badly need to drop it.

Looks Good!!

Stock springs and suspension?

[Mike5215]

Well I hated the way the car drove on the OEM 437Ms, at least the way it drove on the OEM M4 tire sizes. Too bad, because they looked really good, and I had a couple grand tied up in them, too much to risk dumping the tires for the smaller sizes recommended here. Went back to the reps and the previous tire sizes and happy to have my “old” car back.

Luckily my kid has a 328i and I donated the 437’s to him. He loves them.

[OcTag3n]

Okay my head is spinning but I think I've done right.

After trawling through this thread over & over again, I've finally decided on..

235/40 R19 F
265/35 R19 R

To be fitted to OEM 437M wheels to go on my 2015 435d Gran Coupe X-Drive, dropped on Eibach springs.

I originally ordered..

235/35 & 275/30 because they were £108 cheaper for 4 MPSS4, but the wheels would of been half inch smaller & my tire/arch gap would get bigger (it's already big even though my car is lowered on Eibachs)

I'm hoping the 235/40 & 265/35 will close the gap a little & not increase it & also give me zero rubbing issues.

Thanks to everyone who contributed to this thread but especially alohasurftoad who ultimately swayed me to go & change my order.

I'll post pics once on the car

[OcTag3n]

Fitted them with some new Michelin's today.

235/40 R19 Front
265/35 R19 Rear
OEM 437M wheels

No rubbing or any other nasty surprises & the car drives very nice, maybe even better than before.

Just need some tire dressing.

[OcTag3n]

After going for a spirited drive today, I'm convinced that these 437M wheels/tires are a considerable improvement over my standard 442 wheels. Much better road holding, sharper turn in & the Michelin's are quieter than the Bridgestons I had on the 442 wheels. I have nothing but positives with this wheel/tire combo.

And still no scrubbing at all.

[anielsen71]

Originally Posted by OcTag3n

Fitted them with some new Michelin's today.

235/40 R19 Front
265/35 R19 Rear
OEM 437M wheels

No rubbing or any other nasty surprises & the car drives very nice, maybe even better than before.

Just need some tire dressing now.

View post on imgur.com

Is it a Citrin schwartz? Looks a bit like mine in the sun, even though its hard to catch that color on pics.

[OcTag3n]

I believe it's Sapphire Black, paint code 475 I think.

[kel335i]

Originally Posted by slowF32

Since this thread was the reason I pulled the trigger on getting these rims on my 435i xDrive, it's only fair that I add to it...

Lowered H&R Springs.


rear 265/35/19 MPSS
front 235/40/19 MPSS

No rubbing at all on front or rear

Which H&R spring? Looks great.