[Spielzeugauto]

Originally Posted by Tribalpinoy911

Sad I cant run a setup on my xdrive car like my rwd car.

19x9.5 +20/ 19x11 +15
255/35/19
305/30/19

Well, not quite, but...

255/35-19 front
295/30-19 rear

is a perfect match 😉

[XxThe_RemedyXx]

Hey guys. I'm currently running 400m staggered wheels (18X8 front and 18X8.5 rear) on 225/45/18 squared tires all around (DWS06). The rears are just a tiny bit stretched but barely noticeable. I haven't had any issues (knock wood) but I'd like a more aggressive stance all around. Do you guys think spacers would work to get a bit more of an aggressive stance? If so, what size spacers do you recommend, 10mm front and 15mm rear?

[Spielzeugauto]

Originally Posted by XxThe_RemedyXx

Hey guys. I'm currently running 400m staggered wheels (18X8 front and 18X8.5 rear) on 225/45/18 squared tires all around (DWS06). The rears are just a tiny bit stretched but barely noticeable. I haven't had any issues (knock wood) but I'd like a more aggressive stance all around. Do you guys think spacers would work to get a bit more of an aggressive stance? If so, what size spacers do you recommend, 10mm front and 15mm rear?

With that small tire size, you can definitely push it further.
12mm front, and 15-18mm rear.

[Rogu3]

I'm also looking at doing a staggered setup on my xDrive, but I'm having a difficult time deciding on tires. I'm also looking for a flush look. The wheels I'm looking at are 19.8.5 et35 in the front and 19x9.5 et33 in the rear. Tires I'm looking at are 235/40r19 for the front and 265/35r19 for the rear and if the calculator is right they is about .4% rolling diameter difference. I don't want any stretch or bulge in the sidewalls and the car will eventually get lowered (probably the Eibach kit if compatible). The stock tires are a square setup of 225/45r18. Am I on the right track? Is the et33 on the rear going to make the wheels poke?

[CPT Smuggs]

You will get some poke with ET33 and 9.5" wheel. It may not look bad and appear aggressive with the rear wheels slightly past the fenders while the front wheels are just inside. Depends if you like the muscle car look.

Here are pictures of my car on 19x8.5" ET35 square. The wheels sit just inside the fenders with no poke.

Your front tire will be identical, while your rear tire comes out 0.5" more than these pictures.

[Rogu3]

Originally Posted by CPT Smuggs

You will get some poke with ET33 and 9.5" wheel. It may not look bad and appear aggressive with the rear wheels slightly past the fenders while the front wheels are just inside. Depends if you like the muscle car look.

Here are pictures of my car on 19x8.5" ET35 square. The wheels sit just inside the fenders with no poke.

Your front tire will be identical, while your rear tire comes out 0.5" more than these pictures.

Yeah I was afraid of that. I was thinking that ET33 was going to make the rear tires poke a bit and that's what I'm wanting to avoid. I like the muscle car look, but only on a muscle car. I still want to do 9.5 in the rear so maybe an ET35/37/40 would be better? What size tire are you running on the front?

[CPT Smuggs]

Michelin Pilot Sport 4S 255/35R19 on square setup.

A wheel offset calculator says that to have the outside wheel edge the same front and back, you will need a 8.5" ET35 in front and 9.5" ET48 in rear. The extra wheel width will all be on the inside though, being 26mm closer to your strut/shocks. I dont know if that's an issue in the rear. It would be in the front lowered for sure.

https://www.1010tires.com/Tools/Whee...et-Calculator#

[Rogu3]

Gotcha. Well I was going to do 235/40r19 on 19x8.5 in the front so that shouldn't be an issue at all. Looked up some other setups and it looks like a 19x9.5 ET45 would give the flush look well in the rear so was thinking of going that route instead with a 265/35r19. Just now need to figure out the tires being stretched at those sizes. My current setup looks like the tires are bulging a little bit (225/45r18 on style 400m wheels) and it looks like the wheels stock are slightly staggered from my reading. Which would explain why I'm getting jerking after I rotated my tires. I guess I accidentally had the wider wheels put in the front, but with the tires matching I didn't think that would cause jerking while driving. But overall, I think the 19x8.5 ET35 in the front and 19x9.5 ET45 in the rear should be a safe way to go.

[christopher0227]

Hello I have a question. Im entering the BMW world from the Nissan world. And was wondering I just got a 2017 bmw xdrive awd all stock. And was wondering if I could run a 275/25zr20 in the rear and get away with no issues?

[acevesf]

Guys will this work for a 430i gran coupe? I am on stock x drive suspension but may go springs or coil overs in the future

Front: 19x8.5 et 35 235/40r19
Rear: 19x9.5 et 45 265/35r19


with 8.5/9.5 i'd just go 235/40/19(10mm stretch front), 265/35/19(perfect fit rear). 26.4"/26.3", 0.4% diameter difference and acceptable for your x-drive.

[alohasurftoad]

Originally Posted by acevesf

Guys will this work for a 430i gran coupe? I am on stock x drive suspension but may go springs or coil overs in the future
Front: 19x8.5 et 35 235/40r19
Rear: 19x9.5 et 45 265/35r19
with 8.5/9.5 i'd just go 235/40/19(10mm stretch front), 265/35/19(perfect fit rear). 26.4"/26.3", 0.4% diameter difference and acceptable for your x-drive.

This will fit nicely, no issues

[acevesf]

Originally Posted by alohasurftoad

This will fit nicely, no issues

Thank you!

[Musashi]

Originally Posted by 2_Swift

I have the same DTC problem happening every now and then when I want to speed up quickly. It especially sucks when I want to pass up a slower vehicle on the left (right lane clear with no car creeping up), turn on change lights, begin to step on it as I move over and the DTC kills my speed. This would be a bad situation for someone who thinks they have that extra speed to cut off another driver to pass. For the time being, when I want to pass with speed, I keep it on Sport +. Though, I only do this when it's dry and not raining out as I would hate to loose traction.

My current setup is:
2014 335i Xdrive msport BMS stage 1 (no drop yet)
Apex EC-7 19"
F ET35 235/35/19 Conti DWS
R ET43 275/30/19 Conti DWS

I'm tempted to buy another set of EC-7's ET35 for the rear to go square as snj49er has. Will be keeping an eye on posts to see if other members have better luck with tire combos that will help to fix this problem.

Perhaps this has already been answered, but your sizes are incompatible with xDrive. The front is -2.7% smaller than reference 225/45/r18 or 225/35r20. The rear is -1.9% smaller than reference 255/30r20. It is not just F vs R, but F, R vs BENCHMARK OEM size, programmed in the xDrive, and that is another... 1-2% to consider. F-R could be at 0% delta, but if 3% smaller than benchmark (and worsening with tread wear), the xDRIVE torque and RPM sensor go crazy with higher RPM for a given speed, thinking the wheels skid. In some cases, xDrive gets damaged, premature xDrive failure results in a real PITA 5000$ cost. Or 7000$ depending where.

235 options could have only been:

235/40r19 with 265/35r19 , optional 275/35r19. The 275 starts at +1.9% vs 255/30R20 benchmark, but a few hundred kms and as the tread depth decreases 2-3 nds it actually falls well within spec. Downside, it is slightly fatter look, some 30mm more sidewall (1.5cm top and 1.5cm bottom vs benchmark).

There is also 225/40r19 with 255/35r19. With ultralight wheels, this setup is 15lbs lighter than equivalent 235/275, for a nirvana effect. I run CCBs so I am 70lbs less than OEM, for an easy 0.2 to 0.3 s improvement without engine mods.

So it is not just a REAR vs FRONT diameter delta, but also delta from OEM BENCHMARK SIZE built into the vehicle.

[J555]

Originally Posted by Musashi

So it is not just a REAR vs FRONT diameter delta, but also delta from OEM BENCHMARK SIZE built into the vehicle.

Interesting, haven't heard about that before!

Recently I changed my tires from oem 225/40/19+255/35/19 to 245/40/19+275/35/19 - a 2.3% increase of diameter. Absolutely love this setup, but should I be really worried?

[Musashi]

Originally Posted by J555

Interesting, haven't heard about that before!

Recently I changed my tires from oem 225/40/19+255/35/19 to 245/40/19+275/35/19 - a 2.3% increase of diameter. Absolutely love this setup, but should I be really worried?

That was the point of the issues people had. In your case, it is fine, you went UP by only +1.9%. With wear, it gets closer and closer to that 0 the benchmark. For those starting with negative, e.g. -2.7%, they end up with -3%, -3.5% as they reach half tire tread depth. xDrive cannot handle that.

Where it will hurt is the wallet and performance. 245 / 275 are more expensive. Front clearance will also be very narrow if you lower the suspension (i sometimes check my 235 to ensure it does not touch). M3, M4 fenders are widened for the bigger tyres. 245/275 are also heavier, and tend to swing on imperfect roads. In fact, for my replacement am tempted to try 225/40R19 and 255/35R19 (12 lbs less weight). OR I go 235/40R19 and 265/35R19 (droppin that 275).

In the pic, Ray's wheel (cheaper than BMW oem yet stiffest and lightest forged on the planet!) 235/40R19 MPS4S and 3D CCBs = 60 lbs less than OEM M Performance setup you or I left BMW with. Rear, 20 lbs less. Considering that unsprung is x10 to x15 sprung weight equivalent, is is as if I lightened the car by 80x10 lbs, 800 lbs or 20%; effect is a most noticeable performance (0.3 to 0.4s accel), shorter braking, lighter steering (reduction of gyroscopic inertia) and so on.

[smak168]

I just wanted to give a shout-out to alohasurftoad.

I've been researching all the message chains regarding tire and wheel sizes that best suited the look I was going for.

After awhile I just PM'd alohasurftoad directly and he spent the time to reply and answer my questions.

Final result was
F 19x8.5 ET35 235/40/19
R 19x9.5 ET40 265/35/19

Completely flush both fronts and rears...no rubbing.

Thanks again alohasurftoad...now to the suspension forum to get rid of that unsightly xdrive wheel gap.

[J555]

Originally Posted by Musashi

That was the point of the issues people had. In your case, it is fine, you went UP by only +1.9%. With wear, it gets closer and closer to that 0 the benchmark. For those starting with negative, e.g. -2.7%, they end up with -3%, -3.5% as they reach half tire tread depth. xDrive cannot handle that.

Thanks a lot for explanation and sharing all the information, much appreciated!

Originally Posted by Musashi

Where it will hurt is the wallet and performance. 245 / 275 are more expensive. Front clearance will also be very narrow if you lower the suspension (i sometimes check my 235 to ensure it does not touch). M3, M4 fenders are widened for the bigger tyres. 245/275 are also heavier, and tend to swing on imperfect roads. In fact, for my replacement am tempted to try 225/40R19 and 255/35R19 (12 lbs less weight). OR I go 235/40R19 and 265/35R19 (droppin that 275).

I do not plan to lower my car, thus decided for higher sidewalls for comfort and reducing the fender gap. However, my primary motivation was the grip and bad understeer of 225's fronts. The change to 245/275 really transformed my car, the biggest difference is driving fast on bad quality curvy country roads. The grip is sensational, the steering feel is better for me (heavier with more information from the road surface), and the understeer is gone; only slight hints of oversteer at the limit (that is much higher than before). To my surprise, the M adaptive dampers work significantly better, too. Guess the reason is combination of larger circumference, higher and softer sidewalls, and reduced weight of wheels/tires.

To be fair, I am coming from the bad oem S001 RFT's and the track is wider now; changing only the tire size would indeed have less effect. Nothing is perfect, there are two minor negatives - due to wider and higher sidewall tires, the steering is a bit less sharp (as expected) and while the braking performance is better and the progression remains the same, the brake pedal feels softer.

I can easily imagine the often recommended 235/265 setup can actually be the sweet spot for many. Hopefully, one day will get a chance to compare it.

Big thanks to alohasurftoad also from me!

[Musashi]

Originally Posted by J555

Thanks a lot for explanation and sharing all the information, much appreciated!


I do not plan to lower my car, thus decided for higher sidewalls for comfort and reducing the fender gap. However, my primary motivation was the grip and bad understeer of 225's fronts. The change to 245/275 really transformed my car, the biggest difference is driving fast on bad quality curvy country roads. The grip is sensational, the steering feel is better for me (heavier with more information from the road surface), and the understeer is gone; only slight hints of oversteer at the limit (that is much higher than before). To my surprise, the M adaptive dampers work significantly better, too. Guess the reason is combination of larger circumference, higher and softer sidewalls, and reduced weight of wheels/tires.

To be fair, I am coming from the bad oem S001 RFT's and the track is wider now; changing only the tire size would indeed have less effect. Nothing is perfect, there are two minor negatives - due to wider and higher sidewall tires, the steering is a bit less sharp (as expected) and while the braking performance is better and the progression remains the same, the brake pedal feels softer.

I can easily imagine the often recommended 235/265 setup can actually be the sweet spot for many. Hopefully, one day will get a chance to compare it.

Big thanks to alohasurftoad also from me!

Oh you got the Wagon! I have some Canadian friends drooling for one but they are not for sale as of this year... Nice!

[Musashi]

Originally Posted by smak168

I just wanted to give a shout-out to alohasurftoad.

I've been researching all the message chains regarding tire and wheel sizes that best suited the look I was going for.

After awhile I just PM'd alohasurftoad directly and he spent the time to reply and answer my questions.

Final result was
F 19x8.5 ET35 235/40/19
R 19x9.5 ET40 265/35/19

Completely flush both fronts and rears...no rubbing.

Thanks again alohasurftoad...now to the suspension forum to get rid of that unsightly xdrive wheel gap.

I... dare you go 275 in the rear. As it wears it keeps an even ratio withe the 235. Right now I am 6/32 flush both front and rear. Rears I am running 275 of course. Yes, he gave you near perfect match, rears -0.5%.. but as the rear wears faster, the difference front to rear increases, front being higher and higher. If you check any sports car, rear tyres are always slightly taller than fronts.

[thakk]

I am looking for some new tires and rims for my 2014 328i xdrive.
I put new rubber on the stock rims last fall for winter, with the idea to get new rims and tires for summer.
I am thinking I want 19" rims with the 275 / 235 offset.
Has anyone purchased rims from canadawheels.ca? Any recommendations on some rims that might look nice?
I see lots of posts about the weight difference, and stuff like that.

Any tips on where I should start looking?

[PeoplesChamp91]

Someone local to me is selling 437M rims and tires off their M3. Tires are brand new and the size are 255/35/19 front and 275/35/19 rear. I have a 335i xdrive and wanted to know if I could run these setup without issue. Any help would be appreciated.

[alohasurftoad]

Originally Posted by PeoplesChamp91

Tires are brand new and the size are 255/35/19 front and 275/35/19 rear. I have a 335i xdrive and wanted to know if I could run these setup without issue.

since i've been on here(bimmerpost), it was thought that for x-drives it's best for the transfer case if the front and rear tire diameters are equal as possible with a limit of 1%. https://f30.bimmerpost.com/forums/sh....php?t=1142647

i've seen a few members with 1.2% difference and the OEM tire staggered set up on a 2-series is 1.7%. most recently codestar has an x-drive with the same setup you're considering 255-275(2.3%) without issues. https://f30.bimmerpost.com/forums/sh....php?t=1142647

i'm beginning to think for x-drive the front and rear diameter difference limit is much greater than 1% since codestar is doing fine with 2.3%.

if you get the wheels and there's no problems it will prove that the difference is higher and that we've been preaching wrong information. if you run into issues, you'll have to change the tire sizes to have closer diameters. 235/40-265/35 or 255/35-265/35 or 245/35-285/30 are proven sizes that work on 437M with x-drive.

what do yo think? will you "take one for the team"?