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[douger]

I installed new wheels and tires a couple of days ago and now whenever I accelerate hard around a long sweeping uphill curve my DSC light flashes and the car cuts power (as though I was loosing control but I am not). This never happened on the same curve with my stock set up. I was careful to install factory specified wheel size, offset and tire sizes (staggered wheels are an option on the xi) so I would avoid problems. Has anyone had this problem when switching wheels on an xi? Does anyone have an xi with staggered wheels? Does your DSC kick in on long sweepers?

Any advise would be appreciated.

Stock 328xi sport package wheels & tires
Type 159 (17x8 ET34 225/45 R17) w/ContiProContact SSR non staggered

New wheels & tires
Style 195 replicas with Pirelli P Zero Nero M+S
Front: 18x8 +34 offset with 225/40/18
Rear: 18x8.5 +37 offset 255/35/18

[epiphone3]

it could be because of the different wall sizes you have (40 up front vs. 35 in rear).

The wheel speed sensors (aka. ABS sensors) maybe reading your front tires going a different speed than your rear tires and thinking that you are experience rear wheel slip.

Try accelerating in a straight line to high speeds (be reasonable, maybe match the speed you have been doing through the long sweeper) and see if the same thing happens.

[KL2DC]

No the issue lies with staggered setup conflicting with your x-drive...

[p166mmx73]

Originally Posted by KL2DC

No the issue lies with staggered setup conflicting with your x-drive...

I hope not. I have a set of 189's on the way myself so I'll let you know if I run into the same thing.

[douger]

Since there is a factory option for staggered wheels on the xi -- how is it that staggered wheels are a problem with x-drive?

[Carnage]

Originally Posted by douger

I installed new wheels and tires a couple of days ago and now whenever I accelerate hard around a long sweeping uphill curve my DSC light flashes and the car cuts power (as though I was loosing control but I am not). This never happened on the same curve with my stock set up. I was careful to install factory specified wheel size, offset and tire sizes (staggered wheels are an option on the xi) so I would avoid problems.
Any advise would be appreciated.

Stock 328xi sport package wheels & tires
Type 159 (17x8 ET34 225/45 R17) w/ContiProContact SSR non staggered

New wheels & tires
Style 195 replicas with Pirelli P Zero Nero M+S
Front: 18x8 +34 offset with 225/40/18
Rear: 18x8.5 +37 offset 255/35/18

Originally Posted by epiphone3

The wheel speed sensors (aka. ABS sensors) maybe reading your front tires going a different speed than your rear tires and thinking that you are experience rear wheel slip.

Originally Posted by KL2DC

No the issue lies with staggered setup conflicting with your x-drive...

My 2 cents, the answer lies in both of those replies. While what you bought is the "factory specified wheel size, offset and tire sizes " for the sports package on a 330/335i, it is not the same for the 328xi. The sports package staggered sizes for the 328xi are 225/45/17 front, 255/40/17 rear.

Bottom line, the DSC system is very sensitive and having the right size wheels and tires on the car is extremely important, especially on ones w/ x-drive. The new sizes you put on the xi are just the right size to cause periods where the DSC is reading what is going on as wheelslip.

[KL2DC]

Shoot, I hadn't realized the wheel option on the E92 xi is staggered...

Was the TPMS reinitialization done?

Edit: its an E90, the wheel upgrade option is not staggered iirc

[Carnage]

Originally Posted by KL2DC

No the issue lies with staggered setup conflicting with your x-drive...

Originally Posted by KL2DC

Shoot, I hadn't realized the wheel option on the E92 xi is staggered...

You're on the right track. It's not that the x-drive has trouble with A staggered setup, it sounds like it's having trouble with THAT staggered setup.

[douger]

You guys are all on points that I thought I did enough research on -- reading all about limited tollerances for differences in tire diameters in AWD cars. My logic was, since the staggered tire sizes I used are the same as the factory sizes on the 330xi and 335xi option, it should work on the 328xi. Also, using the calculator on top of this section of the forum (and checking tire diameters on tirerack.com), the tire diameters between the factory 17" and 18" staggered set ups, respectively, are the same. My understanding is that the issue is diameter -- and some AWD cars have limited tollerances for different diameter tires in front and back. My setup is within the tollerances offered as factory options. Where did I go wrong?

[mrdirosa]

I'm looking at putting staggered OEM 197s on my e90 328xi.

The same setup is offered on the e92 328xi, so I assumed it would work just fine.

Is this maybe not the case?

[gary328xi]

I have 225/40/18 and 255/35/18 no problem. I did have a problem before using 225/40/18 and 265/35/18 Pirelli nero m+s but after changing to michelin ps2 all good.

[douger]

Gary, what wheels are you running?

[gary328xi]

Originally Posted by douger

Gary, what wheels are you running?

Beyern Mesh 18 8.5 and 18 9.5..with michelin ps2 225/40/18 and 255/35/18.

[Disco Stew]

So... I'm pretty confused. Would this wheel/tire setup from an E46 M3 be OK on an E92xi?

235/40/18 ET40
255/35/18 ET19

Thanks!

[douger]

Originally Posted by gary328xi

Beyern Mesh 18 8.5 and 18 9.5..with michelin ps2 225/40/18 and 255/35/18.

Hey Gary, I sent you a PM -- would appreciate any more details you could give. I am interviewing service advisors in the area and will report back on this thread the details of what I find out.

[scb]

Originally Posted by matsarge

You're on the right track. It's not that the x-drive has trouble with A staggered setup, it sounds like it's having trouble with THAT staggered setup.

front 225/40/18 rear 255/35/18 is sold by bmw for the 335xi. it shouldn't cause problems

[joes3series]

+1 on tires/wheels size not being an issue. i have that tire and wheel size on the 330xi (it's stock with the 162's), so i don't think it's the tire or wheels size; maybe you need to re-initialize the TPMS/FTM again. Also, i know nothing about offsets, so maybe that is an issue.

[Carnage]

Originally Posted by scott brown

front 225/40/18 rear 255/35/18 is sold by bmw for the 335xi. it shouldn't cause problems

That's great but it's not a 335xi. These cars have notoriously sensitive DSC systems and it doesn't take much to throw them off.

[SGxi]

BMW Canada is running a special on summer wheels. The official setup for 18" are: 225/40 R18 (Front) and 255/35 R18 (Rear)

They also have a 19" setup, but it seems that 19" setup are not recommended for the xi's

Anyway, I got 189 wheels mounted on Yoko Advan S4s w/ 225/40/18 front and 255/35/18 rear and I have no problem so far with my E90 328xi.

Click here for link from BMW Canada.

[p166mmx73]

+1

I just mounted 189's on my e92 328xi with OEM RFT's and I have no problems either.

[Carnage]

Originally Posted by joes3series

+1 on tires/wheels not being an issue. i have that tire and wheel size on the 330xi (it's stock with the 162's), so i don't think it's the tire or wheels size; maybe you need to re-initialize the TPMS/FTM again. Also, i know nothing about offsets, so maybe that is an issue.

Your answer doesn't make sense. First you say that tires/wheels are not an issue then you say that maybe the offsets are an issue. If there's a offset problem, you have a wheel problem.

The people not having problems are running OEM wheels, the OP is not. The other poster with non-OEM wheels had problems until he switched tires. A staggered setup problem is more then just the size of the tires, the wheels are involved as well and that may be the source of the problem.

[douger]

Thanks for all of your posts guys. I still have not been able to get the dealer to take a look at the car -- I plan to do so in the next week. For the record, a couple of people have mentioned it may be the TPMS. My car has the rotational method, rather than the in wheel sensors and I have reset the system. The wheel offsets on the replicas are supposed to be identical to the OEM wheels. I am going to try to get the dealer to do a reset and if that does not work -- I will be putting the wheels and tires up for sale on the forum to someone with a RWD car. They are beautiful wheels -- look great on the car. Will get some pics soon.