[nkoul_96]

Hello,

I have the 2013 335i x-drive M-sport.

I am currently shopping for some 19" wheels. I am either sold on the new Vossens VPS-311 or Vorsteiner V-FF 103.

Looking at these wheels I was wondering if it is fine to get staggered wheels for x-drive cars. I always thought and read in some places that it might not be good for the car to have different sized wheels for the front/rear.

Also if you have any suggestions on wheel size/width/offset that would be great also.

Any opinions and answers are welcome. Thank you.

[ajrettke]

My E90 335xi had staggered's....Just use this formula and get very close to the same circumference.

Algebra (fun stuff):
tire rating:
A/B-C

circumference=(C+(A*B)/2540*2) * 3.1415

What this is doing is taking your wheel diameter, C, adding the sidewall height, which is A*B (B is a ratio of tire width to sidewall) and converting it from mm to inches (with 2540) and *2 because you have sidewall on top and bottom, and of course we have pi.

So, on my E90 335xi I had:

225/40-18
255/35-18

So my fronts were:
78.8096" in circumference

And rear:
78.62408

So they were within 0.25% of each other. So those are pretty damn close IMO.

At 19" and similiar setup, You're looking at:
front:
225/35-19=79.168

rear:
255/30-19=78.611 delta~.7%
265/30-19=79.3538 delta~.25%

Now, I'm pretty sure 255's are much more common, but I'd try and find 265's.

[nkoul_96]

Hahaha Nooooooo not algebra!!!

I am most probably going to have stretched tires on. I like that look much more.

[ajrettke]

The post just below this....he lists VMR wheels, with "beefy" tires:
http://f30.bimmerpost.com/forums/sho....php?t=1081833

Even has the offsets. One shot one kill.

Those are nearly identicle circumferences:


Delta of .077%...VERY small difference.
Front:
235
35
19
80.03404134
Rear:
275
30
19
80.09588189

[963mw]

Originally Posted by ajrettke

My E90 335xi had staggered's....Just use this formula and get very close to the same circumference.

Algebra (fun stuff):
tire rating:
A/B-C

circumference=(C+(A*B)/2540*2) * 3.1415

What this is doing is taking your wheel diameter, C, adding the sidewall height, which is A*B (B is a ratio of tire width to sidewall) and converting it from mm to inches (with 2540) and *2 because you have sidewall on top and bottom, and of course we have pi.

So, on my E90 335xi I had:

225/40-18
255/35-18

So my fronts were:
78.8096" in circumference

And rear:
78.62408

So they were within 0.25% of each other. So those are pretty damn close IMO.

At 19" and similiar setup, You're looking at:
front:
225/35-19=79.168

rear:
255/30-19=78.611 delta~.7%
265/30-19=79.3538 delta~.25%

Now, I'm pretty sure 255's are much more common, but I'd try and find 265's.

So would 245/45R18 in the front work with 255/40R18 in the rear? I am really lost about the X-Drive system tire requirement. Any help would be appreciated. I have the 397 rims if that makes a difference.

[.BMW.]

Originally Posted by nickhelou

So would 245/45R18 in the front work with 255/40R18 in the rear? I am really lost about the X-Drive system tire requirement. Any help would be appreciated. I have the 397 rims if that makes a difference.

245/45-18 front and 255/40-18 rear will not work with xDrive. The front tire is 2.5% taller than the rear (should be within 1% with xDrive).

But why do you want staggered tires on square 397 wheels?

Just fit 245/45-18 square, then you also have the possibility to rotate the tires!

[atomic335]

No issue using a staggered setup. In Europe the xdrive msport models come standard with a staggered setup. By default this is 225/45R18 front 255/40R18 rear.

[VMRWheels]

You can use a staggered setup with xDrive. You just want to make sure your rolling diameters are within 1% of each other. You can use this tool to check rather than having to do all the math yourself. Some of the more common sizes are 235/35 and 265/30 or 235/35 and 275/30. We normally recommend 19x8.5 ET35 in the front and 19x9.5 ET45 in the rear.

[tboooe]

Originally Posted by VMRWheels

We normally recommend 19x8.5 ET35 in the front and 19x9.5 ET45 in the rear.

Thats a pretty conservative offset. Are you assuming the car is not lowered?