[12eb3L]

Mods delete

[.BMW.]

F30 xDrive with M Sport has staggered wheels as factory options:

Style 400:
F: 8x18" ET34, 225/45-18
R: 8.5x18" ET47, 255/40-18
or
Style 403:
F: 8x19" ET36, 225/40-19
R: 8.5x19" ET47, 255/35-19

[crono06]

Yes. Just make sure the rolling diameters are the same (or very close).

[E30toF30]

My stock rims on 335xi is:

20" x 8" fronts - tires 225/35/R20
20" x 8.5" rears - tires 255/30/R20

[613Bimmer]

Originally Posted by crono06

Yes. Just make sure the rolling diameters are the same (or very close).

Yup, BMW claims the front and rear tire diameters should only differ by ~1% at the most to avoid damage to the xDrive system. The tires should also differ by 3% diameter compared to the original wheels at the most.

[Polo08816]

For an xDrive vehicle, I think you're better off going with a square setup. It's more practical and probably has more tire options (as a set).

[nickm7]

F30 XDRIVE planning to run 235/35/19 front and 265/30/19 rear. Will I be okay with the rolling diameter? I'm having a hard time understand how to use the calculator. If not, what would be a good recommended tire size on a 19" rim?

[bahasad]

Originally Posted by nickm7

F30 XDRIVE planning to run 235/35/19 front and 265/30/19 rear. Will I be okay with the rolling diameter? I'm having a hard time understand how to use the calculator. If not, what would be a good recommended tire size on a 19" rim?

I ran this for a while, car seemed okay functionality wise. But definitely a lot more understeer, the tires are a little short for the F30, no rotation, and the car follows crowns in the road much more.

[nickm7]

Originally Posted by bahasad

I ran this for a while, car seemed okay functionality wise. But definitely a lot more understeer, the tires are a little short for the F30, no rotation, and the car follows crowns in the road much more.

What tire setup is yours now? I had these installed today and it seems a little jerky at about 15-20mph and again at about 40ish. Traction control light occasionally comes on- now I'm beginning to doubt my tire size selection.

[bahasad]

Originally Posted by nickm7

What tire setup is yours now? I had these installed today and it seems a little jerky at about 15-20mph and again at about 40ish. Traction control light occasionally comes on- now I'm beginning to doubt my tire size selection.

I did experience some jerkiness too but I didn't believe it to be a huge issue. If it's really bad, something could be up with the transfer case, but it shouldn't unless tire size difference is over 1%.
I never experienced any lights out of the ordinary.
My old setup was 235/35/19 F on 19x8.5 and 265/30/19 R on 19x9.5

My current setup is square tires (245/40/19) on lightweight square rims (19x8.5). Car feels very neutral, much more responsive/nimble, and doesn't follow road imperfections like it used to.

[nickm7]

Originally Posted by bahasad

I did experience some jerkiness too but I didn't believe it to be a huge issue. If it's really bad, something could be up with the transfer case, but it shouldn't unless tire size difference is over 1%.
I never experienced any lights out of the ordinary.
My old setup was 235/35/19 F on 19x8.5 and 265/30/19 R on 19x9.5

My current setup is square tires (245/40/19) on lightweight square rims (19x8.5). Car feels very neutral, much more responsive/nimble, and doesn't follow road imperfections like it used to.

Yeah that's good to know. Shouldn't be the transfer case, I didn't have any issues in the past. Like you said, I get slight jerkiness, but I haven't really driven it enough to really get a good feeling for it. (Maybe about 15 miles so far)

Like I mentioned that rolling distance calculator I'm having trouble with understand (does offset really matter?) and what not. Really trying to see if my rolling distance it correct within 1% as I'm
Not trying to damage the xDrive system of I'm out of the parameters. I'd rather cough up the extra few bills for new tires rather than a few grand down the road for major repairs.

[bahasad]

Originally Posted by nickm7

Yeah that's good to know. Shouldn't be the transfer case, I didn't have any issues in the past. Like you said, I get slight jerkiness, but I haven't really driven it enough to really get a good feeling for it. (Maybe about 15 miles so far)

Like I mentioned that rolling distance calculator I'm having trouble with understand (does offset really matter?) and what not. Really trying to see if my rolling distance it correct within 1% as I'm
Not trying to damage the xDrive system of I'm out of the parameters. I'd rather cough up the extra few bills for new tires rather than a few grand down the road for major repairs.

Honestly, I was getting nervous of the staggered setup even though the 235/35 and 265/30 was within 1%.

BMW sells 225/40 and 255/35 on certain tire/rim packages even on the xdrives. That may be another option if you want to stick with staggered. I think that may be like a 0.25 or 0.5% difference.

Alternatively, depending on your wheel widths, might be able to get square tires on all 4 of them, even though you wouldn't be able to rotate them, you would maintain the same rolling diameter.

[WWM3]

Originally Posted by bahasad

I did experience some jerkiness too but I didn't believe it to be a huge issue. If it's really bad, something could be up with the transfer case, but it shouldn't unless tire size difference is over 1%.
I never experienced any lights out of the ordinary.
My old setup was 235/35/19 F on 19x8.5 and 265/30/19 R on 19x9.5

My current setup is square tires (245/40/19) on lightweight square rims (19x8.5). Car feels very neutral, much more responsive/nimble, and doesn't follow road imperfections like it used to.

I see you have apex wheels. I was thinking about ordering 19'' EC-7s w/ PSS as my summer set up for the 435i xDrive I just ordered, but unsure if I want to do a staggered set-up or square. They sell a 19X9.5 ET 43.

[bahasad]

Originally Posted by WWM3

I see you have apex wheels. I was thinking about ordering 19'' EC-7s w/ PSS as my summer set up for the 435i xDrive I just ordered, but unsure if I want to do a staggered set-up or square. They sell a 19X9.5 ET 43.

I have 19" Apex PS-7s w/ Michelin PS AS 3 (the all season version of the PSS). My setup is 19x8.5, ET 35, 245/40 all around. Fitting a 9.5" wide wheel in the front with minimum 255 tires seems like it wouldn't fit, either poking out too much/rubbing on the fenders and strut side. Maybe someone more experienced can comment/who ran this size.

I would get the 8.5s, add spacers as you see fit. My fronts are pretty flush, I am trying to add spacers to the rear to get a little flush/poke.
Or maybe 19x9".

[WWM3]

Originally Posted by bahasad

I have 19" Apex PS-7s w/ Michelin PS AS 3 (the all season version of the PSS). My setup is 19x8.5, ET 35, 245/40 all around. Fitting a 9.5" wide wheel in the front with minimum 255 tires seems like it wouldn't fit, either poking out too much/rubbing on the fenders and strut side. Maybe someone more experienced can comment/who ran this size.

I would get the 8.5s, add spacers as you see fit. My fronts are pretty flush, I am trying to add spacers to the rear to get a little flush/poke.
Or maybe 19x9".

Nice set up!

I meant 19x8.5 ET 35 w/ 235/35 and 19x9.5 ET 43 w/ 265/30.

[bahasad]

Originally Posted by WWM3

Nice set up!

I meant 19x8.5 ET 35 w/ 235/35 and 19x9.5 ET 43 w/ 265/30.

Are you lowered?
If not, than those tires are quite short for the F3x chassis. I'd go for 225/40 and 255/35 which is an oem fit that BMW specs out I believe.

[WWM3]

Originally Posted by bahasad

Are you lowered?
If not, than those tires are quite short for the F3x chassis. I'd go for 225/40 and 255/35 which is an oem fit that BMW specs out I believe.

Planning on doing Dinan Springs. And those are the OEM tire sizes. Maybe I should go with those. I was worried the 255 on the 9.5 would be stretched?

[nickm7]

Originally Posted by WWM3

Planning on doing Dinan Springs. And those are the OEM tire sizes. Maybe I should go with those. I was worried the 255 on the 9.5 would be stretched?

255 on a 9.5" rim would be s t r e c h e d, imo. I have a 265 on a 9.5" and even that isn't nicely flush.

My two cents.

[nickm7]

Originally Posted by bahasad

Honestly, I was getting nervous of the staggered setup even though the 235/35 and 265/30 was within 1%.

BMW sells 225/40 and 255/35 on certain tire/rim packages even on the xdrives. That may be another option if you want to stick with staggered. I think that may be like a 0.25 or 0.5% difference.

Alternatively, depending on your wheel widths, might be able to get square tires on all 4 of them, even though you wouldn't be able to rotate them, you would maintain the same rolling diameter.

This may sound stupid, but can I run same profile tires on a staggered set up to eliminate the xDrive issues?
Say 235/35/19 front and 265/35/19 rear?
How does a wider rim affect the xDrive system?

[MCL_F32]

Always been debating this topic myself when I brought wheels for my x-drive car. Ended up going with a square set up 20x9 all around 245/35/20 I believe

Someone told me that the difference between rim needs to be .5 or less and heard a few bad stories about straggered on x-drive so made the decision to play it safe.

[WWM3]

Originally Posted by nickm7

This may sound stupid, but can I run same profile tires on a staggered set up to eliminate the xDrive issues?
Say 235/35/19 front and 265/35/19 rear?
How does a wider rim affect the xDrive system?

I'm still considering 235/35/19 and 265/30/19. The rolling diameter difference is less than 1% which is what BMW recommends.

However, maybe 245/40/19 or 245/35/19 square might be more practical and neutral.

[snj49er]

Originally Posted by nickm7

This may sound stupid, but can I run same profile tires on a staggered set up to eliminate the xDrive issues?
Say 235/35/19 front and 265/35/19 rear?

The profile is a percentage of tread width, so if the tire gets wider, the sidewall and diameter also grows. The overall tire diameters on the 2 sizes you mentioned are 25.5" and 26.3"...3% different. The OEM tire diameter is 26" +/-. 235/40-19 and 265/35-19 are almost identical at around 26.3".

You can see how this works with any tire calculator: http://www.e90post.com/forums/forumdisplay.php?f=12