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[alexwilcox29]

I recently sold my lci e90 for an lci e92 m sport and kept my 3 piece wheels for it

The e92 however is x drive and the fitment is pretty aggressive, fits the e92 better but a little but I'm wondering if there's any downsides of running this set up on x drive

Specs:
19x9.5 et29 235/35
19x10.5 et30 255/35

My goal is a "track stance" or oem plus fitment, I'm wondering if it's worth lowering the front a bit to achieve this
The 3 piece wheels rub the fender liner slightly so lowering it would not help, I will try to heat and bend the liner back a bit to see if that fixes the problem

Also will be rolling the rear fenders

Am I better off selling them and getting some m sport wheels for it to more easily achieve my goal? What do you guys think?

[fmc000]

On xDrive it's very important that the diameter of the front and rear wheels remains within a 1% difference and that it doesn't deviate more than 3% from original equipment. (*)

Original equipment setup for 19'' is 225/35 and 255/30 (less than 1% diff) whilst yours is 1.9%.

Moreover, you rear tires are 3.9% bigger than original equipment and your front tires are 3.7% bigger than original equipment.

In short, you're all wrong IMHO.

(*) "According to the experts at TireRack, the tires on xdrive cars can be different sizes from original equipment (but must be within 3% of original tire diameter), and they need to be within 1% (not to exceed) diameter size of each other to not cause problems."

https://tiresize.com/calculator/

[alexwilcox29]

Originally Posted by fmc000

On xDrive it's very important that the diameter of the front and rear wheels remains within a 1% difference and that it doesn't deviate more than 3% from original equipment. (*)

Original equipment setup for 19'' is 225/35 and 255/30 (less than 1% diff) whilst yours is 1.9%.

Moreover, you rear tires are 3.9% bigger than original equipment and your front tires are 3.7% bigger than original equipment.

In short, you're all wrong IMHO.

(*) "According to the experts at TireRack, the tires on xdrive cars can be different sizes from original equipment (but must be within 3% of original tire diameter), and they need to be within 1% (not to exceed) diameter size of each other to not cause problems."

https://tiresize.com/calculator/

Thank you for the info I totally forgot about this, I knew there was something limiting what sizes you could run I just had forgot!

I already took the wheels off I just put them on for one little test drive!

I played around with one of the calculators and it seems the closest I could get them from each other would be right around 2% with new tires

This is the current front set up (pictured) I currently have compared with oem, we are going off of just diameter right? Would that difference be just 1.1%?

If so the fronts are fine coupled, with a 255/30 rear the closest I can get between them is 1.8% so I guess it doesn't matter much!
Guess we are going back to the oem plus look!

Side note, anyone want to buy some style 199s while I search for m sport wheels

[mashimarho]

That'll look great. Change that rear tire to a 265/30 and hit the road!
You'll need some camber/fender adjustment, but I'm sure you already knew that.

[alexwilcox29]

Originally Posted by mashimarho

That'll look great. Change that rear tire to a 265/30 and hit the road!
You'll need some camber/fender adjustment, but I'm sure you already knew that.

Yes sir thank you! Can't wait to get this thing sitting right!

[mashimarho]

Originally Posted by alexwilcox29

Yes sir thank you! Can't wait to get this thing sitting right!

You bet! Anytime sir

[mrjimyjohn]

Originally Posted by fmc000

On xDrive it's very important that the diameter of the front and rear wheels remains within a 1% difference and that it doesn't deviate more than 3% from original equipment. (*)

Original equipment setup for 19'' is 225/35 and 255/30 (less than 1% diff) whilst yours is 1.9%.

Moreover, you rear tires are 3.9% bigger than original equipment and your front tires are 3.7% bigger than original equipment.

In short, you're all wrong IMHO.

(*) "According to the experts at TireRack, the tires on xdrive cars can be different sizes from original equipment (but must be within 3% of original tire diameter), and they need to be within 1% (not to exceed) diameter size of each other to not cause problems."

https://tiresize.com/calculator/

Do you know why they would state within 3% of OEM rolling diameter? I’m currently running 225/45/18 which is almost 5% bigger. I love that my speedo is now bang on and I can’t see how the transfer case could know a difference

[fmc000]

Originally Posted by mrjimyjohn

Do you know why they would state within 3% of OEM rolling diameter? I’m currently running 225/45/18 which is almost 5% bigger. I love that my speedo is now bang on and I can’t see how the transfer case could know a difference

No, sorry, i don't know. And I don't know why this should impact the TC either.