[oscars2212]

I have wheels/tires from a recently sold e93 that I would like to transfer to a M235i Xdrive if possible. I am having trouble figuring out if it will be an easy fit on the M235. They are a staggered set, fronts are 235/40R18 on 18x8 ET35 wheels, rears are 265/35R18 on 18x9 ET35 wheels.

Any help would be appreciated.

[trilax59]

I would recommend against a 235/265 set up for the F22 xDrive system. When I had xDrive, I called numerous companies and shops, and they said it will increase the stress on the transfer case and can cause it to wear prematurely. However, they said that 225/245 or 225/255 sizes would be fine.

Use the Apex Race Parts fitment guide for advice on wheel widths, offsets, and tire sizes.

Link: https://support.apexraceparts.com/hc...-Fitment-Guide

[OldCrow7xx]

Originally Posted by oscars2212

I have wheels/tires from a recently sold e93 that I would like to transfer to a M235i Xdrive if possible. I am having trouble figuring out if it will be an easy fit on the M235. They are a staggered set, fronts are 235/40R18 on 18x8 ET35 wheels, rears are 265/35R18 on 18x9 ET35 wheels.

Any help would be appreciated.

I actually just put very similar setup on the car. It looks and handles great. Im 225/40 on 8inch rim in the front and 255/35 on 9 inch rim in the back.

Is running 255 in the rear going to damage my drivetrain?

Car is FBO stage 2+ in the works...thats a-lot of torque if the system is unhappy.

Thanks in advance.

[alsrn1492]

Originally Posted by OldCrow7xx

I actually just put very similar setup on the car. It looks and handles great. Im 225/40 on 8inch rim in the front and 255/35 on 9 inch rim in the back.

Is running 255 in the rear going to damage my drivetrain?

Car is FBO stage 2+ in the works...thats a-lot of torque if the system is unhappy.

Thanks in advance.

+1 on this. As soon as I get rid of my E93, I'm settled on picking up a CPO F23. I have rims from my E93, and I would prefer to keep them for my F23, which would be the xDrive model.
The stock tires are staggered summers obviously 225/245 setup, and I'm wondering if I can run 225/245 for winters as well as 225/245 for summer that came from the factory without harming the system.
After the stock summers wear out, I will most likely move over to PSS 225/255 setup for the 9" rim in the rear with ET38 while the fronts being 8" with ET35.
If, in any chance, they rub, I will probably end up pulling the fenders or rolling them if that would solve the problem.
Doing hpfp on my E93 before the sale on Sunday, wish me luck

[marcthedark]

255/35 are closer in diameter to 225/40 than the stock 245/35 so are better for the x-drive

[OldCrow7xx]

Originally Posted by marcthedark

255/35 are closer in diameter to 225/40 than the stock 245/35 so are better for the x-drive

thanks bro- so diameter is all we have to be careful with???

[marcthedark]

Originally Posted by OldCrow7xx

thanks bro- so diameter is all we have to be careful with???

Not even diameter itself but the difference Front <> Back. So the car doesn't care is you have 225/40 or 235/40 all around as they have all the same diameter/rolling radius. But if you would go 225/40 and 275/40 then you add up with a front<>rear difference that isn't good for xDrive

[P2]

Originally Posted by marcthedark

255/35 are closer in diameter to 225/40 than the stock 245/35 so are better for the x-drive

I agree about the 255/35/18 being closer in diameter to the 225/40/18 in the front. But it seems to me the that the 255/35 is too big for the stock 8in wide wheels. I know the OP has something a bit different and am asking for myself.

I'm running the stock staggered in the summer of 225/40-18 and 245/35-18. If asked BMW six ways to Sunday if these are safe for x-drive and am consistently told yes. The best answer I got was the diameter difference is not large enough to even engage the xdrive system therefore no harm.

[dradernh]

Originally Posted by P2

it seems to me the that the 255/35 is too big for the stock 8in wide wheels.

The recommended rim-width range for a 255/35 tire is 8½-10". This page is one place where this can be seen: https://www.tirerack.com/tires/tires...omCompare1=yes.

On that page, Tire Rack explains rim-width range, including examples where automobile manufacturers specified a tire outside the recommended range (e.g., the E36 M3): https://www.tirerack.com/tires/tiret...jsp?techid=198.

On the page linked-to at the bottom of that page (https://www.tirerack.com/tires/tiret...jsp?techid=233), the Rack describes rim-width options and issues when going outside the recommended range; there, the following text appears:

"When road-going tires are pinched or stretched on wheels that are beyond their design range they can develop cracking, unusual or rapid wear patterns, or other failure conditions."

[P2]

Originally Posted by dradernh

The recommended rim-width range for a 255/35 tire is 8½-10". This page is one place where this can be seen: https://www.tirerack.com/tires/tires.jsp?tireMake=Michelin&tireModel=Pilot+Sport+ 4S&partnum=535YR8PS4SXL&vehicleSearch=false&fromCo mpare1=yes.

On that page, Tire Rack explains rim-width range, including examples where automobile manufacturers specified a tire outside the recommended range (e.g., the E36 M3): https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=198.

On the page linked-to at the bottom of that page (https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=233), the Rack describes rim-width options and issues when going outside the recommended range; there, the following text appears:

"When road-going tires are pinched or stretched on wheels that are beyond their design range they can develop cracking, unusual or rapid wear patterns, or other failure conditions."

That's all familiar now that I read it. I'll stick with the factory staggered or go back to square next time. Next time may come sooner than later as I'm not all that happy with the MPSS. My main point, and I could have emphasized it better, is that the factory staggered should do no harm.