[XR]

Hello everyone, I am new to the forme here, just bought a lightly used M240i XDrive (2019).

I know I am beating the dead horse, but would still very much appreciate your help. I purchased a set of wheels / tires for winter as follows:

Enkei Raijin 18x8 ET42
Michelin X-Ice IX3 225/45 R18.

I am based in Toronto and my initial idea to get some more ground clearance and pothole protection for winter, therefore I went 225/45 rather than 225/40. I know some people on this forum cleared 225/45, but they all had an ET of 45, while I have 42 - not sure if I would make any difference (with ET30 I know it was rubbing badly). So the questions I would like to ask:

- do you think it will be rubbing when turning the wheel to lock?
- given that this is not an OEM-recommended size, any warranty-related risks?
- Am I losing much in terms of performance (i.e. - unsprung weight, higher center of gravity, gearing ratio etc.)?

Unfortunately the seller would not accept the return, so the only option would be to try to sell the tire at a loss.

Many thanks in advance for your help!

[TrboMike]

Offset of 42 is even better. 225 is not wide, I dont think you'll have a problem.

The topic says 245/45-18? Typo? That might not fit.

[XR]

Originally Posted by TrboMike

Offset of 42 is even better. 225 is not wide, I dont think you'll have a problem.

The topic says 245/45-18? Typo? That might not fit.

This is a typo, thank you very much, I’ve just fixed it. I remember some people mentioned that with the offset of 30 it starts to rub against the wheel arches, this is why I got concerned.

[TrboMike]

30 puts the tire close to the fender. 42 is almost perfecly in the middle. 225 is close to stock tire width. So you should be fine.

[XR]

Originally Posted by TrboMike

30 puts the tire close to the fender. 42 is almost perfecly in the middle. 225 is close to stock tire width. So you should be fine.

Thank you very much!

[aerobod]

I'm running 225/45-18 Sottozero 3 winter tyres on 18x8 ET45 wheels, no rubbing or issues overall. The OP shouldn't have any issues, the most likely contact area with the taller tyres is on full lock were the tyre turned inward comes closest to the bottom front of the fender liner. With my setup I have about 10mm of clearance there.

[XR]

Originally Posted by aerobod

I'm running 225/45-18 Sottozero 3 winter tyres on 18x8 ET45 wheels, no rubbing or issues overall. The OP shouldn't have any issues, the most likely contact area with the taller tyres is on full lock were the tyre turned inward comes closest to the bottom front of the fender liner. With my setup I have about 10mm of clearance there.

Thank you very much for your help! My purchase was actually inspired by your earlier posts on this forum. As such, I understand the difference between our setups is the following:

- ET45 in your case vs ET42 in my case
- Sottozero in your case vs XIce in my case.

Hopefully none of this is significant enough to eat the 10mm clearance.

Really appreciate your response, thank you!

[XR]

Unfortunately it did not fit. The front side of the left wheel rubs against the arch when the wheel is turned right - I will try to post the pics later. I feel if I had 45 offset, it could marginally work.

Now I am wondering, if I go with 235/40 - would it work?

Or perhaps slight rubbing on one side is not an issue, and I should leave it as is?

[aerobod]

If it is just on the one side, it may be possible to adjust the wheel well liner or lower bumper securing screws a bit to gain a couple of mm of extra clearance on that side.

[XR]

Originally Posted by aerobod

If it is just on the one side, it may be possible to adjust the wheel well liner or lower bumper securing screws a bit to gain a couple of mm of extra clearance on that side.

That's a great idea! Thank you for the hint!

[TrboMike]

So to confirm you have a 225/45-18 on 42offset and it rubs?? Where and when?

I put my size (245/40-18 on 18x8.5 40 offset) and yours into a tire offset calculator and your tire may be .15" taller in the middle but its .43" father from the suspension at the edge and .27" farther from the fender at the edge.

Is this car way lowered? 225 is not a wide tire.

And for your question switching to a 235/40-18 42offset from 225/45-18 42 offset:
The tire will be .6 inches shorter, so you will gain half that .3 inches between the top of the middle of the tire and the fender, but at the same time you are going 10mm wider in the tire so between the shorter and wider the edges of the tire will be .2" closer to suspension and .2" inches closer to fender. Unless you are rubbing the top of the tire in the middle, this will be worse.

Are you sure your wheels are 42offset?

[XR]

Originally Posted by TrboMike

So to confirm you have a 225/45-18 on 42offset and it rubs?? Where and when?

I put my size (245/40-18 on 18x8.5 40 offset) and yours into a tire offset calculator and your tire may be .15" taller in the middle but its .43" father from the suspension at the edge and .27" farther from the fender at the edge.

Is this car way lowered? 225 is not a wide tire.

And for your question switching to a 235/40-18 42offset from 225/45-18 42 offset:
The tire will be .6 inches shorter, so you will gain half that .3 inches between the top of the middle of the tire and the fender, but at the same time you are going 10mm wider in the tire so between the shorter and wider the edges of the tire will be .2" closer to suspension and .2" inches closer to fender. Unless you are rubbing the top of the tire in the middle, this will be worse.

Are you sure your wheels are 42offset?

Thank you so much for the detailed response! The offset is definitely 42, I've got Enkei Raijin wheels. Attached are some pictures - the rubbing only happens at the corner of the tire, when the wheel is turned in half-way. There is a it of a hump on the plastic liner of the wheel arch - this is where the contact happens - I've highlighted this point in red.