[Rzundel]

Today I just installed my new HRE FF21 wheels with Continental ExtremeContact Sport 02 tires. Looks amazing! However I’m running into a little problem. My front driver side tire 245/35/20 has a slight rub on the lower support mount on the strut. This mount sits right above the tire. The tire is about 1mm too tall. I was surprised by this because a lot of people on this forum are running this size tire on a 20x9 wheel et25 without any problems. My right front tire is tight but fine. Not sure what to do at this point. The easy fix is to go with 235/35/20 front tires but I really was hoping for the 245 front. Im running the 285/30/20 in the rear with no problem. Anyone have any recommendations other than buy new tires?

[HFW003]

5mm spacer?

[Rzundel]

Originally Posted by HFW003

5mm spacer?

I’m not sure a spacer will solve the problem. The strut mount sits right above the tire. It’s the diameter of the tire that is the problem not the width. I’m surprise others with a 245/35/20 fitment aren’t having this same problem

[larrylam646]

Originally Posted by Rzundel

Anyone have any recommendations other than buy new tires?

Is the swivel bearing (steering knuckle) on the left-side sitting higher on the strut when compared to the right-side?

If so, try lowering the left swivel bearing to match that of the right-side. This adjustment may give you the clearance you need.

You may wish to consider checking/adjusting your wheel alignment, depending on how much you lower the swivel bearing.

[Rzundel]

Originally Posted by larrylam646

Is the swivel bearing (steering knuckle) on the left-side sitting higher on the strut when compared to the right-side?

If so, try lowering the left swivel bearing to match that of the right-side. This adjustment may give you the clearance you need.

You may wish to consider checking/adjusting your wheel alignment, depending on how much you lower the swivel bearing.

I don’t know enough about swivel bearing to know how it’s sitting. The tire is rubbing against the lower strut mount that sits directly on top of the tire. I will need to look into this

[larrylam646]

Originally Posted by Rzundel

I don’t know enough about swivel bearing to know how it’s sitting. The tire is rubbing against the lower strut mount that sits directly on top of the tire. I will need to look into this

Attached is a pic of how the swivel bearing (1) attaches to the lower-end of the strut (2). Note where the top of the swivel bearing rests relative to the taper on the strut.

Pic is from ISTA+

[Rzundel]

Originally Posted by larrylam646

Attached is a pic of how the swivel bearing (1) attaches to the lower-end of the strut (2). Note where the top of the swivel bearing rests relative to the taper on the strut.

Pic is from ISTA+

Thank you for sharing. Got it now. The good news is my shop was able to make a small adjustment to the lower strut mount and it fixed the problem. Just needed to move it 1-2mm. All good. Thanks for everyone’s input.

[clone1008]

Originally Posted by Rzundel

Thank you for sharing. Got it now. The good news is my shop was able to make a small adjustment to the lower strut mount and it fixed the problem. Just needed to move it 1-2mm. All good. Thanks for everyone’s input.

Kind of a crappy thread title when the fix had nothing to do with the tires.

[Rzundel]

Originally Posted by clone1008

Kind of a crappy thread title when the fix had nothing to do with the tires.

It had everything to do with the tires. They are too tall and rubbed against the strut mount! I wanted to make sure other considering a 245 front that they should expect the same problem. The shop had to alter the strut mount to accommodate the tires.

[clone1008]

Originally Posted by Rzundel

It had everything to do with the tires. They are too tall and rubbed against the strut mount! I wanted to make sure other considering a 245 front that they should expect the same problem. The shop had to alter the strut mount to accommodate the tires.

I didn't miss anything. You had an adjustment made to something that was out of adjustment from the factory. It had nothing to do with your tires, they ARE NOT "TOO TALL". There have been many who have installed 245 fronts and had no problems what so ever, myself included. https://g20.bimmerpost.com/forums/sh....php?t=1840361

[Rzundel]

Originally Posted by clone1008

I didn't miss anything. You had an adjustment made to something that was out of adjustment from the factory. It had nothing to do with your tires, they ARE NOT "TOO TALL". There have been many who have installed 245 fronts and had no problems what so ever, myself included. https://g20.bimmerpost.com/forums/sh....php?t=1840361

I’m glad to hear that yours worked without any problems. Car looks good. I was surprised on the rubbing based on my research in the forum. With that said I did experience rubbing with a brand new 2024 G22. I think the caution was warranted. Maybe mine was a one off situation but maybe it wasn’t. Others should be aware. BTW, I just did a search on this and found that others have had similar issues. We are talking about a very tight clearance to begin with. 1-2mm doesn’t leave much room for any variance. With that said I’m still glad I am running a 245/285 setup. Looks great.

[The1NickJohnson]

I just did hre FF10 and this is my clearance..

[Rzundel]

Originally Posted by The1NickJohnson

I just did hre FF10 and this is my clearance..

. What tire are you running? Mine looks the same but the drivers side was the one rubbing. As you can see there is a very tight clearance. I was probably just 1mm off. Not sure what the shop did to fix it. They said they made an adjustment to the lower mount.

[The1NickJohnson]

Originally Posted by Rzundel

. What tire are you running? Mine looks the same but the drivers side was the one rubbing. As you can see there is a very tight clearance. I was probably just 1mm off. Not sure what the shop did to fix it. They said they made an adjustment to the lower mount.

Conti DWS 06

[BlackSahara]

I wonder if this has to do with the Adaptive Suspension? Do you have the Adaptive M suspension? I was going to pull the trigger on 245/40/19, on factory 19x8 rims since others had said they'd work, but after further research it seems cars with the Adap sus have the same issue you describe.....and only on driver side. Did shop just bend the spring perch up enough to clear?

[Rzundel]

Originally Posted by BlackSahara

I wonder if this has to do with the Adaptive Suspension? Do you have the Adaptive M suspension? I was going to pull the trigger on 245/40/19, on factory 19x8 rims since others had said they'd work, but after further research it seems cars with the Adap sus have the same issue you describe.....and only on driver side. Did shop just bend the spring perch up enough to clear?

I don’t have adaptive suspension. I have m sport suspension. Yes only on drivers side and I do believe the shop did slight bend the spring perch. Only about 1mm and all good. The 245/35/20 really is the way to go. Just realize that it might require a slight adjustment.

[jcantanixon]

Originally Posted by Rzundel

I don’t have adaptive suspension. I have m sport suspension. Yes only on drivers side and I do believe the shop did slight bend the spring perch. Only about 1mm and all good. The 245/35/20 really is the way to go. Just realize that it might require a slight adjustment.

Same thing here. Fitted 245 35 20 Bridgestone tires and the passenger side has a 1/4 inch clearance, but the driver side had 0 (only able to slide a piece of paper between). I tried removing the 18/16mm bolt and tapping down on the steering knuckle, but it wouldn't budge since I didn't have a spreading tool, so I just bent the spring perch out of the way about 1mm" for now. I'll try again once I get the strut spreader socket.

Just wanted to let you know you weren't a one off. Funny how it was the same side. I have a 2021 with the adaptive suspension.

Update: I used a strut spreader tool and dropped the left knuckle down 2mm to match the right side. No more rubbing issues. Thanks larrylam646 for the suggestion.