[ARMYm3]

Originally Posted by Jnat

And none of you guys that are running spacers have diminished ride quality like high speed vibration almost like out of balance tires because that's been my experience unfortunately granted i've only used them once?

Not trying to insult your intelligence but did you clean everything before installing the spacers? Any debri, dirt or big accumulation of brake dust will produce an uneven surface for the spacer and end up with unwanted vibration. Before I installed mine I cleaned everything with a little bit of brake cleaner and a wired brush. Just my 2 cents!

[Jnat]

Originally Posted by ARMYm3

Not trying to insult your intelligence but did you clean everything before installing the spacers? Any debri, dirt or big accumulation of brake dust will produce an uneven surface for the spacer and end up with unwanted vibration. Before I installed mine I cleaned everything with a little bit of brake cleaner and a wired brush. Just my 2 cents!

No insult taken and i certainly can make a mistake but yes i did that.. funny thing is it was minimal spacers and only on the rear. Who knows maybe i got a bad spacer?

[ARMYm3]

Originally Posted by Jnat

No insult taken and i certainly can make a mistake but yes i did that.. funny thing is it was minimal spacers and only on the rear. Who knows maybe i got a bad spacer?

Yes could be a bad spacer

[Edgar_FriendlyX3M]

Originally Posted by Jnat

No insult taken and i certainly can make a mistake but yes i did that.. funny thing is it was minimal spacers and only on the rear. Who knows maybe i got a bad spacer?

Underinflated tires. What psi were you at during the higher speed ventures?

[M4Lou]

Originally Posted by Jnat

No insult taken and i certainly can make a mistake but yes i did that.. funny thing is it was minimal spacers and only on the rear. Who knows maybe i got a bad spacer?

Plenty of cheap spacers out there. You just need to take good notes, - vibration, etc. at what speed and then take them off and repeat the test. If vibration goes away, get new spacers.

What brand of spacer? Thickness, etc. ?

[Jnat]

Originally Posted by Edgar_FriendlyX3M

Underinflated tires. What psi were you at during the higher speed ventures?

Dinan 6mm spacer.
Definitely not under inflated... full disclosure here... and i say this only for informational purposes only, although i'm capable of making a mistake like air pressure... i'm also a Dealership Service Director for 33 + years (so i laugh at some of the comments in the forums calling some dealerships / stealerships, unfortunately i guess our industry has earned that reputation) Anyway the vibration happened right after the install of the spacers, i removed, cleaned the wheel and hub area again, no bueno, removed the spacers and the vibration went away. I put the spacers back on and vibration was back (note that i'm talking a subtle issue not a crazy vibration)... anyhow, not a great experience but maybe it was just a bad spacer.

[M4Lou]

Originally Posted by Jnat

Dinan 6mm spacer.
Definitely not under inflated... full disclosure here... and i say this only for informational purposes only, although i'm capable of making a mistake like air pressure... i'm also a Dealership Service Director for 33 + years (so i laugh at some of the comments in the forums calling some dealerships / stealerships) Anyway the vibration happened right after the install of the spacers, i removed, cleaned the wheel and hub area again, no bueno, removed the spacers and the vibration went away. I put the spacers back on and vibration was back (note that i'm talking a subtle issue not a crazy vibration)... anyhow, not a great experience but maybe it was just a bad spacer.

The dinan's certainly seem like quality spacers - I've got a pair, just have not run them.

I've run bimeccs (I like - kinda heavy) and BMS, both with success.

Bimecc, FC and even dinan seem well made in the hand. BMS feel inexpensive.

Anyway - I'd ditch those and get another set and honestly, another brand!

[Jnat]

Originally Posted by M4Lou

The dinan's certainly seem like quality spacers - I've got a pair, just have not run them.

I've run bimeccs (I like - kinda heavy) and BMS, both with success.

Bimecc, FC and even dinan seem well made in the hand. BMS feel inexpensive.

Anyway - I'd ditch those and get another set and honestly, another brand!

Well it certainly seems that my problem is isolated so maybe i'll try again at some point... thanks everyone for the feedback.

[M4Lou]

Originally Posted by Jnat

Well it certainly seems that my problem is isolated so maybe i'll try again at some point... thanks everyone for the feedback.

I've got a few spacers of different manufacturers - I'd really encourage everyone to really look at how they fit and the contact. My (new to me) 963m's and factory 826 wheels that came with my M4 don't have a huge contact area on the rotor hub or hat. If you put on a super nice FC spacer - the contact area is even less!

While the FC is one of the nicest, best made spacers out there - I don't feel comfortable running it on my 963m's. Anyway - I'm rambling.

Point is - for all* of these (frequently chinese) spacers, take a good look at quality and how they fit - they are in a pretty important area. JMHO.

Good luck - let us know what other spacers you try and how the vibration deal settles out.

[Potatohead-M2]

I'm sure this has been answered a hundred times in this thread so my apologies for not going through the whole thing...

Does the 265/40R21 fit on the factory wheel in the front with no spacer?

[Jnat]

Originally Posted by Potatohead-M2

I'm sure this has been answered a hundred times in this thread so my apologies for not going through the whole thing...

Does the 265/40R21 fit on the factory wheel in the front with no spacer?

I'm running the 265/40-21 all around so yes. The 265's in the rear aren't enough tire though on tune with ethanol so... I'm debating trying something different like 275/40-21 all four...for a more meaty look...

[anakratis]

Someone mentioned this before in here but I just wanted to make sure:

Tire Rack has BMW star spec set listed just below the MB MO1 set, but apparently the rear tire is for the X5 front?



Therefore, one should get the MO1 set instead.

Finally, is there a general consensus on 255/295 vs 265/295? More traction and wet performance would be a good-to-have in the PNW.

[Kevin_The_Clean1]

Originally Posted by anakratis

Someone mentioned this before in here but I just wanted to make sure:

Tire Rack has BMW star spec set listed just below the MB MO1 set, but apparently the rear tire is for the X5 front?

Therefore, one should get the MO1 set instead.

Finally, is there a general consensus on 255/295 vs 265/295? More traction and wet performance would be a good-to-have in the PNW.

Yes, get the M01 spec because that's a true front & rear setup. If you get the star spec then you'll be putting tires that were designed for the front of an X5M on the rear of your X3M & you definitely don't want that. And again, it's highly recommended that on a staggered wheel / tire setup you only go +3 for the rear. If you go 255 / 295 that will be a + 4 & trust me, you don't want that either. Leads to way too much understeer up there. I'm the original creator of this successful thread & therefore I've done my homework on this subject many times over... !

[anakratis]

Originally Posted by Kevin_The_Clean1

Yes, get the M01 spec because that's a true front & rear setup. If you get the star spec then you'll be putting that were designed for the front of an X5M on the rear of your X3M & you definitely don't want that. And again, it's highly recommended that on a staggered wheel/tire setup you only go +3 for the rear. If you go 255/295 that will be a + 4 & trust me, you don't want that either. Leads way too much understeer up there. I'm the original creator of this successful thread & therefore I've done my homework on this subject many times over... !

Got it thank you. Reading all the comments on here looks like the 265/295 setup also leads to reduced tramlining. Wife will also be driving this car and she likes to go sonic so whatever leads to more stability is ideal.

[keywin]

anybody running mudflaps with the wider tires? they fling so much stuff up towards my car

[bobo13]

Hi,

Has anyone tried the Goodyear Eagle F1 on the X3/4 M C?

[EricP3]

Originally Posted by anakratis

Got it thank you. Reading all the comments on here looks like the 265/295 setup also leads to reduced tramlining. Wife will also be driving this car and she likes to go sonic so whatever leads to more stability is ideal.

I don't see how that is possible. If anything wider tires would increase tramlining. I could be wrong but seems off to me. I did 295s in the back but stuck with 255 in the front. I get a bit of tramlining but I am used to it as I've had a few BMWs with a lot of tire.

[EricP3]

Originally Posted by keywin

anybody running mudflaps with the wider tires? they fling so much stuff up towards my car

I run front mudflaps but not rear, they make a huge difference and mine are barely noticeable.

[keywin]

Originally Posted by EricP3

I run front mudflaps but not rear, they make a huge difference and mine are barely noticeable.

do you mind sharing which ones you use?

[kidxin]

255/295 or 265/295. What do you guys think?

[EricP3]

Originally Posted by kidxin

255/295 or 265/295. What do you guys think?

I only went 255 because they didn't have 265 in stock. Sometimes I wish I had 265 because the tire profile would look closer to the 295 in the back. However, I have also read people actually like 255 in front for the steering feel. I would probably get 265 in front if i did it again and when I replace.

[EricP3]

Originally Posted by keywin

do you mind sharing which ones you use?

I have these,

Had them on my F80 as well. For some reason people on these forums aren't too big on them but I recommend 10/10