Went to 20s and need help

[Driver8]

Mickey - The metal centering rings are more durable and less prone to deformation over time. Get them if you can. They ARE better. In terms of fit, your ring should fit nice and snug over the hub. You don't want it to be so tight you have to pound it on nor should it have any play or otherwise hang loosely off your hub center.

Let us know what you find.

Mike

[powers1]

Originally Posted by MiCkEy

Sheeeeesh. Here is a head scratcher.

I took the wheels off yet again (probably the 12th time) to check the center rings (I seem to have bigger biceps because of all the heavy lifting, jacking the truck (no pun) than when I was single and lonely) and even though the center rings did not have any AFS marking on them, I found a little white stickie that says "74.1mm/72.56mm". What does this mean? Do I have the wrong center ring? Why the two numbers? the center rings seem to be in not so good shape so I have taken them off. Are aluminum ones better than the plastic ones?

thanks all. I guess I am getting close to solving the mystery ( i hope)

Hi Mickey,
The AFS wheels you have will fit other Bmws as well!I say this in order to explain to you what the numbers on the centre rings mean.74.1 is the mesurement on the centre hub of the AFS Wheels ,72.6 is the measurement of the X5s wheel hub,thus AFS supplied you with those rings to give you a perfect fitment.
For example and M5 has a 74.1 wheel hub fitting,so the AFS wheels for it will not need the centre rings.It will be a straight bolt-on.
In my experience with Wheels,mostwheel manufactrures(even Replicas ) usually supply direct fitment wheels for BMW because of the small difference between 74.1 and 72.6 wheel hubs and the weight of the wheel itself may cause vibrations as in your case.All the wheels I have sold here for X5s are all direct fitment and hence never had vibration issues related to wheel fitting.

Maybe you call call AFS and ask them to exchange your wheels for a direct 72.6mm fitment!

If your centre rings are not in good condition ,get new ones!I dont think that by getting aluminium rings will resolve your problem but if you get new rings ,its better to go for the aluminium ones.

[X5Andrew]

I know another thig to consider as well. When you get them remounted and balanced, take it easy on them for the first few days. A freshly mounted tire can slip and spin a little if it is driven to hard. Just another thought.

[zypheR911]

Another thought, 17 to 20 is a huge upgrade, bigger wheels = more tire on the ground = rougher ride = stickier. Mabye theres a difference in ride quality because of the size of the upgrade?

[powers1]

Originally Posted by zypheR911

Another thought, 17 to 20 is a huge upgrade, bigger wheels = more tire on the ground = rougher ride = stickier. Mabye theres a difference in ride quality because of the size of the upgrade?

Yes.A difference in ride quality!But he shouldnt be experiencing vibrations!

[MiCkEy]

Ok so I have been thinking about the issue for sometime and experimenting. I think I may have found the solution. The issue is/are the centric rings.

I swapped the rings for the left and right front and I do not have the vibration going from 55-65 anymore. The ride is rock solid...no shimmy..nothing..ziltch..nada.

I have ordered aluminum/metal rings and the plastic ones that I took off do look to be in bad shape before swapping them. I think with the weight of the tires and the rings being being plastic, overtime got deformed. I am 99% sure this is what it was. This also explains why initially there was no vibration.

Will update once I get new rings. I am also going to test at higher speeds (70+)

Thanks for everyone for their help.

[powers1]

Originally Posted by MiCkEy

Ok so I have been thinking about the issue for sometime and experimenting. I think I may have found the solution. The issue is/are the centric rings.

I swapped the rings for the left and right front and I do not have the vibration going from 55-65 anymore. The ride is rock solid...no shimmy..nothing..ziltch..nada.

I have ordered aluminum/metal rings and the plastic ones that I took off do look to be in bad shape before swapping them. I think with the weight of the tires and the rings being being plastic, overtime got deformed. I am 99% sure this is what it was. This also explains why initially there was no vibration.

Will update once I get new rings. I am also going to test at higher speeds (70+)

Thanks for everyone for their help.

Wierd rings!They should all be the same!Do try and call AFS and ask them why their wheels are not direct fitment for BMW !Very unusal?


Anyway hope you get it sorted.Good luck.

[Scottie]

Originally Posted by MiCkEy

Ok so I have been thinking about the issue for sometime and experimenting. I think I may have found the solution. The issue is/are the centric rings.

I swapped the rings for the left and right front and I do not have the vibration going from 55-65 anymore. The ride is rock solid...no shimmy..nothing..ziltch..nada.

I have ordered aluminum/metal rings and the plastic ones that I took off do look to be in bad shape before swapping them. I think with the weight of the tires and the rings being being plastic, overtime got deformed. I am 99% sure this is what it was. This also explains why initially there was no vibration.

Will update once I get new rings. I am also going to test at higher speeds (70+)

Thanks for everyone for their help.

you know when you think about it logically (like us women do).

The centre ring is for your offset right

no matter how bad shape the ring is in I would say that it did not factor in your shimmy because when you torgue up those wheels nuts the ring shouldn't really make I difference. That wheel should be solid up against your hubs.

I suggest to you that your wheel nuts were not tight enough or rather torgued to the correct setting and by taking your wheels off and putting them back on and by tighting the nuts up yourself has resolved the problem. Do you follow me.

See just ask me

[Driver8]

Mickey - Glad to hear that you've had some success. Please keep us posted. I've had issues with centering rings before and they can be very frustrating!

Mike

[Driver8]

Scottie - Centering rings are used to center a wheel with a larger center bore (female end) on a hub with a centering nub (male end) whose diameter is less than that of the center bore of the wheel. (Pardon my use of the word "nub," but I can't think of a more technical term at the moment.) The centering ring fills the area between the hub and the wheel bore and provides a tightly centered fit.

A tight fit is essential to maintaining the wheel and tire's centering on the hub. If it's not centered, you will have vibration caused by runout (vertical up and down motion). The torque required on a set of lugbolts to hold a wheel in place that has a couple millimeter's play is much great than the standard 80-90 lb-ft we use to attach a wheel to a hub. This is why centering rings are so important.

A centering ring, in its most common definition, does not affect offset of the wheel. It only centers the wheel on the hub. You may be thinking of spacers, which typically bolt onto a hub to extend the mounting point (usually 10, 20 or 30mm) of the wheel. Hope this is of some value. If I've missed anything, please add or fill in the blanks where appropriate.

Mike