Went to 20s and need help

[Scottie]

Originally Posted by 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

yeh I know bad explanation what we are talking about hear is the Center bore. size of the hole at the back of the wheel which the hub fits into. Actually as I understand it is a load bearing part but from memory ion the X'er it's not a huge lug so I reckon the bolts/studs come more in to play.

[MiCkEy]

I had mounted and unmounted the front two wheels so many times that I have lost count. This is the only instance that the vibration/shimmy is gone. The lugs had been tight and secure in all those instances.

PS: If we men could think like women, all you women would not have a place on this earth. Behind every successful man would be..ahem..another man.

Originally Posted by Scottie

yeh I know bad explanation what we are talking about hear is the Center bore. size of the hole at the back of the wheel which the hub fits into. Actually as I understand it is a load bearing part but from memory ion the X'er it's not a huge lug so I reckon the bolts/studs come more in to play.

[X5Andrew]

Originally Posted by MiCkEy

PS: If we men could think like women, all you women would not have a place on this earth. Behind every successful man would be..ahem..another man.

I take it you are single MiCkEy? Or married for a real long time

LMAO

[94502]

any updates????

[mrcohlmia]

I don't know if anyone will look at this thread again, but I am having serious vibration issues. I have had my replica 20's with michelin diamaris tires for about a year now. When I first got them I did not notice any vibration, but my problems as of late have been many. At 55 mph the steering wheel shakes visibly, like the front wheels are moving from side to side or something. Outside of that speed that does not occur. When I brake the stearing wheel shudders similarly but for only a second, like a disc is warped or something. My main issue is this. Because I travel long distance a lot I notice this. From 70 mph to 90 mph the car vibrates constantly and passengers notice it, and more importanly it drives me CRAZY!! I have had the wheels balanced many times at different places and I have the same problems. Alignment is not the issue either. BMW says my control arm bushings are worn down or something, but they also tell me this would not fix any of my problems except the shuddering of the steering wheel when on the brakes. I don't know what to do now. Do you think inflation over 32psi would cause vibration at highway speeds?