Hi guys, I was at first installed a set of 20" wheels on my G37s, balanced and everything done then got vibrations when on high speed 55mph+. Brought it back to the shop and was told that I need to install the HUB centric size (66.1-73) since the wheels are aftermarket. Got it installed and now the vibrations still exist
What's exactly going on and what should I need to do next? Anyone can help please?

 

Check the wheels to make sure no weights have fallen off?

 

Have them rebalanced, are these wheels new? Which wheels are they? If bought used have them checked for bends

 

I'm having the same issue. Pretty sure they're just out of balance.

 

These are brand new wheel. Incurve Concave wheels and im pretty sure the shop won't put the tires on if the wheels are bent.
No they haven't been rebalanced. Should I need to? It doesn't make sense to rebalance since the hub is detached installed. I might be wrong thou

 

I would defiantly have your tires rebalanced. If that doesn't work, I'd contact the wheel company. It's possible your wheels were re-drilled to 114.3. If so, they could have been re-drilled incorrectly.

 

Will do but is that all? Any other issues may cause this?

 

Not sure. What I do know is, you should start from the basics and go from there. First, get your tires rebalanced. From there, if not fixed, chime back in on this thread. I'm sure others will give you advice.
But if not resolved after the rebalance, I'd check back in with the wheel company because if they're reputable they will work with you. Meaning they will most likely send you the fronts first to see if that fixes the issue.

 

Hopefully it's just a re-balance, if the tires were also new w/ the wheels it could even be a tire issue. If it can be isolated to just one wheel and after balancing it still vibrates, might try switching a tire from a "good " wheel and see if the vibration is still in that "bad" wheel.
It's a pain to go through this and hopefully it's a simple fix.

 

I will run down to the local shop tomorrow for checking both tires and wheels. I hope there's nothing else beside those. Kinda annoying when reaching over 60mph. I will get the update tomorrow.

 

So you put on new 20's?
New tires too?
Installed and had a vibrations?
Then bought hub centric rings for the wheels and still vibration?

It can only be a balance issue.

And PS no one checks a wheel for being bent. No reason to.

 

I had the same problem with a deferent car. When I bought the hub centric rings they where not a tight fit which did not center the wheel
propertly. So I bought some aluminum that had a nice snug fit and that
removed the vibration.
Make sure the hub centric rings fit snug in the rims and in the hub of the car.

 

Most of the time it is one tire causing the problem. Road Force would tell you which one. If you have the stock wheels. Put one stock wheel back on at a time and test drive. If you put say the front driver stock wheel on and the vibration goes away. Then that tire and wheel has an issue.

 

This is the exact issue that i was going to post today.

I had my baby went to discount tire to re-balance and figured out the HUB centric rings are not tight fit in the wheel hub which causing the vibrations no matter how many time you re-balance your wheels.

My wheel is 20" and HUB spring size is 66.1-73. Would you think the aluminum would fit the issue?

 

I think it should as long as they are snug.
One question what brand of tires did you buy?