Vibration & Road Condition
 

I am running after market wheels with 9.5 front and 11 on the back. I noticed that sometimes I get a slight vibration on the steering and sometimes don't at around 70 - 80 mph. The only variable seems to be the fwy road condition. I was wondering whether it is normal? Thanks.

The wheels have been balanced recently and all have hub rings. Tires are all in good shape with even wear pattern. I just got the car so I don't have any baseline experience.

Is the vibration during braking? Do you have spacers?

No vibration during braking, only while i was cruising on the fwy. No spacers and have hub rings for the wheels. These are the Work wheels. So they are pretty decent wheels.

I know you stated balanced recently. But by who? Big wheels have a specific formula to use when balancing then smaller diameter wheels.

I'm sure you know this ,but having your alignment checked wouldn't hurt. Also check for worn suspension parts or leaking struts.

If you still have the OEM wheels/tires I would throw those on and see if it fixes the problem. Then you know it is a wheel/tire problem and not suspension/alignment

The type of pavement you're on has a lot to do with it. Smooth blacktop, rough blacktop, concrete etc. My Z reacts differently to each type. And the tire noise is different too. Love smooth blacktop. :driving: HATE rough concrete. :shakes head:

I was thinking about the same as the vibration comes and goes depend on the fwy. I think these wide summer tires are also more sensitive to road surface condition as well.

Do you also get slight vibration on certain road surface?

Yea, though the whole car.

I can imagine that the whole car could get some vibration if the pavement is rough, but what about vibration/shake on the steering wheel while on different fwy surface?

a lot of the summer tires are actually soft enough that over night they can actually develop a flat spot when its colder out and they cool off in that position over night . my car will actually vibrate for about the first 10 to 15 mins driving when its cold outside until the tires warm up a little and they are just dunlop sport tires . the vibration is not bad at all but its enough you can feel it in the wheel . its usually right between 65 and 70 that its the most noticeable . once they warm up it goes right away . btw the softer the compound of the tire the worse this affect can be . pay attention to when it does it . it may be just that simple .

Thanks all for the responses.

will take it back and have them check the balance of the tires.