Vibration & Road Condition

nis350 · 11-15-2014, 03:35 PM

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.

1st · 11-15-2014, 03:45 PM

Is the vibration during braking? Do you have spacers?

nis350 · 11-15-2014, 03:49 PM

Quote:

Originally Posted by 1st

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.

1st · 11-15-2014, 03:52 PM

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

Read T · 11-15-2014, 04:06 PM

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

Rusty · 11-15-2014, 08:55 PM

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.

HATE rough concrete.

nis350 · 11-15-2014, 11:14 PM

Quote:

Originally Posted by Rusty

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.

HATE rough concrete.

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?

Rusty · 11-16-2014, 04:41 AM

Quote:

Originally Posted by nis350

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.

nis350 · 11-16-2014, 10:12 AM

Quote:

Originally Posted by Rusty

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?

Element600ee · 11-16-2014, 11:49 AM

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 .

nis350 · 11-17-2014, 05:51 PM

Thanks all for the responses.

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

11-15-2014, 03:35 PM	#1 (permalink)
nis350 A True Z Fanatic Join Date: Oct 2014 Location: socal Posts: 1,105 Drives: 370z Rep Power: 13435	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.

11-15-2014, 04:06 PM	#5 (permalink)
Read T A True Z Fanatic Join Date: May 2012 Location: Raleigh, NC Posts: 1,046 Drives: 11 Nissan 370z BC 6M Rep Power: 18	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 SouthArk370Z likes this. __________________ 2011 Nissan 370z Black Cherry Sport Pkg - Daily Driver, , 1960 Morgan +4 fun car, 1986 BMW 325ES, 1998 M3 and 1996 Spec Miata - Race Cars SUPPORT TEAM WINSOME RACING - WRL, CHUMP, LEMONS

11-15-2014, 08:55 PM	#6 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,180 Drives: 2011 Nismo GM 6M Rep Power: 2684437	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. HATE rough concrete. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

11-17-2014, 05:51 PM	#11 (permalink)
nis350 A True Z Fanatic Join Date: Oct 2014 Location: socal Posts: 1,105 Drives: 370z Rep Power: 13435	Thanks all for the responses. will take it back and have them check the balance of the tires. 1st likes this.

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11-15-2014, 03:45 PM	#2 (permalink)
1st A True Z Fanatic Join Date: Jul 2012 Location: I 80 Biz U.S. 50 Posts: 1,708 Drives: Platinum Z Rep Power: 1616	Is the vibration during braking? Do you have spacers?

11-15-2014, 03:52 PM	#4 (permalink)
1st A True Z Fanatic Join Date: Jul 2012 Location: I 80 Biz U.S. 50 Posts: 1,708 Drives: Platinum Z Rep Power: 1616	I know you stated balanced recently. But by who? Big wheels have a specific formula to use when balancing then smaller diameter wheels.

11-16-2014, 11:49 AM	#10 (permalink)
Element600ee Base Member Join Date: Sep 2014 Location: Abingdon md Posts: 86 Drives: 10 370z Monterey Rep Power: 11	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 .