hi there,
my itr recently had virbation problem on highway, after an wheel alignment it seem alot better. But there is still kinda bumpy/virbate feeling at higher speed (140km), just wondering what are your tire psi for front / rear , for both summer performance tire or those who had winter tire. thx

 

Tire inflation does not impact the bumpiness/vibration you are experiencing. Check to see that your wheels are properly balanced. Perhaps a weight came off the wheel or you have another problem related to an out of balance assembly.

 

35F/33R on the stock sized tires for ITR

 

???? why would you say that...?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TPB &raquo;</TD></TR><TR><TD CLASS="quote">Tire inflation does not impact the bumpiness/vibration you are experiencing. Check to see that your wheels are properly balanced. Perhaps a weight came off the wheel or you have another problem related to an out of balance assembly.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lunarone &raquo;</TD></TR><TR><TD CLASS="quote">???? why would you say that...?</TD></TR></TABLE>

If the car vibrates while you are driving, the common cuase is improperly balanced tires.

 

I, too, use the recommended 35F/33R for both my summer performance tires and my winter tires. I use slightly lower pressures for my R compound track tires for track use.

However, I agree with the others; vibration problems rarely have anything to do with the inflation pressure used, and improper wheel/tire balance is the most common cause.

 

yeah alignment has nothing to do with vibration problems and if the guy who did your alignment knows what he was doing, then he should have checked the air before doing your alignment

 

possibly a shifted belt and or balance problem like everyone else says.

 

your axle could be going...