so i don't really know what to make of this. if i should be concerned or not even worry about it. i use my manual 06 oz as my daily driving car. sometimes when i accelerate fast(anywhere between 5000 and 6000 rpms) i notice that my car shakes/vibrates. not a tremendous amount but enough to put me in question. last week when i sped on this one occasion it shook a lot when i was in 2nd gear. from my experience with this issue i don't think it could be an unbalanced tire because it doesn't happen consistently. i also don't think it has to do with any certain gear i'm in because every now and then the car with shake a bit while i'm in say 4th or 5th just coasting at low rpms. my one guess is it's due to the fact that i don't shift perfectly smooth every time, but the vibration continues for longer than i feel it should. so....

 

What is the speed? Around 55-60MPH? I had this same problem after I had a flat. I thought it was a balance issue, but found that the wheel wasn't seated properly when it was put back on.

However do not rule out a balance issue. I took mine to wally world, and they checked it for cheap.

 

the speed is irrelevant. it has happened at various speeds. plus there was only one time that it was real bad, the other times it's close to unnoticeable, but i do notice it. and someone else in my car noticed it too. if it actually was a balance issue, wouldn't the problem be consistent and not periodic?

 

Check your tire pressure first.

 

good idea, you don't think it would have to do with engine mounts at all do you?

 

Check your CV boots for rips...

 

ok, i checked the pressure in my tires and the rear right tire was only at about 12 psi while all the others were at 26/27 psi. so i filled them all to about 32 psi. i havent gotten a chance to check the cv boots, but until then i'll be waiting to see if it still vibrates.

 

bearings?