Whole car vibrates

[Jad1010]

For the past few months I’ve notice that my bmw 325i 2005 is vibrating, it’s the whole car. Some days there the vibration is really really bad and other days the car is as smooth as a rolls Royce. But more after than not it’s vibrating. I don’t know the cause of this and it’s been really annoying me. The cars engine sounds completely fine and you can feel this in the steering wheel and the brake peddle a lot but the seats not so much, but it’s still prevalent. What might be the cause of this issue, vacuum line? Motor mounts? Also I should mention that the car runs a little bit better when the a/c is on and the car turns on faster. And when the car is cold it has a harder time cranking over and turning on.

[bluptgm3]

Did you bend a rim?
Did you throw a wheel balance weight?
Did you hit a pothole and break a tire casing?
Have you inspected the Giubo?
Have you inspected the center bearing on the drive shaft?

Do you have lights illuminated in the dash? CE light?


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[jclausen]

If it’s an ix tires that don’t have similar tread depth

[bluptgm3]

If it’s an ix tires that don’t have similar tread depth

Are tire sizes the same and with equivalent inflation?


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[jclausen]

The only reason I aski if it’s an ix is because we had a customer with one replaced only two tires and on the freeway it drove really weird, we thought the other tires were ok, but they weren’t installed the other two new tires drove fine

[Jad1010]

The vibration is only when the car is at a stop sign or in park so basically just idling

[bluptgm3]

How many miles and do you have any unusual lights on in the dash?


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[Jad1010]

The car just hit 140 K miles and no there are no lights on the dash

[harrier]

What is the idle rpm?

[Jad1010]

In drive at a stop sign the idle rpm is about 500-550 and when the car is in park about 700-800

[harrier]

In drive at a stop sign the idle rpm is about 500-550 and when the car is in park about 700-800

Your idle is quite low. If you haven’t already I would clean the idle control valve. And I would check your fuel trims, you likely have one or more vacuum leaks.

However the solution to the vibration is new motor and transmission mounts. Even if they are not leaking the engine mounts are compressed and rigid. Just replace them.

[Jad1010]

Oh ok thank you sm for the info, the low idle couldn’t be from the k&n high flow pop air filter could it?

[harrier]

No. You most likely have a vacuum leak. Read this (long, but stuff you should know.
https://www.e46fanatics.com/threads/...trims.1284608/