I've been trying to figure out where the vibration in my steering wheel is coming from. It is happening around 125-135+ km/h and it comes and goes, which has me concerned as I want to get to the track soon.
I've gone through the vibration FAQ: http://www.m3post.com/forums/showthread.php?t=695222
So far I have:
1. Removed spacers.
2. Got an alignment (which lead to replacing the tie rods because of corrosion).
3. Control arm bushing I'm told were good when the tie rods were installed.
4. Had the tires balanced (one had some road force and will eventually have to be replaced).
5. Tried another set of tires (from my friends 335i, vibration persisted)
6. Bled brakes, serviced brakes.
After bleeding the brakes all the vibrations were gone, had the car aligned again, still no vibrations, was very happy. A mechanic said that could make sense if there was an issue with one of the pistons putting unusual pressure on the pad while not braking causing the rotor to heat and cool unevenly while driving.
I wanted to put spacers back on the fronts so I bought 15mm Macht Schnell competition spacers and after a few days with them on the car the vibration has come back, but not as severe as when this all began (Used to make my hand numb on long drives). So I removed the spacers and without them it's still vibrating, again less than before but still there.
What else can I try? I'm going to check the rotors (which are OEM) to see if they are warped, but I doubt it because there is no braking vibration. I know one tire has more road force on it than it should, however I'm not sure if that's the cause since I did manage to get no vibrations for a few weeks, as well when I ran my tires on my friends 335 at highway speeds there were no vibrations, and with his tires on my M3 there was still vibration.
I've gone through the vibration FAQ: http://www.m3post.com/forums/showthread.php?t=695222
So far I have:
1. Removed spacers.
2. Got an alignment (which lead to replacing the tie rods because of corrosion).
3. Control arm bushing I'm told were good when the tie rods were installed.
4. Had the tires balanced (one had some road force and will eventually have to be replaced).
5. Tried another set of tires (from my friends 335i, vibration persisted)
6. Bled brakes, serviced brakes.
After bleeding the brakes all the vibrations were gone, had the car aligned again, still no vibrations, was very happy. A mechanic said that could make sense if there was an issue with one of the pistons putting unusual pressure on the pad while not braking causing the rotor to heat and cool unevenly while driving.
I wanted to put spacers back on the fronts so I bought 15mm Macht Schnell competition spacers and after a few days with them on the car the vibration has come back, but not as severe as when this all began (Used to make my hand numb on long drives). So I removed the spacers and without them it's still vibrating, again less than before but still there.
What else can I try? I'm going to check the rotors (which are OEM) to see if they are warped, but I doubt it because there is no braking vibration. I know one tire has more road force on it than it should, however I'm not sure if that's the cause since I did manage to get no vibrations for a few weeks, as well when I ran my tires on my friends 335 at highway speeds there were no vibrations, and with his tires on my M3 there was still vibration.
