Help! My car is still riding terrible!

gavoci92 · 11-04-2015, 07:01 AM

Hey guys I'm sorry I'm back again haha but I'm still having issues and it's killing me...
Main issues:
- Car pulls both directions whenever the road is barely uneven. This causes me to have to hold the wheel hard during turns because if it hits a bump, the car feels like it shifts off the ground and the direction has a mind of its own.
- Car's ride is rough, feel EVERY bump.
- Car vibrates at high speeds, >60 and gradually gets worse.
- When going over potholes or drain covers in the road, there is a metal knock sound that comes and it sounds as if your cars upper shock mount is hitting the metal.....

Things I have done to attempt to fix the issue: (fixed it all myself)
- New TRW M3 front upper and lower control arms
- New BMW tie rods
- New BMW upper shock mounts
- New BIlstein B4 front struts
- New Enkei wheels and Sumotomo tires
- Alignment done at both BMW and Firestone in a span of 3 months.

What could it be? I read that it may be the wheel bearings or the driveshaft is out of balance or out of phase? I need some serious suggestions. I am a college student and I can't keep wasting money. I Love this car and I just want to have a normal soft ride.

pomerlo · 11-04-2015, 10:26 PM

It all started when you changed your tires and wheels ?

You seem to describe what tramlining is !

http://www.tirerack.com/tires/tirete....jsp?techid=47

The most common cause is tires... If your Sumotomo are stiff sidewall sports low profile tires then it could be the cause.

Can you put back the original set for a test ?

Good luck

NW 335i · 11-05-2015, 12:43 AM

x2

Tires

My junk runflats up front had gotten horrible. The car was trying to kill me on the highway. Swapped the fronts and its like I have a completely different car.

gavoci92 · 11-05-2015, 07:55 AM

No it started before I changed anything! I needed new tires anyways and so when I bought the car the rims were a little banged up so I thought my vibration and unevenness was from a bent rim so thats why I changed the rims and tires at the same time. I was having the same issues before I put on the sumotomo tires!

Dark_Knight_335 · 11-05-2015, 09:44 AM

Sumitomos? Never heard of them.

Why not try tires like Michelins or Continentals like everyone else?

There is a reason BMW uses them on their cars.

pomerlo · 11-05-2015, 05:22 PM

What sizes are your new Sumitomos?

Next step would be to perform this easy test (start to watch at 0:15) :

[u2b]https://www.youtube.com/watch?v=HKk33w86OSI[/u2b]

Of course it is a Ford pick-up in there but the same applies to your 335.
Make sure you can't feel any looseness at 9 & 3 O'clock AND 12 & 6 O'clock.

In addition, what I like to do is lifting the wheel about 6 inches off the ground and pry it up and down with a 5-6 foot long 2X4 underneath and listen carefully for any noise.

11-04-2015, 07:01 AM	#1
gavoci92 New Member 2 Rep 22 Posts Drives: 2007 BMW 335i Join Date: Nov 2014 Location: Memphis, TN iTrader: (0) Garage List 2007 BMW 335i sedan [0.00]	Help! My car is still riding terrible! Hey guys I'm sorry I'm back again haha but I'm still having issues and it's killing me... Main issues: - Car pulls both directions whenever the road is barely uneven. This causes me to have to hold the wheel hard during turns because if it hits a bump, the car feels like it shifts off the ground and the direction has a mind of its own. - Car's ride is rough, feel EVERY bump. - Car vibrates at high speeds, >60 and gradually gets worse. - When going over potholes or drain covers in the road, there is a metal knock sound that comes and it sounds as if your cars upper shock mount is hitting the metal..... Things I have done to attempt to fix the issue: (fixed it all myself) - New TRW M3 front upper and lower control arms - New BMW tie rods - New BMW upper shock mounts - New BIlstein B4 front struts - New Enkei wheels and Sumotomo tires - Alignment done at both BMW and Firestone in a span of 3 months. What could it be? I read that it may be the wheel bearings or the driveshaft is out of balance or out of phase? I need some serious suggestions. I am a college student and I can't keep wasting money. I Love this car and I just want to have a normal soft ride.
	Appreciate 0 Tweet Quote

11-04-2015, 10:26 PM	#2
pomerlo New Member 3 Rep 18 Posts Drives: 2003 BMW Z4 3.0 M54 Join Date: Aug 2013 Location: Quebec, Qc iTrader: (0)	It all started when you changed your tires and wheels ? You seem to describe what tramlining is ! http://www.tirerack.com/tires/tirete....jsp?techid=47 The most common cause is tires... If your Sumotomo are stiff sidewall sports low profile tires then it could be the cause. Can you put back the original set for a test ? Good luck
	Appreciate 1 Quote

11-05-2015, 12:43 AM	#3
NW 335i Private First Class 54 Rep 185 Posts Drives: 335i 6MT Join Date: Mar 2014 Location: Pac NW iTrader: (2)	x2 Tires My junk runflats up front had gotten horrible. The car was trying to kill me on the highway. Swapped the fronts and its like I have a completely different car.
	Appreciate 0 Quote

11-05-2015, 07:55 AM	#4
gavoci92 New Member 2 Rep 22 Posts Drives: 2007 BMW 335i Join Date: Nov 2014 Location: Memphis, TN iTrader: (0) Garage List 2007 BMW 335i sedan [0.00]	No it started before I changed anything! I needed new tires anyways and so when I bought the car the rims were a little banged up so I thought my vibration and unevenness was from a bent rim so thats why I changed the rims and tires at the same time. I was having the same issues before I put on the sumotomo tires!
	Appreciate 0 Quote

11-05-2015, 09:44 AM	#5
Dark_Knight_335 Came to the N55 Darkside 1115 Rep 12,740 Posts Drives: 2011 335 E93 M-Sport Join Date: May 2010 Location: NY/NJ iTrader: (28)	Sumitomos? Never heard of them. Why not try tires like Michelins or Continentals like everyone else? There is a reason BMW uses them on their cars.
	Appreciate 0 Quote

11-05-2015, 05:22 PM	#6
pomerlo New Member 3 Rep 18 Posts Drives: 2003 BMW Z4 3.0 M54 Join Date: Aug 2013 Location: Quebec, Qc iTrader: (0)	What sizes are your new Sumitomos? Next step would be to perform this easy test (start to watch at 0:15) : [u2b]https://www.youtube.com/watch?v=HKk33w86OSI[/u2b] Of course it is a Ford pick-up in there but the same applies to your 335. Make sure you can't feel any looseness at 9 & 3 O'clock AND 12 & 6 O'clock. In addition, what I like to do is lifting the wheel about 6 inches off the ground and pry it up and down with a 5-6 foot long 2X4 underneath and listen carefully for any noise.
	Appreciate 0 Quote