E-Class (W124) 1984-1995: E 260, E 300, E 320, E 420, E 500 (Includes CE, T, TD models)

Suspension/tires causing tracking issues

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Old Jan 5, 2007 | 11:12 AM
  #1  
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1990 300ce
Suspension/tires causing tracking issues

Hey guys.

This has been going on with my car for a long time. Ever since I upgraded to 18x8 rims with 225/40/r18's and lowered it on H&R springs, the car wanders all over the place. It's super annoying.

It's especially bad on the freeway and where ever there are ruts in the road. I used to drive a Jeep Wrangler that was lifted with big tires (ha ha, its funny to go from a red-neck car to a mercedes), so I was very used to this.

I have always assumed that it's just a drawback of going with wider rims. My thought has always been that it's a leverage issue- the wheels/tires are wider, which causes leverage against the steering components when I go over ruts. That the wider wheels make the car easier to be steered all over the place (is steered a word?).

For those of you who have wider wheels installed on your cars, is this an issue for you? My car certainly did not do this when it was riding on the stock wheels/tires.

One more bit of info, I had a full alignment done by the shop that lowered my car. However, my tires are wearing prematurely in both the front and the rear. I know that I need to get a camber kit for the rear eventually, but my understanding is that the front is adjustable enough that you can get it back to within spec without modification. However, the fronts are still wearing on the inside edges more than the outer edges. So maybe that's a clue.

But what I really want to know is if you other guys with wider tires have noticed this same thing, or if something's wrong with my car. Thanks doods.
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Old Jan 5, 2007 | 11:21 AM
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as soon as the camber changes, some alignment issues that may be "in spec" can be geometrically increased. You need to measure (or have a shop measure) the chassis and the suspension to make sure everything is straight. My car drives straight, doesn't pull, and seems "in spec" when it comes to alignment, but I noticed the right front wheel was way towards the rear of the wheel well. The shop measured the chassis, everything was good. They measured the suspension and boom - she had a bent a-arm and bent spindle. If she was lowered, the track probably would have been all over the place.

And BTW, steered is a word; doods isn't.
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Old Jan 5, 2007 | 11:41 AM
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is a German Tank
Originally Posted by Bigpete123
Hey guys.

This has been going on with my car for a long time. Ever since I upgraded to 18x8 rims with 225/40/r18's and lowered it on H&R springs, the car wanders all over the place. It's super annoying.

It's especially bad on the freeway and where ever there are ruts in the road. I used to drive a Jeep Wrangler that was lifted with big tires (ha ha, its funny to go from a red-neck car to a mercedes), so I was very used to this.

I have always assumed that it's just a drawback of going with wider rims. My thought has always been that it's a leverage issue- the wheels/tires are wider, which causes leverage against the steering components when I go over ruts. That the wider wheels make the car easier to be steered all over the place (is steered a word?).

For those of you who have wider wheels installed on your cars, is this an issue for you? My car certainly did not do this when it was riding on the stock wheels/tires.

One more bit of info, I had a full alignment done by the shop that lowered my car. However, my tires are wearing prematurely in both the front and the rear. I know that I need to get a camber kit for the rear eventually, but my understanding is that the front is adjustable enough that you can get it back to within spec without modification. However, the fronts are still wearing on the inside edges more than the outer edges. So maybe that's a clue.

But what I really want to know is if you other guys with wider tires have noticed this same thing, or if something's wrong with my car. Thanks doods.
Pete I have 16x8's and although pretty steady, my car tends to wonder on its own as well. And it sure as hell is annoying.

I have M pilots and they have been balanced.
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Old Jan 5, 2007 | 11:57 AM
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another thing I just thought of - worn suspension bushings. It could also be worn steering rack, but I don't know too much about the signs/symptoms of worn out power steering.
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Old Jan 5, 2007 | 08:58 PM
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nice, thanks guys. I will need to do a 3-way alignment soon. I had my mechanic inspect all of my bushings a while back and he said they looked good. I don't have anything in my service records that indicate that they were replaced, so who knows.
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Old Jan 5, 2007 | 10:33 PM
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Ive got tracking issues with my 18's, I think I need to get the tie rod ends etc replaced. If the road is rutted my car likes to go where it likes, I hate it. But I got the ol winter rubber on right now so it's not too bad. Do you have rubbing issues on the CE? My bro has had some rubs on his and I don't think there is much you can do about the rear camber w/out adjusting the fenders some
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Old Jan 6, 2007 | 12:20 AM
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Originally Posted by myfirstbenz
Ive got tracking issues with my 18's, I think I need to get the tie rod ends etc replaced. If the road is rutted my car likes to go where it likes, I hate it. But I got the ol winter rubber on right now so it's not too bad. Do you have rubbing issues on the CE? My bro has had some rubs on his and I don't think there is much you can do about the rear camber w/out adjusting the fenders some
Dude, your new sig pic kicks @ss!
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Old Jan 6, 2007 | 12:28 AM
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My car rides perfectly fine. Perhaps switched to different tires.
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Old Jan 6, 2007 | 02:03 AM
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Originally Posted by mgw_300e
Dude, your new sig pic kicks @ss!
Thanks mayn! I took that before thanks giving last year during one of the first snows about 14 miles north of my apartment. It's all snowmobile country until spring

Chris, You have a newer ride too, I bet your front end is a bit tighter than our early gen w124's. I am afraid I am going to have to spend some serious time and a few bux rebuilding mine, just to have it new and right. count your blessings one less thing to do.
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Old Jan 6, 2007 | 05:35 AM
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W124's
thanks buddy. To be honest - I still love the look on the older W124s. I still miss my old one a lot especially since I see Omar's white 300E 2.8 all the time it always reminds me. All the money and effort is way worth it! Don't worry - you're TE is gonna look dope when finish and I'm looking foward to it.

btw - Love the new sig as well.
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Old Jan 6, 2007 | 01:47 PM
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1990 300ce
alright, so you guys are saying that there IS in fact something wrong with my car, whether it's bushings, alignment, or something else. In other words, the wider tires have nothing to do with it?

I'm sure there's plenty of truth to what you guys are saying. But isn't it weird that I didn't have these problems until I lowered my car and put wider tires on it? I guess that could indicate that it's simply an alignment issue. But on a smooth road, i can let go of the steering wheel and the car will go perfectly straight. I don't have problems unless I'm on a road with ruts.

Oh, and myfirstbenz. regarding rubbing issues and rear camber. My car has some very slight rubbing in the front when I turn the wheel close to all the way. I rarely need to do that, so it's not an issue. There are no rubbing issues in the rear. But that leads me to the rear camber- I have a fair amount of room left between the fender lip and my tire. And I know my camber is bad. So I was thinking about getting one of those camber kits. I think I have plenty of room to fix my camber problems. There are three brands that I've heard about:

1. K-mac bushing kit (is this kit adjustable? or is it simply bushings?)

2. Speedybenz adjustable camber kit (a guy who frequents club202.com and is an engineer who makes these- apparently he's extremely difficult to get ahold of, but the quality is fantastic)

3. Benzboy adjustable camber kit (same idea as speedybenz, although I've heard of some people having problems keeping these things put- apparently they can have a mind of their own).

Anybody have other sources? I will probably get this done when I get new tires sometime in the near future, along with a full alignment.
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Old Jan 6, 2007 | 01:53 PM
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btw, nobody has commented on how much cooler my sig makes my car look than it actually does!
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Old Jan 6, 2007 | 02:16 PM
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Originally Posted by Bigpete123
btw, nobody has commented on how much cooler my sig makes my car look than it actually does!
No, I think your sig is cool, but your car is sick as is, hard to improve it's looks with a filter, not to say the sig isn't cool.
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Old Jan 6, 2007 | 02:24 PM
  #14  
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89 300TE, and 68 280sel
Originally Posted by Bigpete123
alright, so you guys are saying that there IS in fact something wrong with my car, whether it's bushings, alignment, or something else. In other words, the wider tires have nothing to do with it?

I'm sure there's plenty of truth to what you guys are saying. But isn't it weird that I didn't have these problems until I lowered my car and put wider tires on it? I guess that could indicate that it's simply an alignment issue. But on a smooth road, i can let go of the steering wheel and the car will go perfectly straight. I don't have problems unless I'm on a road with ruts.

Oh, and myfirstbenz. regarding rubbing issues and rear camber. My car has some very slight rubbing in the front when I turn the wheel close to all the way. I rarely need to do that, so it's not an issue. There are no rubbing issues in the rear. But that leads me to the rear camber- I have a fair amount of room left between the fender lip and my tire. And I know my camber is bad. So I was thinking about getting one of those camber kits. I think I have plenty of room to fix my camber problems. There are three brands that I've heard about:

1. K-mac bushing kit (is this kit adjustable? or is it simply bushings?)

2. Speedybenz adjustable camber kit (a guy who frequents club202.com and is an engineer who makes these- apparently he's extremely difficult to get ahold of, but the quality is fantastic)

3. Benzboy adjustable camber kit (same idea as speedybenz, although I've heard of some people having problems keeping these things put- apparently they can have a mind of their own).

Anybody have other sources? I will probably get this done when I get new tires sometime in the near future, along with a full alignment.
Well, I would suspect that you do have problems due to the springs and wheels, this has added all kinds of new stresses to the suspension and the suspension comonents/rubber/bushings that they havnen't had to deal with intheir 17 years on the road. This was the tipping point, same with my car.
I have heard of k-kmac and speedybenz, and I would give them a try. I just think that it wouldn't hurt, when you have some money freed-up to address these issues, I will on my car because I hate to wear out tires rather than fix the problem at hand. Have you taken it to an alignment shop or just a regular general shop. I hate to say it, but even a place like les schwab (I am not a fan) has a good alignment shop and they can tell you(like they did for my brother for free) with a computer print out what condition your suspension is in and what parts need to be replaced. Their prices were very very fair. For my brother(Benzbro) he got a quote for under 300 for all new tierods and a full allignment. I priced it out and even with my wholesale price connection, it is almost not worth it for the hassle for me to do the work and then drive over to have them do the final allingment.
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