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Issues with H&R springs on 2015 507 coupe

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Old 09-15-2015, 10:56 AM
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2012 C63 AMG Coupe
Issues with H&R springs on 2015 507 coupe

I just had H&R springs installed on my 2015 507 coupe, no other suspension parts other than the springs. My local MB dealership installed the springs and is saying the car pulls to the right on the highway. They are claiming that the car needs adjustable lower control arms because they cannot dial in the car enough to correct it to drive straight. Is this bs from the dealership? Has anyone else ever had this issue with H&R springs?


Any help is greatly appreciated.
Old 09-15-2015, 10:58 AM
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Ive read that this is common with the H&R springs only setups
Old 09-15-2015, 02:31 PM
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Same issue here, '12 coupe pulls to the right after H&R springs install. I've had an alignment performed already, taking it in to another dealership today to get OEM camber bolts installed and re-aligned to see if it will help. I'll keep you posted.
Old 09-15-2015, 08:31 PM
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Wow...I just bought H&R springs and still in box new. Maybe I won't install them after all and just go coilovers.
Old 09-15-2015, 11:36 PM
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Mine pulls to the right a lot too. Just installed them about two months ago and had two alignments done and still pulls a lot to the right. If anyone finds a solution please let us know
Old 09-15-2015, 11:42 PM
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Originally Posted by deanmc
Same issue here, '12 coupe pulls to the right after H&R springs install. I've had an alignment performed already, taking it in to another dealership today to get OEM camber bolts installed and re-aligned to see if it will help. I'll keep you posted.
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Old 09-16-2015, 08:28 AM
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For what it is worth, I have HR springs on my 2014 C63 507 for 15 months now and never had any pulling to the right or other alignment issues. I very much doubt such an issue would be caused by springs. If a slight change in height makes the car pull into a different direction in away that cannot be fixed with an alignment, then something else is wrong or bent.
Said differently - you just learned about an issue you have and now at least you know and can address it, for example with camber bushings as mentioned by K-Mac.


Blaming springs for causing a misalignment is really just shooting the messenger, I think. The lowering may expose a pre-existing condition.


Anybody have additional insights on this?
Old 09-16-2015, 03:06 PM
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I didn't think springs could cause this, but SO many people on here report the same issue. I just did springs a couple weeks ago and sure enough, it pulls to the right now. It must be something with the geometry, I doubt all these people with different model years, miles, locations, etc all have the same type of damage to their suspension.
Old 09-16-2015, 09:38 PM
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Could the springs caused corner balance to be off from original specs?
Old 09-17-2015, 10:50 AM
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Originally Posted by oggie
Could the springs caused corner balance to be off from original specs?
Ding Ding Ding we have a winner folks.
I almost guarantee that the corner balance is off due to a geometry issue or inconsistent spring rate issue. One big problem is that our cars are not the same. There are very significant differences in build from what I see in person and on these forums.
I have H&R coil overs. When initially installed my car pulled a bit. I went to a buddies house and we put the car on scales on a FLAT LEVEL floor and I saw the reason. We evened up the weight distribution which actually did not take a lot of adjustment and like magic the car drives perfectly straight again.
Now my only issue is that I love the look of being lowered. No rub issues. The car also handles great as I do a lot of driving on some of the best sports car roads in the country (north Georgia, North Carolina). The ISSUE is the suspension is so damn stiff at times I wonder if I just welded posts in place of the springs. My pano roof also plays a horrible musical while driving due to the body flex which is magnified by the stiff springs.
I think I will bite the bullet and do the KW setup soon. I have not been able to snag a ride in a KW lowered car but the general info online is they are a lot better riding.

As for the springs ... Maybe the rates on the springs are not consistent? I will confirm adjusting the corner balance made a very noticeable difference in my case.










Tail of the Dragon US129

Last edited by Eric ATP; 09-17-2015 at 11:06 AM.
Old 09-24-2015, 12:40 PM
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Originally Posted by Eric ATP
Ding Ding Ding we have a winner folks.
I almost guarantee that the corner balance is off due to a geometry issue or inconsistent spring rate issue. One big problem is that our cars are not the same. There are very significant differences in build from what I see in person and on these forums.
I have H&R coil overs. When initially installed my car pulled a bit. I went to a buddies house and we put the car on scales on a FLAT LEVEL floor and I saw the reason. We evened up the weight distribution which actually did not take a lot of adjustment and like magic the car drives perfectly straight again.
Now my only issue is that I love the look of being lowered. No rub issues. The car also handles great as I do a lot of driving on some of the best sports car roads in the country (north Georgia, North Carolina). The ISSUE is the suspension is so damn stiff at times I wonder if I just welded posts in place of the springs. My pano roof also plays a horrible musical while driving due to the body flex which is magnified by the stiff springs.
I think I will bite the bullet and do the KW setup soon.
Man, none of that sound good at all. To each his own, but I can't imagine spending money to make a great car horribly worse in every way, all to get rid of a half inch of fender gap.
Old 09-24-2015, 11:31 PM
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Originally Posted by Hans Grenade
Man, none of that sound good at all. To each his own, but I can't imagine spending money to make a great car horribly worse in every way, all to get rid of a half inch of fender gap.
Not that simple. Stock the car looks a bit like a monster truck especially in the front end. It also had a bit of body roll and wheel hop when accelerating. A benifit of the coil overs is the lower CG, min body roll, and I am not getting wheel hope any more with traction control off. My pano roof made tons of noise before and is probably one of the biggest complaints about the C63. On nice driving roads and out on track days the coil overs and updated suspension really are a nice improvement over the stock ride height. Now around town with the city traffic and all the ballless mini van drivers it is a bit on the stiff side.

Stock is fine but not a lot of people on this forum are hear because they want to drive a stock car. In addition if you have ever driven a Black Series they are VERY stiff to say the least. I don't think they ruined that car.
Old 09-25-2015, 12:18 AM
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That's quite an analogy, the car looks like a monster truck LOL but no matter what it looks like I will not sacrifice ride quality for looks.
I would have bought slammed Honda if ride quality did not matter.

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