Bolts, when replacing lower control arms, what's the story ?

Replacing the original LCA's with new, stock. What is this about replacing the bolts on the LCA's ? Seems I am not supposed to use the original bolts, but instead replace them with new camber bolts. Why can't I use the take off bolts on the new LCA ? I don't get it. Can someone clear this up ?

Thanks

There are two control arms bolts that you can get from the dealership that allow you to adjust camber by + or - 3degrees. If you have lowered your car with springs like H&R, Vogtland and Eibach, you may be experiencing inside tire wear due to increased negative camber. If you haven't lowered you car never mind. Go with the stock bolts. That takes care of the front end but the rear need adjustables camber arms which ghostrider of this forum has fabricated and may still have some for sale. There are other other manufacturers, like Kmack to name only one, out there that provide kits to do the same.

That's good info.
No lowering, or any mods.
Replacing stock front lousy failed MB LCA w/ aftermarket,
so will stay w/ same un-cambered bolts.

Just to be clear on rear,
do you need the adjustable camber arms on rear, when just replacing to stock ?

Again, thanks.

You can use eccentric bolts or non-eccentric bolts. Eccentric bolts will allow ~0.5 degrees of fixed adjustment positive or negative. Tech sheet says they allow 30 minutes of max/min adjustment, which is definitely not equal to +/- 3 degrees. Only KMAC kits can achieve this range of adjustment.

No you don't need adjustable rear arms if you're at stock height, as your camber is preset from the factory using the non-adjustable arms supplied. Most people with extreme drops require these to maintain decent tire wear or tweak settings on the track but as I'm guessing neither apply to you, just get the OEM camber struts.

Thanks for the info, but, What do you mean by, "struts" ?

The arm that attaches to the knuckle and keeps the top of the wheel at it's static vertical state, thus not allowing you to adjust camber.

No strut on this one. There are upper and lower control arms that attach to the knuckle. The upper, directly. The lower, via the ball joint.

I have just changed my Lower Control arm bolts to the Mercedes Eccentric bolts and have striaghtened up my negative camber. The movement on these bolts is very sensitive and 1 or 2mm difference can throw out your alignment, as the eccentric only give about a 4mm movement which is enough to change the camber by+ / - 3 degress!
So my advise is get your alignment checked when you fit the new arms.
Good luck

Well, I didn't mean strut as in shock+spring assembly, but more as in something that resists legnthwise compression...which is what the upper and lower arms do.

Damn terminology.

Got it. Thanks

Stock config arms, springs and shocks. No concentric bolts. According to everything I've read on this, no alignment necessary. The MB materials say no alignment needed if changing out stock LCA's

While I usually will realign after touching most anything suspension related, if the LCAs are the same length, the specs shouldn't change and an alignment not completely necessitated.