Evening All,

I've done a bit of reading, and it seems that the favorite springs to lower via are the eibachs. Now, I'm have 2010 6MT G37S sedan, and my car was fortunate enough to come with the factory aero lip. I've seen a few pictures of the eibach springs, and I'm concerned that the front lip will get ripped off after the lowering. Can anyone confirm? Another question: my 2005 TL with the works, was lowered on H&R Street Coilovers, and I ended up replacing both axles at around 100k. It was indeed driven hard, and the suspension DEFINITELY took a beating. Can I expect the same with the G? Whether it be the front axles, I'm assuming the front and rear struts will be in need of replacement later down the road because of the springs, yes? I figure I'll do the eibach springs for now, and pair them with koni's in the future. Thoughts? How long can I expect our sport struts to last with the addition of eibach springs?

Thanks all,
Eric

 

not sure if the front end incredibly different from the 07-09s, but haven't heard of anyone ripping off their front end, but there are cases of the underside hitting a drive way or so. This isn't lip itself but the element that sticks out from under the car. and of course you don't want to be approaching any hill/driveway at full speed cause the big brakes will pull your car lower to the ground.


everything else is going to be as expected. The vehicle is fairly rigid, I would imagine higher than avg stress would be placed on the struts/axles, however, I think it's all fairly irrelevant because the struts usually outlive the bumper to bumper warranty, so It really doesn't matter whether you rode on normal springs or lowering springs

 

youll be fine.

you wont have any axle probs.

 

If it's anything like the 07-08, the lip is no lower than the bottom of the bumper itself. You will more likely scrape the air dam* underneath the bumper.

As for the dampers, there are quite a few people on the 'Driver that has Eibach's on stock dampers with many, many miles. No issues.


*Not sure if that's what it's called, but you'll see it.

 

ah, that's a dang relief...thanks mike, stoof, and mw.
by the way, can one of you geniuses explain spring rate to me? i won't be "bouncy" with the eibach springs, will i? at one point, i saw this RETARDED looking (latest gen) accord sedan on springs - slammed. i kid you not, going over small bumps on the freeway was like watching one end of a seesaw.

thanks again,
e

 

Welcome.

A spring's rate is basically the amount of force (weight) needed to compress it a certain amount. Eibach's generally are sprung 10-20% stiffer than OEM, with a progressive feel. OEM's are usually linear. This is one reason Eibach's can feel comfier or softer than OEM for some people. By stiffer, i mean it takes more weight to get that spring to compress the same distance when compared to the OEM.

Bounce can be caused by a lot of things. Some hack jobs, where the spring is literally hacked to size to achieve a similar lowering effect, changes the dynamics of the spring - which can cause bounce. Chances are these same vehicles are basically riding on their bump stops.

Generally, for untouched aftermarket springs matched to OEM dampers, the bounce is from lack of dampening by the OEM set-up. I haven't read or heard much from the G group about bounce from Eibach's, but i have read from numerous owners who felt their ride turned for the better when they swapped the Eibach/OEM set-up with a decent set of coilovers.

 

I doub't axel problems will occur. I know alot of G35's that are lowered with around 100K and there is no problems with axels