Do people that have installed lowering springs/aspec suspension experience vibrations after lowering?

I know this has been posted in the forums many times, and that the general consensus is that if you lower your TL more than, say, an inch, you might experience axle vibrations on throttle. I did, so I changed both axles for brand new ones, but still got vibrations. I tried raising the car about .3 inches and they came back, but were slightly better. I can't really raise it another .3 inches, because I'm on Tein SA, and I already wasn't that low. I think currently I sit about 25.25 inches all around from ground to fender. I'm thinking if I install springs that match the height of the aspec kit that I will hardly get any vibrations. They are driving me nuts and making this car not very enjoyable to drive.

 

The vibrations in question are on acceleration, particularly bad between 2-4k rpm. So, it definitely seems like an axle limitation

 

did you buy OEM axles or aftermarket? Some aftermarket are not made well and still vibrate after swapping.

 

I had aftermarkets installed, but it was from a reputable shop with honda/acura guys that have worked at dealerships before. I don't think they would install a part they didn't have faith in, but I guess it could be a problem? still would be interested to see what people who have lowering springs say about vibrations

 

LOL, while they may have faith in aftermarket axles working at stock ride height, that in no way means they will work when the car is lowered. The fact is, even the pricey OEM axles fail much quicker when the car is lowered. As I understand it, if you want lowered, swapping out axles on an intermittent basis is just a simple fact of life, and even then, some (many? most?) after market axles will not work well right out of the box.

 

Yea, I kinda figured. Only reason why I had doubts was because they also all own hondas and modify them, and that they aren't shitty autozone axles that cost like $70 a piece. At this point, I just wanna see if anyone on like 1" lowering springs or aspec suspension has any problems with vibrations w/ aftermarket axles, but that's probably a huge shot in the dark ​​​​​​​

 

My 2006 6MT is running the stock suspension; even still, the brand new AutoZone DuraLast axles I put in back in 2018 were only slightly less vibration prone than were the OEM axles they replaced, even though the original axles had over 133,000 miles on them. I "lived" with the DuraLast axles for maybe a year and then tossed them in the trash in favor of a new set of APWI axles. Ahhh, much better.

Regarding the APWI axles, they cost less than the DuraLast axles, but I do not remember hearing from anybody regarding whether they work well on a lowered car.

 

I managed to get my coilovers to go another ~0.3" up, and the vibrations seemed to go away for the most part. Even had like 3 people in the car to test and they were very minimal. I think my ride height from ground to fender through center of wheel was like 25.7"~, so pretty much anything other than an inch drop in the front will cause the axles to vibrate. Dunno about oem axles, not really in the mood to pay 250$ per side just to test lol

 

It's your aftermarket axles. I've been driving my Accord V6 lowered for 13 years without any vibration and I always use OEM axles, currently lowered 1.5" on Tein Advanced. Went up to 120mph with ZERO vibration. You want that problem to completely go away then use OEM.

 

I feel like it's hit or miss with these cars in particular. some people always have vibrations, some have none. For me, raising the car to a 1 inch overall drop gave me minimal vibrations, so I'm just gonna go with that lol.

 

The inboard joint is under more stress when the car is lowered. That tells me that either the inboard cup or the bearings inside have wear. It's also possible that the grounded down parts are the issue. Like I said, I've never had issues using OEM axles and going on nearly 14 years.

 

do you mean the bearing on the axles themselves, or the bearing inside of the transmission and/or half shaft? Because they are both only like 5~ months old at this point I have never heard the term "Inboard cup" or "inboard bearing" before?

and yeah, my TL has 150,000~ miles on it, so stuff is bound to be worn out

 

He is referring to the axles.

 

The axles or half-shafts have inboard and outboard side. The inboard side plugs into the transmission, the outboard side plugs into the wheel bearing in the knuckle. Inside those metal cups are special bearings that rotate. When either the bearings or the cups wear out, they will vibrate upon acceleration. The aftermarket axles are sometimes just junk because there are pre-existing wears that cause these vibrations. It doesn't matter if they are 5 months old to you, they might as well be 10 years old because they were improperly re-conditioned that's why they are just $50 a piece.

http://www.auto-repair-help.com/auto...ile%20steering.

 

Oh, they weren't reconditioned at all. They were a whole new axle all together (at least that's what the manufacturer stated). I think they were like 170$ a piece, and I think the oem 6mt ones were around 330$ per side. Regardless, my issue is basically fixed by raising it to a 1 inch drop. The fact that they aren't oem is likely the reason why they were vibrating at a 2 inch drop.

 

although at this point since I'm only dropped an inch, I kinda want to just go orange koni's and eibach lowering springs. also don't know how long the coilovers will last at this height, since tein states the recommended drop is -1.4" at the minimum, although they say it can go as high as -0.6"

 

How the hell did you drop just 0.6" on Tein coilovers?? The springs would be literally loose not even sitting solid on the collars. I dropped 1.4" on Tein Advanced. Eibach Prokit woud lower 1.5" then you'll be back to the old vibration issue.

 

I'm not dropped .6", I'm dropped about 1.1 inches (going off of the fact that stock height for a 6mt is 26.7"~). and I'm on Tein Street Advance Z. They say you can go as high as a 0.6" drop, which seems sketchy.

I'm also pretty sure Eibach pro kit with koni oranges would be a 1 inch drop.

 

Yeah these cars do not like being lowered, I've had to replace axles every time I do.
Gotta go OEM too I think.

 

I did raxles once and they fail just the same...
oem is tried and true.

oem axles on a TL that was lowered on tein coils and bam, never had another vibration from 34K miles to 112K when I sold it.

 

I'm lowered on OEM axles with no issues, I have a friend using APWI from RockAuto with no issues so far

 

How low are you and your friend?

 

On both my Acura TL I had to address the vibrating axles after lowering on tein ss.
but was pretty slammed.

 

He has about a 2.25" drop
I'm honestly not sure on mine because the previous owner put the coilovers on, but I have a little less than a 1 finger gap