Question weird vibration/camber

[dillanp86]

Hello experts!

So I recently bought a set of gramlights 57xtreme 18x9.5 square. Running 255/35/18 and I'm am RS1 so I got the TRD lowering springs.
I learned from the previous owner of the wheels that'll I'll need 5mm spacers for the front two wheels. I just ordered them, along with some Cuzco camber plates. The previous owner sent some spacers with the wheels but they weren't hub centric, long story short, I get a strong vibration whenever going north of 75mph. I'm hoping the new spacers with the new bolts will solve that. Main question is what else should be causing the vibration, along with what degree of camber for the front and rear? Rear LCA are coming soon hopefully..

Ps: previous owner of wheels also just had them rebalanced before shipping.


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[swarb]

Originally Posted by dillanp86

Hello experts!

So I recently bought a set of gramlights 57xtreme 18x9.5 square. Running 255/35/18 and I'm am RS1 so I got the TRD lowering springs.
I learned from the previous owner of the wheels that'll I'll need 5mm spacers for the front two wheels. I just ordered them, along with some Cuzco camber plates. The previous owner sent some spacers with the wheels but they weren't hub centric, long story short, I get a strong vibration whenever going north of 75mph. I'm hoping the new spacers with the new bolts will solve that. Main question is what else should be causing the vibration, along with what degree of camber for the front and rear? Rear LCA are coming soon hopefully..

Ps: previous owner of wheels also just had them rebalanced before shipping.


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More info needed.
Offset? Double check lug nuts. Find out where vibration is coming from and swap out wheel to another corner.
Why would previous owner rebalance them them before shipping? Sounds fishy. He possibly couldn't get them to balance and god rid of them. I'd rebalance them.
When was the last time you had an alignment? was the before or after the springs? I'd get an alignment.
Spacers, hubcentric or not won't matter as long as you tighten correctly.

[Mr.ac]

Sounds to me like he curbed the wheel and now has a nice wobble to it.
I really don't see how spacers and camber would sove a bad wheel.

As per Swarb said it maybe possible that the lug nuts are not seating properly.
Another thing you could do is get the wheel and tire roadforce balanced, it costs more but it's with the price if you tried everything else.

[dillanp86]

+40 offset and the vibration is coming from the front two wheels. The seller seems legit and friendly. Just got the alignment on Monday. I feel like part of the issue is the bolts aren't long enough, read on here that anything over 3mm spacers will need longer bolts.


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[dillanp86]

Originally Posted by swarb

More info needed.

Offset? Double check lug nuts. Find out where vibration is coming from and swap out wheel to another corner.

Why would previous owner rebalance them them before shipping? Sounds fishy. He possibly couldn't get them to balance and god rid of them. I'd rebalance them.

When was the last time you had an alignment? was the before or after the springs? I'd get an alignment.

Spacers, hubcentric or not won't matter as long as you tighten correctly.

^


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[swarb]

Originally Posted by dillanp86

+40 offset and the vibration is coming from the front two wheels. The seller seems legit and friendly. Just got the alignment on Monday. I feel like part of the issue is the bolts aren't long enough, read on here that anything over 3mm spacers will need longer bolts.


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Recommend minimum thread engagement is 1:1 the width of the bolt. Stud is m12 aka 12mm. 1.25 threading, you need 10 turns to get to 12.5mm. 3mm spacer should work. 5mm spacer, you are at 8 turns or so aka not enough thread engagement. On other cars, 5mm fits fine because they have 1.5 threading, 8 turns=12mm.

Put your phone up there and take a pic or video to see how much clearance you have then try 3mm spacers.

9.5 width does not fit well on stock struts, they either poke a lot or are dangerously close(<5mm) to rubbing. As soon as you lower it, add camber, etc, the clearance is even less. Or take the risk with 5mm spacers. Either way, not too safe.

That is why everyone always says, -just get coils.
You want big boy wheels? Get big boy suspension. Or step it down a notch... Or get extended lugs... Or live dangerously.

[dillanp86]

Originally Posted by swarb

Recommend minimum thread engagement is 1:1 the width of the bolt. Stud is m12 aka 12mm. 1.25 threading, you need 10 turns to get to 12.5mm. 3mm spacer should work. 5mm spacer, you are at 8 turns or so aka not enough thread engagement. On other cars, 5mm fits fine because they have 1.5 threading, 8 turns=12mm.

Put your phone up there and take a pic or video to see how much clearance you have then try 3mm spacers.

9.5 width does not fit well on stock struts, they either poke a lot or are dangerously close(<5mm) to rubbing. As soon as you lower it, add camber, etc, the clearance is even less. Or take the risk with 5mm spacers. Either way, not too safe.

That is why everyone always says, -just get coils.
You want big boy wheels? Get big boy suspension. Or step it down a notch... Or get extended lugs... Or live dangerously.

Thanks! Already ordered the spacers so I'll play it safe. There is just a little rubbing at full lock without the 5mm spacers. I'll have to save up for coils


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[swarb]

Originally Posted by dillanp86

Thanks! Already ordered the spacers so I'll play it safe. There is just a little rubbing at full lock without the 5mm spacers. I'll have to save up for coils


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Find out where it is rubbing. I could be the inner lip. Or the tie rod. 3mm is cutting it really close. Does it still vibrate with the spacers off?

[Tcoat]

Stop doing "north of 75" until you get it sorted out. Things can go wrong fast!

[dillanp86]

Originally Posted by swarb

Find out where it is rubbing. I could be the inner lip. Or the tie rod. 3mm is cutting it really close. Does it still vibrate with the spacers off?

I believe it's the inner lip touching the spring. Will have to jack up the car and see, useless while it's on the ground. And yeah pretty sure it did still do the same thing out with the spacers

[dillanp86]

Originally Posted by Tcoat

Stop doing "north of 75" until you get it sorted out. Things can go wrong fast!

No worries I'm keeping it easy for now :'(


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