Sorry to hear that.
I've had spacers on my 3 previous vehicle...2 FX's & this G37xS.
I have yet to experience any vibration.

Were they torqued correctly?
What brand & version were they?

 

I've used every set of spacers except for the most expensive brand, (I forget the name), and the 180 brand spacers. I've used both versions, 1&2, 1 is a PITA. I never had a torque wrench, but I do it basically more than hand tight if that makes sense.

 

The quality of the spacers is the main reason why you have experienced vibration...plus not having them torqued to the correct lbs/ft.

On my FX's I had H&R Trac+ 20mm DRS spacers and never had any issues with them.
This time I gambled and went with B2AutoDesign's 20mm DRM spacers instead.
I was reassured that they were as high quality as the H&R's for less $$$...so far so good.

 

It doesn't. Buy a torque wrench.

 

I agree or who ever installs them need to torque them correctly.
This is an important & imperative step in having the spacers installed.

 

Thanks for posting the pictures, car looks great with the spacers on. Let us know how your alignment goes.

 

Thanks...will do

 

Here is Selina's alignment:



Managed to get "toe" in spec...camber a bit off, but livable.
Considering camber kit for fronts, but might just leave it alone.

What ya think?

 

Toe is the biggie so at least your tires won't get crazy wear. Maybe you can just get a right front arm
Are your tires directional or "outside biased", if they're outside biased (forgot the official term) just rotate side to side every oil change and you should be alright, might shave 10% off your tread life but a little extra camber is sometimes preferred if you're doing a lot of speed cornering.

I think I'd save the money for something else, who knows, might even have someone that can tweak it just a bit better next time around, some alignment guys can work some magic

 

Alignment in color:



Thanks Newt for responding in both of my threads

I agree regarding the toe being in spec is most important.
The OEM Dunlop SP Sport Maxx 225/50/18 are non-unidirectional, so they can be rotated in any order.

Tire wear is not too much of a concern, since I plan to replace the Dunlops with something better...they are too noisy on the hwy.

I'm looking into Hankook Ventus V4 ES H105...
Hankook*Ventus V4 ES H105

Any other tires I should consider?

As for getting the alignment better, the tech who did it was actually really good and was sorry he couldn't get it better in spec.
I'll probably wait until the weather gets warmer and see what my Infiniti Service can do.

 

I'm really liking my Toyo Proxes4 Plus, best A/S tires I've had, and I've had Dunlop Sport Signature, BFG G-Force KDW, Falkens. Great dry grip, sidewalls are quite firm, and excellent in the rain, quiet too!
Here's a lengthy review on them on a high HP SRT Mopar
:MoparMax: Product Review - Toyo Proxes 4 Plus Ultra-High Performance All-Season Tire - 8/2/2012
I got mine from a vendor on G37 Treadepot, if you're interested ask for Andrew & tell him about myG37, you'll get an even better deal
PROXES 4 PLUS Tires by Toyo - Buy PROXES 4 PLUS Online | Tread Depot

 

I again appreciate the helpful information and links.
I have heard great things about Toyo Proxes 4 from friends on my FX forums.
I've had excellent past experience with Hankook Ventus RH06 on both of my FX's and they are very similar to the Proxes.
I was hoping that the V4 ES H105's is just as good for the G.
I will look into both and decide on whichever one I go with when the time comes for me to replace the OEM Dunlops.

 

All-Season tires, guys? Srsly?

 

You really should have your coffee before you start posting, Srsly
Check out that review link I posted, these tires aren't some slippery "good for everything, great for nothing" tires.
BTW, G'Morning

 

OK, Newt. I read that Mopar article, which was all about impressions, and hearsay, instead of actual, controlled testing methods. Lots of "we thought" and "it may have" and then the big disclaimer... it was a casual Southern California review focused far more on daily driving than throwing the car into a turn, or launching it off the line.

All that aside, these Toyo's could very well be the best All-Season tires you can buy today. Hooray for Toyo. And as good an achievement as that may be, it's still far less than what a quality High-Performance Summer tire can deliver during the summer, or what a good Snow Tire can deliver during the winter.

So yes, my friend... Srsly.