hey guys i am really hoping someone can help me shed some light on whats going on with my car. a recently installed bc racing coilovers, ichiba spacers and spc rear camber kit. then i had my car aligned at a shop. when i was driving home i noticed that when i get to 80 mph on the highway. my steering wheel starts shaking and the problem gets worse on bad stretches of road... it doesn't happen when i keep it under 80 though. i did some research and i read it could be the spacers or the sway endlinks. i did take a look at the endlinks and they dont sit parallel like the used to. i did lower my vehicle about two inches. i did balance my wheels just a few months ago and all the weights are on. any help will be highly appreciated!! bt

 

Did you adjust camber and toe accordingly? Lowering a car is more than just springs and calling it a day.

Are the spacers and wheels tighten?

Wheel and tire balanced?

 

yeah i just had it aligned yesterday. everything is buttoned up. ill reinstall them again hopefully it helps.

 

It's not the endlinks. I'd look at the spacers.

 

Spacers. Over torque lug nuts or under torque. Wheels out of balance or tire issue?

 

i had the tires mounted and balanced 3 months ago and the car didnt shake before the coils. i think its the front spacers...

 

Spacers most likely

 

Too many shops adjust our -Z-'s based on a number in their book.

Since you have altered and changed the stock suspension, the book numbers are no longer valid.

You need to find a better shop that knows how to setup performance suspensions. These shops are difficult to find. (My suspension was tuned by a guy who is on a NASCAR team . . . he knows his **** and he really did a good job.)

or get one of these:
https://my350z.com/forum/maintenance...l#post10680708

 

Retorque the spacers, I bet you have the crappy bolt on kind. Studs were probably not settled