Guys i own a g37x Coupe 09

Today i had my vossen CV1's installed

FRONT 245/35/ZR20 FALKEN FK453
REAR 285/30/ZR20 FALKEN FK453

BRAND NEW

and my car, when driving starts going left and starts going right but itself.

especially during lane changes

On a straight line its perfect but lets say if i'm changing lanes it abruptly turns without my full input. I have to hold the steering really hard in order to keep car in control.

Please help , the car doesn't shake or anything its just turns by itself.

my car is not lowered everything is stock except for my K&N INTAKES AND TOPSPEED Exhaust .

Air pressure, bad tires ??????? FREAKING OUT !!!!

Offset's are 32 in the front and 42 rear

 

Sounds like your alignment is off

 

from installing CV'1 ?

 

but alignment being off would mean the car would lean a specific direction ? no ?

 

Have you hit any potholes recently? Your alignment may be a bit off and w/ the new wider tires the problems may be magnified. And you mentioned tire pressure, I'd go 35psi.
Anything else performed during your tire install?

 

For your alignment, check the rear toe numbers (can you post your alignment specs here?)

 

I have no idea what my tow numbers are or how to get them
This site I read : When to tell that you need alignment - Auto - monitor.co.ug

Seems to indicate that I have a bad alignment issue
As for the previous question I only had my mags mounted on my new tires and my winters
Removed today . They look beautiful as for the tire pressure
35psi all around ?

You guys think it could be the alignment ?

 

Well the alignment was a little off on my winter tires leaning I think right
But now it's horrible on the summers the car goes any direction it feels like
I hope I didn't screw up the car

 

My infiniti dealer is a official vossen dealer you think I should take my car into the dealer or the place I had them installed, because the dealer is really close the other place is about 45min and my cars scaring the crap out of me

The reason I went to that shop is because they gave me the best price on the
New Falkens I mounted on my 2 years old vossens which were driven 2 season in summer only

Thank you for all you quick answers everyone

 

sounds like a caster issue

 

I'm think alignment , because alignment was bad to begin with
And now my big tires and big mags amplified the bad alignment
Twenty folds. Taking it to infiniti dealer Monday
I doubt it's caster, caster effects lowered cars or cars who have had a
Collision but symptoms do not fit that description or behaves
In a way a vehicle would behave that has a bad caster

 

Eccentric bolts can slip all the time. I bet toes way off.

 

My car has 50,000 km I doubt my esscentric bolt is off

 

My car is also not lowered and has stock g37x suspension
The tires I selected have a differential of 0.33

Also before purchasing everything I made sure I did
All the possible research on this forum

Including verifying my offsets and tires sizes

 

Sounds like poor alignment. I'd take it to a reputable shop and have it re-aligned. It should only cost $80 or so.