Hello all,

Ive had my 2008 370GT 6MT RWD for about 2 years now. Car has the sport package, its a right hand drive import with 4WAS installed. Recently car started pulling to the right, steering wheel started wobbling between 50/70 mph. Got new brake discs, pads, bearing mounts and the wheels balanced, turned out the tires started cupping on the inside of the contact patch due to alignment issues. When getting the alignment report, it looks like the whole rear of the car is messed up, and the front has a camber issue. Alignment shop didnt want to touch the rear because of the 4WAS..... I have modified nothing in terms of suspension, running OEM wheels without stretched tires, car is on stock height, no wheel spacers or anything. I do know the front camber is not adjustable from factory, so I am wondering what I need to fix.

Attached the alignment report based on regular G37 specs, translated a bit since I live in the Netherlands.
Any advice on components to inspect/replace? Are those parts interchangeable with the 370Z? I live in europe and having an Imported Jap is not kind on parts availability.



Thanks a million in advance!

 

Starting with the rear: Camber is out on the left side by .06' and split left to right buy .12’. Neither of these should cause an issue with pulling or tire wear. Toe is out but very close side to side with total toe being almost negligible, but this could cause a slight pull and tire wear. I believe the rear is ok as is.

Continuing with the front: Camber was split a lot from left to right .70'. Total toe and left to right toe was really out of specification and could have caused a wheel pull and tire wear. But apparently front toe was corrected. This left you with that front camber split. The camber is not that far out of specification to cause excessive tire wear or a wheel pull and since it is unadjustable, you should be good to go as is.

If it were my vehicle, i would rotate the tires and see if anything improves - first i would swap them left to right to see if the wheel pull follows the tire. If that is the case then put the tires back into the original orientation then switch them front to rear. (or just switch them front to rear and see what happens).

Regarding the tire wear, cupping is caused by an out of balance wheel, tire or brake disc condition, worn bushings or bad struts / springs. Toe wear on tires will appear as a feathering along the edges of the tread. If the tires are currently heavily cupped they could cause handling and drivability issues.

I dont know how many km's are on the car or the road conditions of where you drive. Any excess in either of these could casue an issue with with bushings, ball joints or tie rod ends. The alignment technician should be able to evaluate the conditon of these parts.

Hope this helps and now i know that links means left and rechts means right - thank you google translate!

 

Hi Beefychicken. Thanks for your input! It is greatly valued.

Tires were extremely lightly cupped on the inside, got brand new tires, still shaking in the steering wheel, only between 50/70 mph. Car still pulls to the right. I did notice a `clunk` when rotating the steering wheel to its maximum, when wiggling near its maximum, you can feel something in the steering wheel. Hope its just the outer tie rod and not the ball joint... I always thought that the vibrating at these specific speeds was solely down to wheel balance...

 

One thing i meant to ask; is there a parameter on your alignment sheet showing thrust angle? It should be 0 or very close. If thrust angle is out of specification you could get a slight pull to one side.