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Old 02-02-2017, 04:28 PM   #10 (permalink)
rambo
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Join Date: Sep 2016
Location: California
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Drives: 14 370z Sport/Tourin
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Quote:
Originally Posted by NoHyperbole View Post
You and I share many similarities. I too have a 2014 Sport/Touring on the OEM Bridgestone RE050 tires (now at 18,500 miles and 90% worn), and you've described exactly what I've been experiencing the entire time I've owned the car. Further, my previous car was a 350Z that never exhibited these traits, so I understand where you're coming from.

Regarding what you've called "bump steer," here is my take. When driving straight on road with a bunch of minor imperfections, if I take my hands off the steering wheel, it will "dance" or shimmy side to side, although the car will generally track straight. When I hit a moderate to major bump with one front wheel, the steering wheel will do a quick left-right-left (or right-left-right) shake. Again, this is something I never experienced in my 2007 350Z. My thought is that the extra caster in stock 350Zs (around +7.0) versus 370Zs (around +5.0) is a contributing factor in reducing this steering trait.


As for the sensation that the (front) tires are slipping during slow-speed turns at full lock, I know this sensation well, although it seems to happen only when the ground (after rain) or tires (after car wash) are wet. Do you experience this in dry conditions?

As for alignment specs, my numbers on the OEM suspension are as follows:

Camber: LF = -0.6 RF = -0.9 (non-adjustable)
Caster: LF = +4.7 RF = +4.4 (non-adjustable)
Toe: LF = +.05 RF = +.05

Camber: LR = -1.6 RR = -1.5
Toe: LR = +.10 RR = +.10

What are your alignment numbers? I'm curious to see if they differ greatly from mine.

I've tried taking the car to the dealership to have them investigate this issue, but they don't seem to think anything is abnormal. You and I both know something is not quite right. I wonder if this is an issue only a certain number of 2014 Sport/Touring Zs have.


Wow well I certainly hope it has nothing to do with the 2014s although that wouldn't make any sense.
I don't have my last alignment numbers. I dropped the car off at carmax a few weeks after purchase to have them align it and they never gave me the before/after configurations. I wish I asked for them.
I'll likely look into getting new front tires and another alignment.

Are you still currently on the Bridgestone tires?
I was really hoping that I may have incorrect toe settings but if you're experiencing the same problem with good toe settings....

It just sucks considering these cars typically have outstanding handling/suspension and I don't even feel comfortable driving with one hand on certain roads now.
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