350z Traction Control and Square Tires

So I experienced something while driving the 350z yesterday that I haven’t experienced in quite a while. Typically the 350z comes with a staggered tire setup, meaning that the front tires are usually a smaller size than the rears. A week or two ago I got some new street tires put on the car, the new tires are “square” meaning the fronts are the same size as the rear.

This actually gives you the ability to rotate the wheels/tires (assuming the wheels are the same size), which can go a long way in making your tires last longer. The old set I had taken off were actually okay in the front, but the rears were bald, being able to rotate could have helped prevent that.

The downfall of having a square setup, at least with a 350z, is that the computer isn’t setup for that, not having the stagger causes the front tires to run at a different speed in relation to the rear tires. This causes the computer to freak out, though most of the time it is fine, where it will freak out is typically when you are accelerating on an onramp.

I had this happen for the first time since some time in 2006 (when I sold my first 350z) last night. It wasn’t a huge shocker, but it was a bit of a surprise. You can avoid the computer issue, but it requires turning off the traction control, something you can’t do when it is activated by the differing speeds. So for now, I will continue to turn off the traction control (tcs) when I get in the car.

I’m curious to see if there are any ways to disable the TCS by default, and only have it turn on when you press the button. That would be extremely useful in autocross as you NEVER want traction control in a 350z enabled when autocrossing.


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