ok so I drive on the freeway almost everyday . Recently I put on some black 20" with NITTO 555 tires and everything was cool for a while but recently the slip light for the traction control system has been comin on and I have no idea why? its only on the freeway doin anywhere from like 68-80 and I have to keep turnin it off to stop it any ideas???

 

What's your tire size and rim width?

 

We need to know exact tire sizes to tell you for sure, but my guess is that you didn't maintain the proper stagger between the front and rear tires.

 

hey bro i have the tire sizes for ya about my problem with the traction control
the rim sizes are 28 1/2 in the front and 29 1/2 front and tire sizes are 273 30-20 in the rear and 245 30-20 in the front and my guy said that hes sold those sizes to many people with a Z so i dont know .. any ideas?? thanks

 

those are the right tire sizes to maintain stock stagger, not sure what the problem is then.

 

Looks as though the overall diameter is close enough to stock to avoid problems with TCS (I'm assuming you meant 275/30-20" and not 273/30-18", but that hardly would be a significant difference anyway).

So, a couple of things to consider:

1) I assume these are new tires. If that is true, they have a lot of grease that needs to come off and that happens after just a little bit of driving. After mounting my new Goodyear Eagles, I noticed VDC kick on while doing the first drive on the expressway. The new and greasy tires were slipping around significantly, and VDC sensed a problem.

2) Check your tire pressures. They should be around 34-36 psi. It sounds as though your tire dealer is competent (he put you into the right sized tires), but my dealer over-inflated my Goodyears (41 psi), and the high PSI plus the new greasy tires compounded the problem.

I'm not sure of the best way to rid new tires of that grease. I tried pulling hard left and right, but they were so slippery I actually felt I might lose control. I decided to just drive them conservatively for a while.

--Spike