Carbonfreak

Hi everyone,

I have a problem that I hope one of you might be able to help solve.

My problem is if I drive with Traction System-On and Activ-Handling-On, when I'm going full throttle, Traction controls activates when I reach about 124 mph! Traction control doesn't activate if I reach 124 mph at a more moderate pace.

No problem when I’m going full throttle with competitive driving mode on.

I’ve tried to solve the problem with new hubs on all wheel and also got new tyre Michelin Pilot Super Sport front 285/30/19 rear 335/25/20 But that didn't solve the problem.


C6 Z06 2006
ProCharger P-1SC-1 Stage II Supercharger Systems
New wheel hubs on all wheel
New Michelin Pilot Super Sport front 285/30/19 rear 335/25/20

Anyone?

AzDave47

I never had that problem but did discover that cruise control on C6 Corvettes does not work properly above 157 MPH. At 158 MPH and above, activating CC will just have the speed keep climbing!. I discovered this when doing 162 and said to myself oh sht, oh sht as my breakout speed was 165.

I would just suggest using the Competition mode as it still has the nannies working, just allows more freedom and movement before they intervene.

Too-Fast

I have not ever experienced this issue with mine.

449er

Well, just don't drive over 124 mph!

DaOtherOne

The stock wheel sizes for a 2006 Z-06 is F:275/35/18 and R:325/30/19. It's possible the larger tires you have may have something to do with it. Has your tune been updated for the tire size change?

AzDave47

The 19/20" wheels and tires are the OEM option on later model Z06s and the tire circumference is very close to the 18/19" combo so that is not his issue.

dmuellenberg

Pretty sure all C6 Z06 OEM wheels are 18/19, never heard of a 19/20 OEM option. But maybe you are talking about the Z07?

AzDave47

The Z07 is an option on the Z06 model, so that is not OPs problem as the 19/20s he is using are the OEM Z07 size.

Hib Halverson

Since your engine is supercharged, are you sure that the ECM is requesting traction control because with the increased horsepower your actually spinning the tires.

If you rule out actual wheelspin, then, with all due respect to "AzDave4," I'll suggest that it is the later Z06/Z07 wheel/tire package on a car originally equipped with the standard C6 Z06 wheel/tire combination, and not having an aftermarket calibration to correct the for the different wheel/tire combination you have on the car now, is causing the problem.

Put your original wheels and tires back on then go for a test drive. If the problem goes away, you know what's causing traction control to enable when there is no wheel spin.

AzDave47

Hib, there is only 0.2 and 0.1" difference in tire diameter between the 18/19 tire combo and the 19/20 tire combo, well within the capability of differing tire sizes. On the C6Z the rear/front ratio gave no problems in the range of 1.03 to 1.07