Ive heard several things about VDC, and still dont have a clue about it. I know it keeps your tires from spinning, and that somehow you can mess it up by changing tire and/or wheel size. Does any one have any information or anwsers about VDC.

 

It gets in the way when you are trying to have some fun

 

Do you have a more specific question? I believe it stands for Vehicle Dynamic Control. And yes, it does take some of the fun out as a safety precaution. If one wheel is slipping or spinning signifiantly more than another it senses a danger and will compensate by transfering energy, pulling timing/fuel, etc etc in order to control the slip. VDC is not a big fan of people who dramatically change the stagger of the tire sizes, or even worse...the people who use a shorter rear tire than the front

 

VDC = Vehicle Dynamic Control. An onboard computer measures the individual rotation rate of your four wheels using the ABS sensor. It then compares the rotation rate to steering input, throttle input, and a yaw sensor (measuring rate of car rotation). Together, these inputs are compared to a pre-programmed algorithm that (hopefully) prevents you from losing control of the car in and adverse situation.

Example: You head into a sharp left hander hard on the throttle, turn the wheel left without lifting, and the VDC senses the rear of the car starting to fishtail to your right. VDC then takes control of your car to let you steer thru the corner by
1) retarding the throttle
2) applying the inside left rear brake

To answer your original questions, VDC DOES NOT prevent wheels from spinning; TCS does. Changing overall tire diameter ratio front-to-rear without reprogramming the VDC algorithm will screw up the intended operation of VDC as determined by Nissan.
HTH

 

So the VDC on my car isnt working properly now that i changed tire and wheel size?

 

So by me having a 245/35/19 on frong, and a 275/30/19 on the rear that messed up my VDC bad.

 

ohh the rears must me 35 and the fronts should have been 30 thats the problem, just like the stock profile difference on the 18 inch rims on cars with vdc.

 

Well now what should i do try to sell my rear tires and get a size taller than the fronts? If i did that then i could also get a wider rear tire to cover more of my wheel that would make me feel better.