Toy Cobra Posted October 19, 2010 Report Share Posted October 19, 2010 I have the 20"rear and 19" front SVT wheels on my 2011 with the performance package and I'm considering downsizing to 19s or even 18s all around so I can put some sticky tires on for (spirited) off road driving. I've seen where it is not recommended to deviate more than 3% of the overall wheel/tire diameter from the stock setup. If i go to the 18s it will definitely be more than a 3% diameter difference and even with the low selection of 19" competition tires it will be hard to find a wheel/tire combo that keeps close to the original diameter. I plan on keeping the same size on all four corners. I have gone to the sites where you can plug in different wheel/tire sizes and it will calculate the deviation and wheel rpm. Does anyone know or have you had any experience with making a drastic wheel/tire diameter increase/decrease from the stock setup, will the ABS braking and the Advancetrack sensors think something is wrong? I do turn off the traction control and advancetrack while performing my spirited driving. I want to be sure this will work and I don't have sensors going crazy before sticking alot of cash into wheels and tires. Link to comment Share on other sites More sharing options...
CMG Posted October 19, 2010 Report Share Posted October 19, 2010 ABS...no traction control...no advance trac....not 100% sure but I really doubt it. speedo....yes you will need a tuner to corrrect Link to comment Share on other sites More sharing options...
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