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Old 06-12-2014, 10:01 PM   #1
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19" front and 20" rear wheels

I have seen a set of SVT wheels from a Shelby I would like to get. The wheels are 19" in the front and 20" on the rear. As I would be placing these wheels on a GT, would the traction control sensor start going off? Or throw different codes up? Or has anyone have any issues with this set up?
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Old 06-13-2014, 02:00 AM   #2
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I had 18 up front and 19 in the rear on my 2012 v6 and had no issues

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Old 06-13-2014, 02:50 AM   #3
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Wheel size doesn't really play a part in your Traction Control and ABS. What matters is the tires themselves. Different height/diameter tires have different revolutions per mile. If the revs per mile on your front and rear differ too much, the car will think you're losing traction. Basically the sidewall of your front tires are going to have to be slightly thicker to make up for the smaller diameter wheel. Do the wheels you're looking at have tires on them already? If so, what are the sizes?
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Old 06-13-2014, 05:36 AM   #4
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Yea they have the tires included sizes are:

Front- 19x9.5 rims with 265/45/19
Rear- 20x9.5 rims with 285/35/20
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Old 06-13-2014, 06:38 AM   #5
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With those sizes, the difference is ~15 revs per mile. Not sure at what point the traction control and ABS may start acting up because the car thinks you're skidding, but I would assume this is beyond that point. You can turn AdvanceTrac off to stop it from happening, but you'd have to do this every time you start the car. Tuners can disable Traction Control so that it's always off, but I don't know if these includes AdvanceTrac. Plus, I don't think it gives you the option of turning it on without retuning the vehicle. If the fronts were 255/45-19 instead of 265/40-19, it'd be better because that would put you less than a 5 rev per mile difference. Here's a link that may help you out. Tire Dimension Calculator. Input the tire dimensions and it gives you all kinds of info.
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Old 06-13-2014, 08:45 AM   #6
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Sweet. Thanks for your help.
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