Aftermarket wheels and Traction control going off at high speeds.

[Ansuzgt2]

So about 3 months ago, within a week of eachother, I replaced my exhaust and my wheels, with some Vors.

When I had to drive up north for the week for work, I tried passing someone going 70mph and my Traction control went off, and my speed got bogged down.
First i thought it was Boost loss or something related to Fuel.

Well since then I have had this issue many times. It is a 50/50 coin flip if i try to accelerate quickly when already at high speeds it Will trip up the Traction Control.

The Stock wheel setup is the "raked" where the rears were either taller or wider (cant remember off the top of my head and cant go out and check at the moment)
But the wheels i put on were the stock measurements for the front, placed all around.
The tires are the same, giving them a little more poke in the rear.
And i have spacers on them.

Would this cause the traction control to go off at high speeds? Its the only thing i can think of that would trip it up.

(yes the roads are in good condition with no moisture)

 

[Snowwhite]

this sounds like you have different height tires front and rear. as speed increases, the difference between front and rear speeds increase, triggering traction control. Or, you have a bad wheel speed sensor, but that would trigger some lights on the dashboard. Most likely, wrong tire sizes.

the second number in a tire size is a percentage, not the actual size. so a 225/40/19 tire, the tire is 40% of 225mm tall. a 255/35/19 tire is 35% of 255mm tall.

if you have 225/40/19 in the front and 255/35/19 in the rear, they are very close. that's how you stagger tire sizes. It's hard to understand your message, but do you mean you put the original tires on the replacement wheels?

 

[G-384407]

this sounds like you have different height tires front and rear. as speed increases, the difference between front and rear speeds increase, triggering traction control. Or, you have a bad wheel speed sensor, but that would trigger some lights on the dashboard. Most likely, wrong tire sizes.

the second number in a tire size is a percentage, not the actual size. so a 225/40/19 tire, the tire is 40% of 225mm tall. a 255/35/19 tire is 35% of 255mm tall.

if you have 225/40/19 in the front and 255/35/19 in the rear, they are very close. that's how you stagger tire sizes. It's hard to understand your message, but do you mean you put the original tires on the replacement wheels?

Ya I put the original tires on the new wheels.

 

[Snicklefritz]

that's not how I read it. op says that new wheels match the oem fronts on a staggered setup, which means the op is running 225/40 tires on 8" wide wheels with offset of 34, now at all four corners. I don't get the need for spacers at all, which is the puzzling aspect. offset 34 is the stock setup. 34 in the rear would push the rims 13mm toward the fender which would place the rim approximately where the oem 8.5" wide wheel is with offset 47. why use spacers at all? but spacers shouldn't trigger traction control unless there is some kind of fitment issue. but that should be showing up as vibration and / or loosening of the lug nuts.

 

[7Andrei7]

I understood he used the 225/40 R19 both front and rear.
My guess would be it is a tire problem.

@OP: What kind of tires do you have?

 

[NS_Stinger]

I understood he used the 225/40 R19 both front and rear.
My guess would be it is a tire problem.

@OP: What kind of tires do you have?

Yup that's what I gather too, 225 on the back on a RWD 3.3 GT could potentially break traction if non grippy all season tires are being used at speed.

OP we need to know your exact tire specs and what tires youre using.

 

[Snowwhite]

so you bought 19x8.0" wheels and put the factory 225/40/19 and 255/35/19 tires back on them. got it. unless an 8.0" rim is too narrow for the 255 and causing the tire to bulge to the point that it increases the rolling diameter to the point it triggers the traction control, I don't think that's the problem. you might have a bad speed sensor. can you try running without the spacers to see if the problem goes away? it's the only other thing we can rule out without dismounting the tires and going back to stock. Just pull the rear spacers off and test.

I know this should be a given, but the 255s are on the rear, correct? like you actually checked the tires yourself and didn't just assume the tire guy put them on correctly? because if one or both of the 225s are on the rear I can see why you'd have traction loss on boost.

Another thought, if you pushed them out too far, the rears might be cambered too much, meaning the tire is riding on the inside edge and not getting enough contact patch to get good grip. the higher the speed, the smaller the contact patch.

 

[Volfy]

All tires balloon at higher speeds. When that happens, their effective diameter will grow. Watch top-fuel dragsters to see some extreme cases of tire ballooning.

If the tire is well supported, like the 225/40R19 on a 19x8, it will balloon less. If it is not as well supported, like pinching a 255/35R19 over a narrower 19x8, it will balloon more. I can see the difference between the two causing enough front/rear rolling diameter differential at hwy speed to cause TC fault.

Bad idea.