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Thread: Changed wheels and tires, car pulls to either side randomly. What to do?

  1. #1
    LSzajmi's Avatar
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    Default Changed wheels and tires, car pulls to either side randomly. What to do?

    I have recently purchased an EP3, on which I put my other set of wheels with summer tires.
    After that, the car started pulling considerably randomly left or right, I have to forcefully keep it straight otherwise the car would steer into the other lanes. With the other set of wheels and winter tires, I did not have this problem on the same roads.
    I have checked tire pressure, swapped the front ones with the rear but the problems still persists.

    I have also changed front brake pads recently, which were rubbing a bit in the first few hundred kms, but I doubt they would cause the pulling, since the car was steering perfectly with the previous set of wheels.

    Is it possible that different sets of wheels need different front end alignment or could there be some other problem?

    Thank you for your answer!

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    Founder Chris.'s Avatar
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    Are the replacement tyres new? Or used? Uneven tyre wear causes what you're describing, as do crap tyres.

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    Flashy's Avatar
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    Have you checked if they are directional rotation tyres and you have them on the correct side of the car?
    R#3- Cosmic Grey 06 plate Prem EP3
    R#2- Nighthawk Black FN2 GT, R#1- Satin Silver Prem EP3

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    Is it on a certain road that it does it?

    My old EP3 used to pretty bad at tramlining on certain well trodden roads.


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    LSzajmi's Avatar
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    Thank you for the replies, guys!

    The tires are still in good condition and worn evenly, I put them on the correct side as well.

    Having only driven the car a bit and not being familiar with the wheels seems to have made me forget to check the wheel and tire sizes. In fact, the winter set was 16 inch with taller tire walls, while the ones I put on are 17s with shorter walls.

    So this will definitely need adjusting the alignment, and that should fix the problem, right?

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    No, changing the wheels\tires should NOT affect the alignment whatsoever so it should not need adjusting.
    What offset are your summer wheels and are you using spacers?

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    LSzajmi's Avatar
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    No spacers, but the offsets are indeed different. Winter ones are 55, summer ones are 45. If not the size difference, could this cause the problem?

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    45 is standard so should be fine, though a 55 will likely make the geometry more stable due to altered scrub radius which may have been masking a tracking issue, so I'm more inclined to agree that an alignment might help.

    Did you notice any odd or fast wear on the winter tyres? What summer tyres do you have and at what pressures? Does it only "pull" when accelerating, braking & over uneven roads, or is it truly random ie smooth road with a constant speed and it still wants to wander about?

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    Founder Chris.'s Avatar
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    Are we taking about offset here or tyre profile? Standard offset is more like ET60.

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    EP is 45. To be specific ET45, but that's a good question. Is the OP confusing tyre aspect ratio with offset?
    Last edited by SmegHead; 13-04-2018 at 12:26 PM.

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