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Upgrade wheel + tire but got a question

Discussion in 'Model 3' started by tm3p-fan, Jul 27, 2020.

  1. tm3p-fan

    tm3p-fan Member

    Joined:
    Sep 19, 2019
    Messages:
    74
    Location:
    FL
    I have a Stealth Performance M3.
    I was looking at T S p o r t l i n e wheels and I asked whether they could replace the 235/40/19 tire with a +1 size (255/35/19) when I purchase the wheel+tire package. They would not do the +1 size, they say they do not recommend it.

    Using this online calculator:
    tiresize dot com / wheel-offset-calculator

    I get the following measurements... (see pic)

    Questions:

    1. Is there a concern for rubbing the inside fender while doing a full turn of the steering wheel?
    The calculation shows .35" inward, closer to the suspension and .35" outward, toward the inside fender.

    2. Is there a concern for bottoming out since the tire height will be .4" lower, original is 26.4" +1 is .26.0"?
    (Would this give the appearance like dropping the car by .4" or the opposite, showing more space between the tire & fender...I think the latter.)

    I know I will be getting .7" more rubber per wheel on the asphalt so I know I'll use more watts/mile but I'll gain a bit more control without being too aggressive.

    Thoughts from those who have done wheel/tire package upgrades?

    Thanks!
     

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