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Would 235/40/20 fit on p3d?

Discussion in 'Model 3' started by Dyhppy, Nov 10, 2018.

  1. gilscales

    gilscales Active Member

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    #21 gilscales, Jun 12, 2019 at 7:08 PM
    Last edited: Jun 12, 2019 at 7:14 PM
    I have had 255's on my car for 6,000 miles (shown in my profile pic) with zero problems and plenty of clearance, they are on the original 19" sport wheels but are still a 27" tall tire and the 255/40/19 is the same size as a 255/35/20, they are the Continental Extremecontact DW S06
    tires.jsp
    Also as a bonus my speedo is right on the money so it must have been reading off with the stock tires

    Here is the 20" version
    https://www.tirerack.com/tires/tires.jsp?tireMake=Continental&tireModel=ExtremeContact+DWS+06&partnum=535WR0DWS06XL&vehicleSearch=false&fromCompare1=yes
     
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  2. zhu-

    zhu- Member

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    Do you know if this is just the case with 20s or would 255/40R19 have potentially the same problem since the diameter is the same? I've been thinking about getting 19s with 255/40 for better pothole protection but if there will be issues I might stick with 245/45R18.
     
  3. 4hs93lsi2

    4hs93lsi2 Member

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    #23 4hs93lsi2, Jun 12, 2019 at 8:04 PM
    Last edited: Jun 12, 2019 at 8:23 PM
    I feel like 255/40R19 should have the same problem (the clearance with the front suspension arm) since the diameter is the same. But depending on the tire and your comfort level with clearance there may not be a problem. I can't talk past @gilscales experience. Works great in that situation. By the way, I'm really happy for these guys fitting 255s. I may just be conservative. I haven't fit 245 or 255 yet, and I'm not an expert. I mostly just google as much as possible for a week or so and found peace when I read that Tesla was running 245/35R20 with their track model 3 and randy Pobst. I'll for sure post some clearance pictures for you all in maybe two weeks. A lot of unplugged parts are arriving, and my car will be in the shop for a bit. The getyourwheels guys ([email protected]) are really easy to talk to on the phone and generous with their fitment knowledge.
     
  4. gilscales

    gilscales Active Member

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    9067333E-C551-4416-AC5C-7F39A7B125E0.jpeg 7DFEE1E3-C64A-41EB-823F-F6FD784F9990.jpeg
    Clearance pics for my 255/40/19’s
    It is tight but never rubbed, not once, at least 5/16” or closer to 3/8” to the arm
     
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  5. zhu-

    zhu- Member

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    @gilscales Is there a noticeable reduction in the wheel gap with 255s? I thought that might be another benefit to going wider with larger diameter.
     
  6. gilscales

    gilscales Active Member

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    It is noticeable but it is only .6" larger in diameter so the gap will close .3" all around, to me this looks like the tire that belongs on the car, however, at 10% range hit I can see why they did not run these!, The car rides better, handles better and is much more sure footed in an emergency maneuver so I consider the trade off of range totally worth it.
     
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  7. dwalme

    dwalme Member

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    Do you think you actually lost 10% range or is some of that just an error from the car not knowing that you are actually travelling further per tire rotation than the smaller diameter factory tires?
     
  8. gilscales

    gilscales Active Member

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    That is a good question and based on a 26.4" diameter tire and going to 27" diameter is approx. 2.3%, at somewhere around 16,800 miles give or take my lifetime usage was at 248 wh/mi, I made a new setting to track the usage on the new tires and at first it was over 300 but after 6,500 miles has settled down to 272 wh/mi so far and continues to drop, at the same mileage with the stock tires it was over 260, however, was probably due to more aggressive driving style as the car was new to me and I just abused the go pedal more!
     

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