255/55/20 vs 255/50/20

Discussion in 'LR4' started by rickyn f355, Nov 9, 2018.

  1. rickyn f355

    rickyn f355 Full Access Member

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    on later model LR4s it seems the 20 inch oem size is 255/50/20. i found a set of wheels (thanks westporter) that i bought and they have 255/55s on them and these wheels came off an LR4. Did LR deliver cars with both 255/55 and 255/50s in 20?
     
  2. catman

    catman Full Access Member

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    LR3/LR4 tires are 30" as the stock size, regardless of whether it is 18,19, or 20" wheels. This would be 255/50/20. However, you can safely fit up to about 31.5" before any potential rubbing or modication requirements become part of the equation. 255/55/20 are 31" tires and should fit fine. You will want to get a matching spare in 31" however in case you ever need to use it. It is not ideal to run a spare that is 1" smaller in diameter if you get a flat.
     
  3. rickyn f355

    rickyn f355 Full Access Member

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    I dont want the speedometer and odometer to be off so ill prob stick with 255/50s


    Sent from my iPhone using Tapatalk
     
  4. rickyn f355

    rickyn f355 Full Access Member

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    good way to show less miles on a car - i wld never do it but im sure people do it all the time.
     
  5. TheWidup

    TheWidup Full Access Member

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    I don't think that's how it works anymore. There's a speed sensor in the transmission that does all the work on calculating miles. (At least I'm pretty sure most vehicles have that)
     
  6. ktm525

    ktm525 Full Access Member

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    It will throw the odo off. Transmission sensor or not it is assuming a final wheel circumference. Off course increasing tire size also raises the overall gearing (ie. your vehicle will have less power). It will affect acceleration and perhaps the vehicles ability to hold top gear on the highway in certain conditions. The change between 55 and 50 series will be slight. Some may not even notice.
     
  7. rickyn f355

    rickyn f355 Full Access Member

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    3.4% difference.
     
  8. jwest

    jwest Full Access Member

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    Actually I think these lr’s still use a wheel sensor as proven by running a gps and seeing obvious % differences depending on tire size.

    It becomes especially apparent with 32+ and larger.
     
  9. TheWidup

    TheWidup Full Access Member

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    Yeah. I stand corrected. You'd think this would have been solved by now.
     
    jwest likes this.

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