Home › Forums › The Track › R7 345x35x18 vs 345x30x19

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    • Shannon Whitehead
      Keymaster
      April 12, 2020 at 8:18 am
      Post count: 274799
      #524424

      I don’t think anyone can answer this for you. I don’t think you’d notice a difference, let alone in lap times. I ran the 345-35 for years and never had any issues and put down some very fast lap times.

    • Shannon Whitehead
      Keymaster
      April 12, 2020 at 10:51 am
      Post count: 274799
      #524434

      Thank you Arizona, I realized how subjective it was after posting.

    • Shannon Whitehead
      Keymaster
      June 11, 2025 at 3:11 am
      Post count: 274799
      #35343

      ACR-Extreme currently using 315x30x18(front) and 345x30x19(rear) R7s and familiar with this on track behavior. An opportunity to switch to 18×13 wheels on the rear opened up.
      According to tirerack the overall diameter is the same, a big plus not needing to adjust ride height, should something unexpected occur on track that prompts the need to swap to the 19″.
      R7_345_30_19.jpg
      R7_345_35_18.jpg

      Is the taller profile noticeable between 345x35x18 vs 345x30x19 during lateral load?
      Other than the taller profile is there anything else I should consider in terms of on track behavior/performance?

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