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Reducing total wheel diameter

Kaibo Sep 13, 2013

  1. Kaibo

    Kaibo Member

    Hi all, was looking at some standard 17's but with 205/40/17 tyres, I'm currently running 19's with 225/40/19's, does anyone know how it would effect acceleration if at all and how much the speedo would be out? This is on my A3 V6.

    Cheers Kai
  2. Oranoco

    Oranoco Well-Known Member

    That's a difference of about 10% so your Speedo will under read. Acceleration is likel to be better but such a huge difference is going to look stupid in the arches.

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