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  • #16
    Originally posted by c_w View Post
    Is it same size tyre though? Stock z3m rear wheel is 245/40/17 but e46 m3 18” is 255/40/18, significantly bigger overall.
    Correct.....

    245/40/17 diameter is 24.7
    235/35/18 diameter is 24.5
    255/40/18 diameter is 26
    S50 Black, H&R Arbs/ Springs, B8s, Larini Exhaust

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    • #17
      Best ratios are
      3.46 for 5 speed
      3.64 for 6 speed
      3.9 would be painful. No 1st gear to speak of and in top at 80 it would be screaming it’s Tits off
      On a run you would be deaf , and skint
      My 3.64. Was hard work on a long run with the 5 speed
      Awesome through the gears though
      Now with 6 speed best of both worlds
      [GROWING OLD IS COMPULSARY ---- GROWING UP IS OPTIONAL

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      • #18
        Cheers I’ll keep that in mind

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