1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Tyre quiz

Discussion in 'Problems, Fixes, Tips...' started by shane, Aug 23, 2016.

  1. shane

    shane Copenworld Regular

    Joined:
    Feb 29, 2016
    Location:
    Devon
    Car(s):
    Daihatsu Copen 0.66
    I'm thinking of replacing my wheels for some new wider alloys - 6" with an offset of somewhere around 35, and maybe use some shims to make sure the tyres don't foul the steering rods inside.

    In theory I could use some 185/50 rubber, but I am anxious the new width might mean they foul the wheel arches over bumps. I could go down to 185/45 to make a bit of room, but I'm not sure how that might look...

    Anyway, the long and the short of it is this - Do you have wider wheels? What tyres do you have, and do they run with no problems?

    Cheers
     
  2. Salieri

    Salieri Copenworld Veteran

    Joined:
    Jun 19, 2012
    Location:
    Germany
    Car(s):
    Used to have a White Copen, but I sold it in 2023
    185/45 tyres should be OK on a 6x15 inch rim without modification
     
    shane likes this.
  3. Bemused

    Bemused Copenworld Regular

    Joined:
    Jun 25, 2016
    Location:
    Stoke-on-Trentishoe
    Car(s):
    Copen
    As Salieri says, 185/45 R15 here on 6.5 inch 38mm OS with no problems whatsoever.
     
    shane likes this.
  4. shane

    shane Copenworld Regular

    Joined:
    Feb 29, 2016
    Location:
    Devon
    Car(s):
    Daihatsu Copen 0.66
    I currently have 165/50s on standard wheels. Did you go down to 45s to make clearance, or for some other reason?
     
  5. Salieri

    Salieri Copenworld Veteran

    Joined:
    Jun 19, 2012
    Location:
    Germany
    Car(s):
    Used to have a White Copen, but I sold it in 2023
    The 45 or 50 is a percentage. 45% of 185mm or 50% of 165mm.
    Even at a 185/45 tyre, the rubber is a few millimeters taller than with the standard 165/50.
    So for clearance reasons, you should maybe not go for a 50 or 55 tyre
     
    shane likes this.
  6. shane

    shane Copenworld Regular

    Joined:
    Feb 29, 2016
    Location:
    Devon
    Car(s):
    Daihatsu Copen 0.66
    Ah... Now it all makes sense. Thanks for that! I'll go with 45s.
     
  7. Bemused

    Bemused Copenworld Regular

    Joined:
    Jun 25, 2016
    Location:
    Stoke-on-Trentishoe
    Car(s):
    Copen
    Yes the wider 6.5 inch rim needed a wider tyre so moved from 160 tp 185mm wide.
    But the 185 tyre at 50% profile is a larger diameter so dropping to 45 mostly balances every thing back up.
     

Share This Page