16inch tyres on 17inch rims?

Discussion in 'Technical' started by bigalracing, Jan 16, 2005.

  1. bigalracing

    bigalracing Member

    I noticed the other day that I have 16inch tyres on 17inch rims.
    Is this the norm?
     
  2. RedZedMikey

    RedZedMikey RZM should now be DZM

    Absolutely not - not sure if the tyres could even be stretched to fit.

    The tyre size should be easy to identify - what tells you they are 17" rims?
     
  3. bigalracing

    bigalracing Member

    I measured them and they were abit larger then 17in,

    or is that not the correct way of measuring rim sizes?
     
  4. Benny_C

    Benny_C About as subtle as...

    Doesn't sound right...

    I don't think 16" tyres could stretch to fit 17" rim.

    I remember a short while ago there were big enforcements to stop people from trying to stretch 16.5" tyres on 17" rims because there were unstable when you inflate them. But I'm sure 16" onto a 17" can't be done.

    On the inner side of the rim (around where your balancing weights go) there should be the size. Eg: 16X8, or 17X9.5 etc...
     
  5. K-zed

    K-zed Secret Squirrel

    Everything you ever wanted to know about TYRES & WHEELS >>>

    .... you'll find HERE

    Bookmark this page for future reference.
     
  6. AndyMac

    AndyMac Better than you

    Nope, no way, zip, nadda, no chance...say what?

    You woulda ripped em to shreddes the first time the wall flexed, or r you just driving slow in a straight line??:p
     
  7. bigalracing

    bigalracing Member

    Thats what I thought, no way would a 16 tyre fit a

    17 rim! But my tyre has R16 and my wheels measure 17+ with a tape measure. I will pull one of the wheels off sometime this week when I have time and check to see if any rim markings. Maybe the measurement from inside the rim is 16?

    Thanks
     
  8. IB

    IB ?????

    My guess is that the 16" is measured where the bead sits ...>>

    so if the lip is 1/2" higher than the bead, then a 16" wheel would measure 17" from lip to lip.
     
  9. WYKKED

    WYKKED <b><font color=red>2 Much Trouble</font></b>

    See Mikey's post 2 threads up.
     
  10. RedZedMikey

    RedZedMikey RZM should now be DZM

    Whoops - I've moved it here ...

    (must have hit the wrong button!)
    A standard Z wheel measures 17ΒΌ" across the front face of the rim, so the 16" measurement is probably the diameter of the wheel at the point where the tyre is mounted; therefore your rims should be 16".
     
  11. red32

    red32 You talkin' to me?

    Found this diagram...

    [​IMG]

    Note that the wheel diameter is measured bead-seat - bead-seat.
     
  12. bigalracing

    bigalracing Member

    ahh..thanks both red's, mystery solved.
     

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