Hubcentric adapter question

[rocco16 at sbcglobal.net (LEF)]

Here's what I did, when I had the exact same problem:

 Take your measurements to the local Discount Tire.  They will then tell you which ring is the proper one.  Hub and wheel hole diameters are standardized.  Don't worry about a fraction of a mm; point-one mm is only .004". 

Larry
code5coupe 
  ----- Original Message ----- 
  From: C Boyko 
  To: scirocco-l@scirocco.org 
  Sent: Tuesday, April 18, 2006 5:30 PM
  Subject: Hubcentric adapter question


  Okay, so I'm measuring some wheels for hubcentric rings. First, are our
  stock hubs 57.1mm? That's what I'm getting with the calipers, just wanted
  to confirm.

  Second, using a variety of methods, I'm getting either 74 or 75mm for the
  rim's "seat" diameter. I'd say 74.5 was the most accurate measurement, it's
  tough because my calipers won't fit inside the rim, I used a depth guage,
  it gave me a bit over 74mm, but it had a square end which won't set up
  exactly at the rim, there's a teeny semicircular gap. And using my 73mm
  rings and some plasticine, I get exactly 74.5mm each time. So should I
  order the 74mm ring and not sweat the 0.5mm? I'd hate to get the 75 and not
  have it go in the hole. I suppose anything's better than air...

  Oh, and one more, what are the "normal" 14" tire sizes you guys are running. 

  LMK what you think, I'd like to get the rings ordered ASAP.
  cathy


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