Tyre-Line Original Equipment is the UK's largest independent supplier of wheels and tyres to manufacturers of touring caravans, trailers, lawn and garden equipment, professional groundcare machinery and specialist industrial equipment. |  Company  |  Contact Us  |  Locate Us  |  Site Map  |   Warranty Claim Form   |
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I Tyre-Line Home I Wheel & Tyre Info I Trailer & Caravan Wheels | PCD & Wheel Measurements |
PCD & Wheel Measurements
PCD and Wheel Measurements
  
 		 
 PCD - Pitch Circle Diameter  Wheel Size
4 stud / 6 stud A-B = A-B = PCD.
Centre Stud hole - Centre Stud hole.

3 stud / 5 stud Cx2+D=PCD.
Centre Stud hole to edge and centre bore measurements x 2. Add to diameter of centre bore.
 e.g.  4.5J x 13

Inside Rim Width 4.5"
Nominal Rim Diameter 13"
 Tubeless Wheels
Tubeless radial tyres for caravans and trailers must be fitted only on wheels with profiles designed for bead  retention. The markings of the contours for bead retention follow the rim size designation and are indicated.
H - Hump
H2 - Double Hump
FH - Flat Hump
CH - Combination Hump
SL - Special Ledge

 
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