At 02:28 5/8/98 EDT, Modl6971 wrote:
>In a message dated 98-05-08 01:23:06 EDT, vanagon@VOLKSWAGEN.ORG writes:
>
><<
> With a bit of math it is easy to figure out the height of a tire and from
> there the circumference of the tire:
>
> 225/70R16 =
>
> 25.4mm = 1"
>
> 225 x .7 x 2 + 406 = 721mm = 28.4"
>
> 225 = how wide the tire is
> 70 = % of side wall to width
> 2 = two side walls >>
>
>What does "406" stand for in the equation. Michael.

406mm = 16" which is the size of my rim.

-- David Marshall, Quesnel BC, mailto:david@volkswagen.org --
   -- 78 1.8L VW Rabbit, 80 2.0L VW Caddy, 87 Audi 5KQ  --
   -- 85 1.8L VW Cabrio, 88 1.6L VW Syncro Double Cab   --
   -- Volkswagen Homepage http://www.volkswagen.org     --
     --  USE DAVID@VOLKSWAGEN.ORG WHEN SENDING EMAIL  --