[Vwdiesel] Tire size conversion

[Shawn Wright]

On 27 Aug 2004 at 23:27, Libbybapa at wmconnect.com <Libbybapa at wmconnect.com> wrote:

> I have some large tires that I would like to put on my soon to be 1.6TD 
> vanagon.  They only measurements printed on the tires are 27 X 8.5 R 14.  They
> measure out to 27" tall and 8.5" wide.  Doing my best at converting this to the
> accepted standard measurement I get 215.9/76.5 R 14 or simplified 216/76 R 14. 
> Can someone who knows doublecheck my math, I don't know if I'm converting  it
> correctly, and would like to use a nifty RPM tire size calculator.  TIA Andrew

Andrew,

If they are a brand name tire, you can check the mfr web site for diameter specs. I just 
put BFG A/T TA's in this size on the rear of Westy. They are about 1" taller overall when 
mounted than the Yoko Y370G in 195/75R14 size that I have on the front. I noticed a 
very slight drop in RPM at a given speed, since the front remained the same, thus the 
speedo remained unchanged. 
You may be better of measuring the exact diameter when mounted, since there is quite 
a variation between actual tire sizes in a given P metric size.--
Shawn Wright
http://Zuiko.sls.bc.ca/swright
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