The percentage difference is very small and varies with brand and model
in any case.
BFG lists 195/75/14 = 816 revs per mile
          205/70/14 = 819 revs per mile

Look at your speedo and there will be a number on the face. For 2WD
Vanagons this is tire revs per mile of the speedo calibration. The 2
speedos I just checked said 805. This means that both of the above sizes
are within 1-2%. Close enough.

Mark Drillock

Mark Dorm wrote:
>
> 185R14 is equivalent to 185/82/14
>
> 195/75/14 is approximate - difference is 2% or 5% depending on the listee
> you speak with. Its close enough: everyone agrees on this. C rating is all
> thats required, so D is very safe for a vanagon...
>
> 205/70/14 will also work....
>