Overall diameter of the RA08 185 = 25.6 inches, the 195 =26.3 inches
You'll have to look for  the specs on the tires you are comparing to.

On 8/10/07, Bill Bowman <bill@bnnta.com> wrote:
>
> Hi all,
>
> I'm trying to decide on the purchase from the Bus Depot of a set of
> Hankook RA-08 195 series (not the 185's) tires for my '87 Vanagon
> Westy.  Perhaps - OKAY! - I'm definitely getting anal about this.  I'm
> hoping that the outer tire diameter of the 195 series Hankook's is a bit
> bigger/taller than the Michelin MXL 205/70R14" tires currently on my Carat
> alloys.
>
>