Whan the second number or aspect ratio is not listed, it is usually an 82
aspect ratio tire. If you line up a number of tires of the same size from
different manufacturers, you may be surprised by how much the actual size
can vary. Vanagon speedometers can often be optomisitc anyway.

Dennis

>From: Ben Cichowski <aquasheck@HOTMAIL.COM>
>Reply-To: Ben Cichowski <aquasheck@HOTMAIL.COM>
>To: vanagon@GERRY.VANAGON.COM
>Subject: Re: Tire Question (not the dreaded tire thread at all)
>Date: Wed, 23 Jul 2008 09:40:13 -0500
>
>Hi Jeff,
>
>We'd have to know the ratio on the first tire (someone probably knows that
>tire by memory though, it's a popular tire).
>
>The first number is the width in mm and the second number (70 in the case
>of the Michelin tire) is the % of that first number that makes up the
>sidewall. So your 205/70R14 is about equiv to a 185/78R14 in overall
>diameter (143.5 mm of sidewall).
>If that second number is bigger than 78 on your Hancook...then your old
>tires are larger in diameter...which I'm pretty sure it is indeed larger.
>
>So, if both are 14" tires, I'm guessing your new tires are smaller in
>overall diameter and will spin faster...i.e. show you going faster than you
>actually are.
>BTW....you are talking about a 205/70R14 as the message said...right?
>Because that is a pretty common 15" size.....
>
>-Ben
>
> > Date: Wed, 23 Jul 2008 09:20:55 -0500
> > From: magikvw@GMAIL.COM
> > Subject: Tire Question (not the dreaded tire thread at all)
> > To: vanagon@GERRY.VANAGON.COM
> >
> > Ok, this may seem like a dumb question but oh well -
> >
> > If I went from Hankook 185R14 tires to a Michelin 205/70R14 would one
>expect
> > a change in my speedo and odometer accuracy?
> >
> >
> > --
> > Thanks,
> >
> > Jeff
> > '90 Carat (Grover)
> > '86 (We call this one Parts)
> > '78 Bus (Melissa) Patty's Bus
>
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