If a ratio isn't specified, the default is approximately 80%... (I thought I recalled it being 82%, but that could be a faulty memory).
On Jul 23, 2008, at 10:40 AM, Ben Cichowski wrote: > 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 > > _________________________________________________________________ > Keep your kids safer online with Windows Live Family Safety. > http://www.windowslive.com/family_safety/overview.html?ocid=TXT_TAGLM_WL_family_safety_072008 |
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