AirSpeed VW Community Forums

General Forums => Air Speed Lounge => Topic started by: Mike Scott on March 05, 2004, 11:40:39 AM

Title: 135's Outer Diameter?
Post by: Mike Scott on March 05, 2004, 11:40:39 AM

Maybe a wheel and tire question, you guys and gals that run 135's up front. Does this effect your speedo or is the outer diameter pretty close to stock?

Thanks
Mike

Title: 135's Outer Diameter?
Post by: dannyboy on March 05, 2004, 12:47:37 PM

135s are a lot smaller than stock, your speedo will read faster than you are actually doing
dont know how much, there used to be a site with a calculator for that sort of thing but i cant remember what it is
maybe someone else will know
-dan

Title: 135's Outer Diameter?
Post by: Bruce on March 05, 2004, 01:21:48 PM

12-15% fast

Title: 135's Outer Diameter?
Post by: Scratchy on March 05, 2004, 07:03:45 PM

http://www.miata.net/garage/tirecalc.html (http://www.miata.net/garage/tirecalc.html)

It only goes down to 145, but it's a great calculator none the less.