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Author Topic: 135's Outer Diameter?  (Read 1703 times)

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Offline Mike Scott

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135's Outer Diameter?
« 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
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Offline dannyboy

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135's Outer Diameter?
« Reply #1 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
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Offline Bruce

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135's Outer Diameter?
« Reply #2 on: March 05, 2004, 01:21:48 PM »
12-15% fast
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Offline Scratchy

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135's Outer Diameter?
« Reply #3 on: March 05, 2004, 07:03:45 PM »
http://www.miata.net/garage/tirecalc.html

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