245 40 18 tire, what's the definitive yea or nea?

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03-19-2007, 12:50 PM

tehA8PIMP

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245 40 18 tire, what's the definitive yea or nea?

Is the difference of 5 on the sidewall aspect ratio a huge deal for an a8/s8?

The tireguide does not list it afaik

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03-19-2007, 01:15 PM

marcodant

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you can do the math and see with this

it will tell you tire sizes<ul><li><a href="http://www.miata.net/garage/tirecalc.html">http://www.miata.net/garage/tirecalc.html</a</li></ul>

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03-19-2007, 01:29 PM

ttuling

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And check the load capacity, especially if reducing the cross-sectional area

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03-19-2007, 03:32 PM

ryoung

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You won't like the extra 1/2" of wheel gap or the 4% speedo error.

That, plus the reduced load capacity, is why it's not listed.

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