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Old 04-07-2007, 09:32 AM   #1
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Default Rim/tire size

As I look through the post here, I see a lot of members going from 16" to 19" or even 20" rims. This has to through the speedo off. Doesn't it? I ask because I'm planning on going the other way. I've got 17" swoopies on my SSEi but I kept my snow tires and rims from my 95. The rims are stock 16" with standard size sidewalls (225/60/16). The new Bonne runs 235/55/17. I'm guessing the sidewall difference will make my speedo be close enough. Any thoughts?
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Old 04-07-2007, 09:35 AM   #2
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http://www.miata.net/garage/tirecalc.html

when your speedo reads 60 mph, you will be travelling at 58.8 mph
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Old 04-07-2007, 09:43 AM   #3
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Hmm, handy tool.... thanks Pat!
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