how far off is my speedo ? - TCCoA Forums
 
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post #1 of 3 (permalink) Old 01-18-2004, 07:55 PM Thread Starter
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Join Date: Dec 2003
Location: NC
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how far off is my speedo ?

hello group,
i was just wondering how far off my speedo is, tire size called for on my bird is 215/70r15 ,im using 235/60r15 , would like to go to 245/60r15 this is the reason why, according to the uniroyal tire website, these are the diameter sizes.

215/70r15 26.9 in.

235/60r15 26.2 in.

245/60r15 26.6 in.

seems the speedo would be pretty close to right with the 245's

thanks for any info on this

Frank

95 T-bird 4.6
dual Flowmaster mufflers,resonator removed, removed air intake baffle,P245/60R15 Tigar Paws, 3.08 trac-loc rear,
transgo shift kit.
94,000 mi.

96 Crown Vic LX wifes car
stock, leather,very nice car
156,000 mi.
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post #2 of 3 (permalink) Old 01-19-2004, 01:18 AM
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According to http://www.miata.net/garage/tirecalc.html
your speedo would show +1% and that's not bad...

My speedo is dead on until 60mph then it displays to little!


//Thyg0d


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post #3 of 3 (permalink) Old 01-19-2004, 11:31 AM Thread Starter
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Join Date: Dec 2003
Location: NC
Age: 63
Posts: 56
Quote:
Originally posted by Thyg0d
According to http://www.miata.net/garage/tirecalc.html
your speedo would show +1% and that's not bad...

My speedo is dead on until 60mph then it displays to little!


//Thyg0d
hey thanks a bunch for the link, that is a very helpfull website.

Frank

95 T-bird 4.6
dual Flowmaster mufflers,resonator removed, removed air intake baffle,P245/60R15 Tigar Paws, 3.08 trac-loc rear,
transgo shift kit.
94,000 mi.

96 Crown Vic LX wifes car
stock, leather,very nice car
156,000 mi.
95bird4.6 is offline  
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