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 Post subject: Tire Size Tech
Unread postPosted: Tue Jun 30, 2009 7:41 am 
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Trying to decide which size tire to install on the bug, I looked at a bunche vehicles (mostly bugs) to see how different tire sizes fit in them. Finally made up my mind but then I wondered how would they affect the speed & odometer reading. Using Discount Tire's website, found a cool feature where you enter the "current" tire size and the tire size you want to use, then it compares the 2 on sidewall height, section width, overall diameter, circumference, and revolutions per mile. It even calculates the difference in speed reading vs actual speed of the "new" tire. :cool:

Go to Tire Calculator and plug in your numbers. The difference in speed reading for my new tires is a mere -2.36mph so if it's reading 65mph I know it's actually going a bit slower than that. :razz:

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Unread postPosted: Tue Jun 30, 2009 9:02 am 
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Very interesting. I saw a similar site a couple of years ago but this one is much better.

In my case since I am now running rather tall 15s vs the stock 14s, my speedometer is reading 12% low. 65 mph indicated is actually 73. Makes my normal cruising speed of 55 indicated actually mean I'm going 62.

This also means my odometer is running 12% slow. So my mpg computed on the odometer is actually lower than reality.

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Unread postPosted: Tue Jun 30, 2009 10:34 pm 
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Image

I'm liking the look of these bad boys!! General Grabber AT/2's, 27-8.50-14

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 Post subject: Re: Tire Size Tech
Unread postPosted: Tue Jan 25, 2011 6:59 am 
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bill may wrote:
robzkombi wrote:
Dan no need to measure your tire, I found something that might be useful to most of us here.

http://www.type2.com/library/tires/kabayo.html

this should be in {tire} tech section. =P~

There! :neutral:

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