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Tire Size and Speedo Reading

Please help me settle a "discussion" my neighbor and I are having. As most of you already know, the stock tires on my 2003 TJ Sport are Goodyear GSA (I know, it stands for "Get Stuck Anywhere") 30x9.5/15. As soon as I can justify new tires, (wifey has issues) I will be putting on 31x10.5/15, probably MT/R's or the like. Here is the topic of "discussion"... I say the speedo will read less than the actual speed I'm travelling with the larger tires and my neighbor says the speedo will read more than than the actual speed. Can someone please chime in here? Thanks. John

Reply to
John R
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I have 33s on my CJ and I never changed my trans cog so I comp my speedometer by about 10 miles per hour up. The bigger tire rolls further per rev so your speed shows slower.

Reply to
Arvin

On 8 Oct 2003 04:21:48 -0700, john snipped-for-privacy@hotmail.com (John R) shared the following:

You are right. He is wrong.

-- Travis FOR SALE: '63 VW Camo Baja... $1000 *FIRM*

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that soak into your ears are whispered, not yelled.

:wq!

Reply to
travis

On 8 Oct 2003 04:21:48 -0700, john snipped-for-privacy@hotmail.com (John R) shared the following:

Show him this link:

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-- Travis FOR SALE: '63 VW Camo Baja... $1000 *FIRM*

formatting link
that soak into your ears are whispered, not yelled.

:wq!

Reply to
travis

The tires have a larger diameter, therefore a larger circumference. For each rotation of the tire you will traveling farther. Therefore, for any given speedometer reading, the larger tires will cause you to travel faster than smaller tires would. Tell you neighbor to read his high school geometry and physics books.

Reply to
TJim

I recently put 31x10.5 BFG AT/KOs on my 2002 TJ/X (and they do not rub, no mater how hard I try to get them to). According to my GPS, I travel at 63.8 mph when my speedometer reads 60. The GPS is very accurate when in motion.

Reply to
Fred Garvin

Reply to
L.W.(ßill)

A BIG thank you to all who responded. I'll think of you all as I pull the top on every one of the six "beverages" I'll be getting from the neighbor this evening... ...aaahhhhh. 8^)

John

Reply to
John R

On 9 Oct 2003 02:46:02 -0700, john snipped-for-privacy@hotmail.com (John R) shared the following:

heh heh. Hmmm...

*trying to think up way to get into the same debate with someone here locally so I can make a bet like that with them*

-- Travis FOR SALE: '63 VW Camo Baja... $1000 *FIRM*

formatting link
that soak into your ears are whispered, not yelled.

:wq!

Reply to
travis

Using 'vi' for your message editor, are you? I've become more of an ZZ person than an :wq! user. Fewer keystrokes! Even though I'm actually using Pico for this post.

Bryan

Reply to
The Hurdy Gurdy Man

actually

Reply to
Joe

The ":wq!" is just part of my signature so that other people who are nerds like me can more easily identify the fact that I'm a nerd. ;-)

On Sat, 11 Oct 2003 21:09:17 GMT, "Joe" shared the following:

-- Travis FOR SALE: '63 VW Camo Baja... $1000 *FIRM*

formatting link
that soak into your ears are whispered, not yelled.

:wq!

Reply to
travis

What's bad is when you dubquebang and then set there waiting for Netscape, etc. to do something...

Approximately 10/11/03 14:16, travis uttered for posterity:

Reply to
Lon Stowell

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