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Joined: Aug 2003
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Bartiks
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2000 carbon blue Toyota Celica GT
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Indiana
Sep 24, 10:46pm - #47972 
Different size rims

Hi all I have a question. I think I already know the answer but I would just like to make sure. I recently went from a 15 to a 16" rim. I know not that much of a difference but I got it for cheap. I want to know will this affect my spedometer reading or will it reconfigure itself to the correct speed. Please let me know whaty ou think. thumbsup thumbsup

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silver
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California
Sep 24, 10:51pm - #47973 
unless you changed the overall size of the wheel and tire a lot, it will only be off by a little bit (probably about 2-3mph). but i could be totally wrong, so someone back me up. also, you could search for a wheel speedo calculator thingy and it will tell you how far off it is.

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Bartiks
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Indiana
Sep 24, 10:52pm - #47974 
Yea that is kind of what I was thinking as well. I just didn't want to be a freaking retread whenever it came to this. Thanks for your reply though.

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spaztikid
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1974 Toyota Celica

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LA
Sep 24, 10:57pm - #47975 
it wont be off by anyhting...if your that worried about it you can get someone with a diagnostic plug in to set your wheel size.

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Bartiks
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Indiana
Sep 24, 10:58pm - #47976 
I'm not really worried about it I just thought that I might be off a little being a new size rim but thanks for the input though. thumbsup

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ev3
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ev3

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Australia
Sep 25, 5:51am - #47977 
hmm...wasnt aware of this problem actually...im probably gonna go for a bigger change...from 16s to 19s. How much of an issue will that be?

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Gen7fan
ThE iRoN mAiDeN
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2003 silver streak Toyota Celica GT
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2003 Toyota Celica GT

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Maryland
Sep 25, 1:42pm - #47978 
If your wheel and tire size (the combo) is larger or smaller than stock (24.1", I think) the your speed will read slower or faster than it should.

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cooltoy2000
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Sep 25, 3:04pm - #47979 
If you stick with the stock tire size for the 16" rim (20/50/16) you will only be off by 0.4% from your stock 15".

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silver
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California
Sep 25, 7:06pm - #47980 
Originally Posted by ev3
hmm...wasnt aware of this problem actually...im probably gonna go for a bigger change...from 16s to 19s. How much of an issue will that be?


the speedo will only be off if the overall diameter of the wheel and tire is quite a bit bigger than stock. its really only a problem for things like hondas that have stock 15" wheels and then the ricer owner throws some bling bling 20s on. if you abosolutely have to know how far off it will make it be, sue the calculator on the link. it will set you straight thumbsup thumbsup

http://www.mr2.com/FORMS/tire.html

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Bartiks
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Indiana
Sep 25, 9:32pm - #47981 
Nice link silver. It states that i'm only off by like .9238479837% or some small number like that. But thanks for all the replies though.
Bartiks

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silver
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California
Sep 25, 9:49pm - #47982 
yeah that would mean that when the speedo says 60, you're really going like 61. you're fine... thumbsup

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Bartiks
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Indiana
Sep 25, 10:08pm - #47983 
Oh well like 1 more mile per hour is gonna hurt me. ECELICA.COM rules. Thanks for all of the posts guys. thumbsup thumbsup thumbsup goodjob goodjob

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silver
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California
Sep 26, 11:48pm - #47984 
Originally Posted by Bartiks
ECELICA.COM rules. thumbsup thumbsup thumbsup goodjob goodjob


it does indeed. cheers goodjob

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