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Different size rims #47972 Sep 24, 9:46pm Sep 24, 9:46pm
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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

Re: Different size rims [Re: Bartiks] #47973 Sep 24, 9:51pm Sep 24, 9:51pm
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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.

Re: Different size rims [Re: Bartiks] #47974 Sep 24, 9:52pm Sep 24, 9:52pm
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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.

Re: Different size rims [Re: Bartiks] #47975 Sep 24, 9:57pm Sep 24, 9:57pm
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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.

Re: Different size rims [Re: Bartiks] #47976 Sep 24, 9:58pm Sep 24, 9:58pm
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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

Re: Different size rims [Re: Bartiks] #47977 Sep 25, 4:51am Sep 25, 4:51am
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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?

Re: Different size rims [Re: Bartiks] #47978 Sep 25, 12:42pm Sep 25, 12:42pm
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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.

Re: Different size rims [Re: Bartiks] #47979 Sep 25, 2:04pm Sep 25, 2:04pm
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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".

Re: Different size rims [Re: ev3] #47980 Sep 25, 6:06pm Sep 25, 6:06pm
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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

Re: Different size rims [Re: Bartiks] #47981 Sep 25, 8:32pm Sep 25, 8:32pm
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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

Re: Different size rims [Re: Bartiks] #47982 Sep 25, 8:49pm Sep 25, 8:49pm
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yeah that would mean that when the speedo says 60, you're really going like 61. you're fine... thumbsup

Re: Different size rims [Re: Bartiks] #47983 Sep 25, 9:08pm Sep 25, 9:08pm
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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

Re: Different size rims [Re: Bartiks] #47984 Sep 26, 10:48pm Sep 26, 10:48pm
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Originally Posted by Bartiks
ECELICA.COM rules. thumbsup thumbsup thumbsup goodjob goodjob


it does indeed. cheers goodjob

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