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I need new tires for the Lexus and can't find the stock size in a tire I like. I did find the tire I like, but in a slightly larger size.
I am going from 215/45/17 to 225/45/17.
How much will this effect my odometer. I know my speed will be off about 1 mph, but can't find a calculator that will tell me miles.
Thanks
Jim
2000 Black Contour SVT...SOLD
2003 Lexus IS300, Silver, 5 Speed
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CEG\'er
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CEG\'er
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I don't think tire width will affect your speedo.
-Chuck Dienzo
Black 98.5 E1 SVT
#5022 of 6535
Born on March 16, 1998
"If trees could scream, would we be so cavalier about cutting them down? We might, if they screamed all the time, for no good reason."
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Hard-core CEG'er
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225/45/17 is not only wider, but also taller than 215/45/17. Its deceptive because both list the height as 45, but you have to realize that that number is a ratio of the width, and consequently will be taller with a wider tire. You can go to tire rack or any tire manufacturer's website and see the spec for individual tires. It shouldn't affect your speedo more than a 1-2 mph at 60.
1999 Blk/Tan CSVT #654 - SOLD
2003 Suzuki SV650s
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Hard-core CEG\'er
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Someone correct me if I'm wrong here (pertaining to my assumptions of how an odometer works & records mileage)...
215/45/17 diameter - 625.3 mm
225/45/17 diameter - 634.3 mm
*circumferences are of the same proportion
So your odometer should record [(625.3/634.3) x 100] = 98.58 miles for every 100 miles you travel.
Chris G.
~ 98 Mystique LS ATX
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CEG\'er
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Both of the above are reasons why I don't sell tires. 
I didn't know about the whole width/diameter/flux capacitor ratio thing. I always figured 45 is a 45 is a 45. Go figure.
Thanks for the info. 
-Chuck Dienzo
Black 98.5 E1 SVT
#5022 of 6535
Born on March 16, 1998
"If trees could scream, would we be so cavalier about cutting them down? We might, if they screamed all the time, for no good reason."
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Hard-core CEG\'er
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According to the infamous Miata tire size calulator, your size difference is 1.4% too slow. If the indicated speed is 60MPH, actual speed is 60.9MPH. Not like any of our speedos are accurate anyway. But the indicated speed will be lower than actual speed. http://www.miata.net/garage/tirecalc.htmlIt was in the FAQ. Check it out next time.
2000 Contour SE Sport
Originator of the Beowulf Headlight Mod and the Beowulf CAI
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and 225's tend to cause rubbing issues
Luke Pavlick
Sales Representative
ASE Certified Master Tech
For more info on any post
or to place an order please
call 800-428-8355 ext. 362
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www.tirerack.com
I want to die peacefully in my sleep
Like my Grandfather
Not screaming and frightened like
the passengers in his car !!!
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Originally posted by Beowulf:
It was in the FAQ. Check it out next time.
He specifically asked about the ODOMETER. It was in his post. Read it thoroughly next time, all of you 
Chris G.
~ 98 Mystique LS ATX
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Originally posted by Antiramie:
Originally posted by Beowulf:
It was in the FAQ. Check it out next time.
He specifically asked about the ODOMETER. It was in his post. Read it thoroughly next time, all of you
Thank you for reading the entire post....5 stars for you Chris.
I hope your calculations are correct, becuase I'm way over my milage on my lease.
Jim
2000 Black Contour SVT...SOLD
2003 Lexus IS300, Silver, 5 Speed
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I have no life
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I have no life
Joined: May 2002
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Originally posted by Luke@tirerack:
and 225's tend to cause rubbing issues
Even on the lexus?
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
CEG Dragon Run - October 13-15
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