Bigger Rims = Speedo Error?
#1
Pole Position
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Join Date: Jul 2012
Location: Kansas
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Bigger Rims = Speedo Error?
I'm Thinkin Of Getting 20" Vossen CV3 Rims.
I Think I Have The 17 Inch Stockies And I Am Wondering If I put 20 Inch Rims On Mt IS250 AWD, Will There Be Any Speedometer Error?
I Think I Have The 17 Inch Stockies And I Am Wondering If I put 20 Inch Rims On Mt IS250 AWD, Will There Be Any Speedometer Error?
#2
#7
Lexus Fanatic
iTrader: (1)
How "off" it is depends not on the wheel diameter but the total diameter of the wheel and tire.
Nobody can give you a real answer without both.
You can compare sizes yourself using a calculator like this one:
http://www.miata.net/garage/tirecalc.html
Nobody can give you a real answer without both.
You can compare sizes yourself using a calculator like this one:
http://www.miata.net/garage/tirecalc.html
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#8
Former Sponsor
Once you go with the recommended tire size that keeps the overall diameter around the same as OEM you will be fine.
Thanks for the link Kurtz!
We recommend
245/30/20 and 285/25/20
Thanks for the link Kurtz!
We recommend
245/30/20 and 285/25/20
#11
#15
just get the wheels you want.. drive past one of the radars they lay out on the streets that show your speed and fig the difference. and you should be going slower then your car says. so you have a little cushion for speeding