16" rims throw speedometer off?
07-24-2005, 02:25 AM
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Originally Posted by brion07
just wanted to know if 16 x 8 rims on my civic hb would throw off my speedometer... 
Although I don't think 16x8" would fit a Civic without fender modifications. I ran 16x7.5" wheels and would rub pretty bad with 205/45x16"
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07-24-2005, 06:35 AM
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I used to have 18" wheels with 215/35R18 tires on mine they only rubbed when you turned the wheel all the way over. I believe they were 7.5" also. Not bad becuase you only needed to turn that much to park.
About the speedometer though, I noticed about a 1 mph difference for every 20mph I drove. For example, at 60mph it was off by 3mph (faster). I measured this by driving alongside my wife's civic, so it's not perfectly accurate, but should give you an idea.
About the speedometer though, I noticed about a 1 mph difference for every 20mph I drove. For example, at 60mph it was off by 3mph (faster). I measured this by driving alongside my wife's civic, so it's not perfectly accurate, but should give you an idea.
07-24-2005, 06:05 PM
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Originally Posted by 18secFerio
my speedometer is off with my 15x6.5 rims on 205/50 rubber. Speedo shows 45, but radar signs show me going 40 
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07-24-2005, 06:58 PM
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found this great site..
http://www.miata.net/garage/tirecalc.html
enter in your stock tire size, and then what your lookin at goin and it gives you a visual comparison (front or side view) and also tells you how much your speedo will be off.
pretty nifty
http://www.miata.net/garage/tirecalc.html
enter in your stock tire size, and then what your lookin at goin and it gives you a visual comparison (front or side view) and also tells you how much your speedo will be off.
pretty nifty
07-26-2005, 04:42 PM
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Originally Posted by CivicSiRacer
205/50x15" is geared a bit lower than stock. But also realize that the speedo on most cars are off by 2-3mph.
alot of cars I've driven at work have fairly accurate speedos, again according to those signs.