Mileage decreased
#1
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Join Date: Feb 2001
Location: San Francisco, CA
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Mileage decreased
Recently replaced 215/60/16 all season touring tires with 225/55/16 ultra high performance summer tires and lost about a mile per gallon. Is it how it supposed to be?
Last edited by joedoe; 04-09-03 at 12:29 PM.
#3
I recently went from stock 225/55-16s to 235/45-17 fronts and 255/45-17 rears on my SC4, and my gas mileage has dropped substantially - from about 23 highway to about 20, or about 10%. Much larger contact patch, more rolling resistance, it only makes sense that you lose efficiency when you gain traction and handling. I have a long road trip coming up later this month, will get a better idea of highway mileage, will post the numbers when I get back -
Last edited by strongsail; 04-10-03 at 11:24 PM.
#4
Lexus Champion
Originally posted by strongsail
Much larger contact patch, more rolling resistance, it only makes sense you lose efficiency when you gain traction and handling.
Much larger contact patch, more rolling resistance, it only makes sense you lose efficiency when you gain traction and handling.
#6
Lexus Test Driver
Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
215/60-16 5.1in 13.1in 26.2in 82.2in 771 0.0%
225/55-16 4.9in 12.9in 25.7in 80.9in 783 -1.6%
The new tires are slightly smaller in outside diameter, not sure of the effects on gearing and speedometer.
215/60-16 5.1in 13.1in 26.2in 82.2in 771 0.0%
225/55-16 4.9in 12.9in 25.7in 80.9in 783 -1.6%
The new tires are slightly smaller in outside diameter, not sure of the effects on gearing and speedometer.
#7
if the new tires are slightly smaller, hence more revs/mile, speedo and odo will be off a bit, that's true too.
So, will I go back to perching on my oem wagon wheels to get better mileage?
Not likely
So, will I go back to perching on my oem wagon wheels to get better mileage?
Not likely
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#9
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Originally posted by joedoe
Yeah, actually speedometer and odometer are 1.7% off now.
Yeah, actually speedometer and odometer are 1.7% off now.
As far as mpg, ya gotta pay to play.
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