Does bigger wheels/tires affect MPG?
#1
Does bigger wheels/tires affect MPG?
I bought a used 09 xB the other day. I am looking into new rims/tires.
The purpose of buying this car is for fuel economy. Is there a difference in MPG from stock setup to 18" wheels/tires?
Thanks.
The purpose of buying this car is for fuel economy. Is there a difference in MPG from stock setup to 18" wheels/tires?
Thanks.
#4
You don't need to. Accuracy of the speedo/odo is based on the outside diameter of the tires, and has nothing to do with wheel size.
OEM 205/55-16 tires calculate to 24.9" diameter.
215/40-18 = 24.8" diameter.
225/40-18 = 25.1" diameter.
To see the effect of different wheel & tire sizes versus OEM, use this calculator:
http://www.rimsntires.com/specs.jsp
Keep in mind that the stock wheels are 16"x6.5" with +45 offset, and the tires are 205/55x16". Have fun playing with the calculator/comparer.
OEM 205/55-16 tires calculate to 24.9" diameter.
215/40-18 = 24.8" diameter.
225/40-18 = 25.1" diameter.
To see the effect of different wheel & tire sizes versus OEM, use this calculator:
http://www.rimsntires.com/specs.jsp
Keep in mind that the stock wheels are 16"x6.5" with +45 offset, and the tires are 205/55x16". Have fun playing with the calculator/comparer.
#7
#8
For fuel economy the best wheels/tires would be the oem 16" alloys with oem size tires. In addition to the extra weight with larger wheels, wider tires also hurt fuel economy by increasing rolling resistance and aerodynamic drag.
#9
#10
As close as I can tell an oem 16" steelie weighs 21-22lbs + 20lbs for the oem Goodyear tire. The oem 16" alloy weighs ~18lbs. I have a set of oem 16" alloys with oem Goodyears in my basement and they weigh ~37lbs each on a very questionable bathroom scale. Best I can offer...
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BlingSlade
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10-19-2016 12:39 AM