Tire Size and Gas Mileage
#1
Tire Size and Gas Mileage
Hi,
I finally took the plunge on my F56 and went from 175/65/15 to 195/55/16.
I've been using an app for the longest time to track mileage and was averaging around 15 kpl on the 15s. Depending on driving and traffic, I would get anywhere from 13 to 16 kpl.
Now, after 3 tanks on the 16s, I'm getting about 13.5 kpl.
Is this normal or should I wait for a larger sample?
Thanks.
I finally took the plunge on my F56 and went from 175/65/15 to 195/55/16.
I've been using an app for the longest time to track mileage and was averaging around 15 kpl on the 15s. Depending on driving and traffic, I would get anywhere from 13 to 16 kpl.
Now, after 3 tanks on the 16s, I'm getting about 13.5 kpl.
Is this normal or should I wait for a larger sample?
Thanks.
#3
One factor of consumption is tire diameter. A larger diameter tire will cause your engine to turn fewer RPMs at a given speed which mean you go farther n a unit of fuel....a smaller diameter tire turn faster meaning you buzz your motor faster at the same given speed. More engine RPM = poorer mileage. Your wheel size got bigger but you went to a lower profile tire. You can find a chart on line that will tell you if you gained or lost overall diameter.
#7
There are several tire size to odometer variable calculators available on line. Here's just one.
https://tiresize.com/calculator/
And, if you need more conversion problem solving, here's a whole list of automotive stuff.
http://www.csgnetwork.com/automotiveconverters.html
https://tiresize.com/calculator/
And, if you need more conversion problem solving, here's a whole list of automotive stuff.
http://www.csgnetwork.com/automotiveconverters.html
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#8
A taller tire will effectively decrease your final drive ratio which will aid with mileage, but....
- If it's heavier, it will decrease mileage, and harm your going, stopping, and turning.
- If it's wider, it will decrease mileage due to frictional and aerodynamic losses. It's probably also heavier.
I just went to a slightly taller, wider tire, on a lighter wheel. I'm hoping the additional height, width, and drag are offset by the lighter weight.
- If it's heavier, it will decrease mileage, and harm your going, stopping, and turning.
- If it's wider, it will decrease mileage due to frictional and aerodynamic losses. It's probably also heavier.
I just went to a slightly taller, wider tire, on a lighter wheel. I'm hoping the additional height, width, and drag are offset by the lighter weight.