I'm going from a 31/10.50/15 all terrain tire to a 245/75/16 highway tread how much differance in milage can I expect ?Will changing tire size and tread pattern help with gas milage?G Man,,,Those 2 are So Close in Diameter that even on paper the Difference is %26quot;none%26quot;.
31/10.50/15 = 30.20%26quot; O.D.
245/75/16 = 30.47%26quot; O.D.
About a 1/4%26quot; Difference in Diameter
Which is less than 1%26quot; in Circumference.
Just for example,,,I ran it across a calculator.
I used a 3.5 Overall Gear Ratio @ 2,500 RPM
The 15%26quot; tire would run at 64.2 mph
The 16%26quot; tire would run at 64.77mph
About a 1/2 MPH Difference around 64~65mph.
No MPG gain from Tire size change,,cuz there's No real change in size.
You MAY get some improvement from the Tread/Design differences.
A/T designs have made much progress over last several years,,,most are surprisingly Efficient these days.
Still,,a GOOD hiway tire will always have less rolling resistance than an Average A/T.
There's a Little extra MPG potential there.
LITTLE is the key word.
If the comparrison was a GOOD A/T vs an Avg HiWay tire,,,it could easily be a wash,,,or the A/T Might even %26quot;win%26quot;.
Point is,,,,with Modern Tires the Differences are THAT close in most cases .
If that's Dissapointing,,,,look at the Bright Side.
You can be confident the new tires wont HURT mileage.
Plus You'll probably have a much nicer ride,quieter,smoother
Take careWill changing tire size and tread pattern help with gas milage?if anything going to a bigger tire will hurt milage, more wieght.Will changing tire size and tread pattern help with gas milage?It won't change much.
A bigger tire can make matters worse. They are heavier and affect the ratios the vehicle was intended for.
A more narrow tire can make a slight improvement.
Proper inflation is more important.
Driving habits account for a lot too.Will changing tire size and tread pattern help with gas milage?With a change like that your speedometer will be so screwed up, how can you tell the difference?
On most tire size changes the difference is so little one can't really tell.Will changing tire size and tread pattern help with gas milage?You can calculate the theoretical difference- a ratio of the two circumferences will show you a very slight decrease in rpm at cruising speed *should* give you a very slight improvement in mileage. Rolling resistance is improved with narrower tires, but again this is hard to calculate beforehand.
I've got big tires on my pickup. On a good fillup, I can get 19 mpg. On bad fillups, it drops to 17. Towing? All bets are off.
Drive easier. If mileage concerns you a lot, think about switching to a different vehicle. The cost of the new wheels and tires may take you a long time to recoup.Will changing tire size and tread pattern help with gas milage?you will get much better gas milage.!!
new tread,bigger tire,=better gas milage.
i envy U....( just kiddin`).
Hope i was of 'Some' help.
deb*Will changing tire size and tread pattern help with gas milage?THE 245/75/16 ACTUALLY IS .1%26quot; LESS IN DIAMETER .So in fact it is only 1/2%26quot; narrower if you do the math like was suggested.There may be a very slight positive difference in fuel mileage due mainly to the 1/2%26quot;.The difference in speedometer will hardly be noticed.
