**Will Taller Tires Lower Rpm**. As far as the aero you are probably safe to go +1 up on the tire size. To determine your vehicle’s engine rpm with its present tires, simply measure the diameter with a tape.

In both cases, “336” is simply a constant to convert the tire diameter to the linear distance the tire travels. The lower the ratio the lower the revs per mph, so the better the fuel economy at the significant expense of towing and some acceleration. Provided the taller tires clear everything, will be a f e improvement.

### However, Larger Tires Reduce Acceleration As They Increase Overall Vehicle Mass, Thus Increasing The Vehicle's Inertia (Its Tendency To Stay At Rest Once It Has Stopped).

Provided the taller tires clear everything, will be a f e improvement. 2.5 is about 10% of 26. Assuming you're running about 3000 rpm at 70 mph with the small tires, you'll drop 10% with the big tires.

### Yes Taller Tires Lower Rpm's Which Only Saves Fuel.

As long as the atv has the engine power required to keep up, a bigger tire will increase the bike’s top speed, at least. Bottom end grunt is not a problem. So if you find yourself tires that have a circumference that is 15% taller than you have now, your problem sould be solved.

### People Generally Associate Lower Rmp With Less Fuel Used To Travel The Same Distance.

Just switching from 31 to whatever (33, 35?) is not enough as other factors play a key role as well. Consequently 70% of 185 is taller than 70% of 175. The lower the ratio the lower the revs per mph, so the better the fuel economy at the significant expense of towing and some acceleration.

### Old Tire Diameter/New Tire Diameter Times Rpm At A Given Speed To Know What The New Rpm Will Be.

Assuming you only get to go 1 rpm, the taller tire rolls farther. The common belief is that a tire with a larger diameter will cover more ground per revolution, thus reducing overall gearing and enabling the engine to run at lower revolutions per minute (rpm). The lowest drive ratio available from ford is 3.15 and the highest is 3.73 for this motor.

### To Calculate The Difference In Rpm, It's Really Simple.

Increasing the tire size effectively lowers the ratio. The short answer is, no. That change will definitely alter your gearing and lower your rpms at any given speed.