The speedometer in a car runs based off the speed of the transmission. The gears in the transmission spin at a known rate for the speed the vehicle is traveling at. The faster the gears spin the more the speedometer goes up. If a person replaces stock tires with larger tires, then the tires will spin slower, which will cause the speedometer to read at a value that is less than the actual speed.
smaller cross-section of tread in contact with road
If the outside diameter of the new wheel (tire) is smaller then the tire will have to make more revolutions to equal what the manufacturer calibrated the spedometer to. The result would be your vehicle reading higher than actual speed. The solution it to make sure the vehicle is recalibrated to the new diameter. Sometimes this is as simple as a gear change in the transmission (external)
so that less friction is caused, and to improve speed
less than the data transfer rate.
Airplanes designed for speed have smaller wings to reduce drag and increase performance. Smaller wings create less lift, allowing the plane to move faster through the air with less resistance. Additionally, smaller wings help to decrease the overall weight of the aircraft, further enhancing its speed capabilities.
The larger tires would actually go slower, as you would have less revolutions over a distance than the smaller tires. As far the performance of the vehicle, theoretically, if the rear end gears remained the same, the car would have a higher overall top speed with the larger tires... however, that's before you factor in the higher drag coefficient, decreased power-to-weight ratio caused by the heavier wheels and tires, and also where the engine's power band is.
That is a STARTLING reduction in mileage! Check the tire specification data plate on the inside drivers door jamb and make sure you have the correct size tires. If the new ones are smaller in circumference than the originals you would definitely lose mileage, but also your speedometer would be reading wrong also (smaller tire size = more RPMS = higher engine speed to maintain the same speed as previously).
Compact tractors are smaller, they take up less space, they use less gas, have smaller tires, but they also cut less grass at once, and are easier to flip on hills. They are also more expensive, but I hear they are better for the enviroment as well.
Because the size of the objects determine the speed and force of the object, the smaller the object, the higher the speed and the less force is applied whereas a larger object will apply more force and less speed.
less than the data transfer rate
You will get the best gas mileage if you get the tires that fit your car that have the least rolling resistance. Rolling resistance is the amount of force needed to keep an object rolling at a constant speed. Heavier tires and those with deeper treads are less efficient. Remember to properly inflate your tires too.