Originally Posted by
Speedy4x4
Larger tire is heavier and adds rotational weight, like how lighter rims, rotors, driveshaft looses rotational weight can increase mpg and increase power to the wheels.
Originally Posted by
amx1397
Yes,, and as speedy said weight has a factor in it also you want to see your mileage go way up ( 2 to 4 mpg) on the front put two MB spare tires 18" but tall and narrow and on the rear put narrow rims and a 275/50-16= 27" tall, 8.6 wide, on the rear,,, the taller the tire the better the mpg ,and the slower the rpm,, it is like changing you gear ratio just a very small amount. jim
I understand that a weight reduction or increase will impact MPG. But if the only change is tire size, are you both telling me that due to electronics in the XFire, the speedo/odo in the Crossfire will automatically correct itself when either a smaller or taller tire diameter is installed? If it does, I'll buy the argument.
If it is the electronics in the XFire that enables this fact, that's an improvement from when changing tire size directly impacted Speed/Odo accuracy.