I am overthinking this without a doubt, but let's see what y'all say...
The 35" KO2s are listed at 65 lbs and 37" are listed at 69 lbs. For these calculations, I am assuming the wheel weight is the same.
Although 2" diameter is only a 6% increase, the additional penalty comes into play due to larger weight being further outboard from the center of the axle.
If we do the simplest torque required calculations using Fc=mv2/r to arrive at centrifugal force numbers, it comes out that for the same amount of acceleration within the same duration of time, the 37" tires (which actually have 36.5" diameter vs. 34.4" for the 35" tires) requires 18% more torque to be applied compared to the 35" tires.
Another way to look at it, probably, is the 510 ft-lb torque the engine in the raptor will act at wheels as if it only has 418 ft-lb. That is a staggering drop in power, and that's only per wheel, not the impact on all four wheels.
My concern is more on the braking performance than acceleration frankly. I wonder if this means the braking distance will increase at least by 15-20% for the 37" package vs. base.
Although I realize the 37" tires are needed, and in some cases even bigger ones, depending on the driving conditions, but that probably applies to a smaller segment of buyers.
There is good news though: The 37" package only costs about 8.6% more
Thoughts?
The 35" KO2s are listed at 65 lbs and 37" are listed at 69 lbs. For these calculations, I am assuming the wheel weight is the same.
Although 2" diameter is only a 6% increase, the additional penalty comes into play due to larger weight being further outboard from the center of the axle.
If we do the simplest torque required calculations using Fc=mv2/r to arrive at centrifugal force numbers, it comes out that for the same amount of acceleration within the same duration of time, the 37" tires (which actually have 36.5" diameter vs. 34.4" for the 35" tires) requires 18% more torque to be applied compared to the 35" tires.
Another way to look at it, probably, is the 510 ft-lb torque the engine in the raptor will act at wheels as if it only has 418 ft-lb. That is a staggering drop in power, and that's only per wheel, not the impact on all four wheels.
My concern is more on the braking performance than acceleration frankly. I wonder if this means the braking distance will increase at least by 15-20% for the 37" package vs. base.
Although I realize the 37" tires are needed, and in some cases even bigger ones, depending on the driving conditions, but that probably applies to a smaller segment of buyers.
There is good news though: The 37" package only costs about 8.6% more
Thoughts?
