White Eagle
Well-Known Member
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- #1
Found my sweet spot at 25lbs. Controversial, most likely, but facts are facts.
2025 Gladiator Rubicon Stock Falken AT which are heavy per size comparatively.
Today‘s average temp 74 degrees
I lowered my TP to 25lbs, absolutely no deviation in height, no bottom bulge change, not really a bulge at all with TP drop which tells me C rated are still to stiff !
300lbs in bed
Speeds up to 70mph.
Again, going into my ranch is a SOB with rock, limestone and flint. My tires average 11K life expectancy before ate up.
My time from highway to ranch gate was improved by 16 minutes which is a substantial increase in speed AND COMFORT !
Highway speeds only increased pressure by 2lbs to 27lbs Evenly from front to back proving conclusively no increase in heat because of lower TP.
Gas milage for the whole route 17.8. Absolutely no change on this route from 37lbs TP. That is 17.8mpg at 27lbs which means the tire is holding much of the same shape at 27 as 37.
I conclude 37lb factory pressure is ridiculous for lightly loaded Gladiator and that load range C is too damn stiff.
My route on pavement has bad curves and such (Texas Twisted Sisters) and there was no significant degradation in cornering and I drive it like a sports car.
It really begs the question with C rated tires how low could you go before enough tire damaging heat would be created ? Lets say you went down to 22lbs for daily driving, the heat would only build up enough to create a little extra pressure where it would stabilize.
My tire pressure today increased at an even rate, any load would cause the rear to increase in pressure over the front.
I like a little weight in the bed to preload the springs for a smoother ride. For me 25lbs seems to work in harmony with the springs and shocks on my super rough road with no negative effect on pavement driving to 70mph.
2025 Gladiator Rubicon Stock Falken AT which are heavy per size comparatively.
Today‘s average temp 74 degrees
I lowered my TP to 25lbs, absolutely no deviation in height, no bottom bulge change, not really a bulge at all with TP drop which tells me C rated are still to stiff !
300lbs in bed
Speeds up to 70mph.
Again, going into my ranch is a SOB with rock, limestone and flint. My tires average 11K life expectancy before ate up.
My time from highway to ranch gate was improved by 16 minutes which is a substantial increase in speed AND COMFORT !
Highway speeds only increased pressure by 2lbs to 27lbs Evenly from front to back proving conclusively no increase in heat because of lower TP.
Gas milage for the whole route 17.8. Absolutely no change on this route from 37lbs TP. That is 17.8mpg at 27lbs which means the tire is holding much of the same shape at 27 as 37.
I conclude 37lb factory pressure is ridiculous for lightly loaded Gladiator and that load range C is too damn stiff.
My route on pavement has bad curves and such (Texas Twisted Sisters) and there was no significant degradation in cornering and I drive it like a sports car.
It really begs the question with C rated tires how low could you go before enough tire damaging heat would be created ? Lets say you went down to 22lbs for daily driving, the heat would only build up enough to create a little extra pressure where it would stabilize.
My tire pressure today increased at an even rate, any load would cause the rear to increase in pressure over the front.
I like a little weight in the bed to preload the springs for a smoother ride. For me 25lbs seems to work in harmony with the springs and shocks on my super rough road with no negative effect on pavement driving to 70mph.
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