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Wow Marc, hope everything was ok.
It is now... a little scary there. Nothing like smoke coming out of the hood to get your attention.
I hope it was just smoke from the belt.
Found out that 315-75x16 Nitto TGs at ZERO PSI
Found out that 315-75x16 Nitto TGs at ZERO PSI - what happen?
Marc's tires weren't flexing at 10 psi and after playing with them ended up going to zero to get about the same flex (or less actually) as I did at 10psi on the 40.
He was saying that 35s in an 8 ply are too stiff of a sidewall for that light of a truck . He mentioned that he is thinking of going to 17's so he can drop to a 6 ply which are more flexible. After seeing his results, I agree!
Yes. I was really surprised to try the 2x2 air-down test. At zero PSI the tire is almost an inch off the ground (in the rear). So I decided to just let all the air out once on the trail. Since these tires are load range D and are rated to carry 3500 ponds at 50 PSI (oddly, Nitto doesn't list a weight carrying capacity at zero PSI) and my entire truck weighs just 3300 or so with no top, it's not surprising. Those sidewalls are surprisingly stiff. So, a tire / wheel change is probably in the future.
Curiosity has the best of me. Care to explain this test?Wow shows why the sidewalls are so tuff on the Nittos
Note - I have refined the air down test to a measured 1.25 x 1.25 I have found a 2x2 (measured 1.625 x 1.625 was to big for an average)
Curiosity has the best of me. Care to explain this test?
Aw now it makes sense. Thank youIt's Phil's idea, but basically you jack up one wheel. Place a 2x2 (not sure if that's "dimensional lumber" size actually a 1.5" x 1.5" so I used a 1x2 on top which totalled a real 2"). Lower the tire onto the 2x2. Start letting air out. When the tire touches the ground on both sides of the 2x2, that's your optimum trail pressure.
When I did this, I had almost an inch of daylight between the ground and the tire. I went ahead and pulled the valve stem core. ZERO PSI.
That's on the back, I didn't test the front.
@LandCruiserPhil Please correct me if I'm wrong or feel free to chime in.
EDIT... I just noticed Phil's post above. I'll have to re-run this test and see what happens.