Originally posted by airedale:
This brings up a question I've had for years about tire pressure. Is the pressure specific for a car NO MATTER the tire? It seems to me that with all the changing we do with tires, both sizing and style, that the best pressure would change also. Is there a scientific way of deciding which pressure works best for one particular situation?
Originally posted by Slingshot:
Important to note the 33F/40R is "cold" tire inflation pressure. If you inflate right after a ride, your 40 pounds in the summer time will cool off to less than 35 pounds by the morning.
Originally posted by nsxtasy:
..........
The other is the change in ambient temperature during the course of the day. Tire Rack says that a rule of thumb that you can use to set your pressure is a difference of one psi for each 10 degrees F.
Originally posted by Hrant:
OK, what is the ambient temp for the benchmark 33/40 ......... and I am assuming at sea leve right?
Originally posted by nsxtasy:
No, it's the ambient temperature and altitude where you do your driving. If you normally drive during the daytime at 600 ft ASL, then measure it at (or adjust to) whatever your daytime temperatures are, at about the same altitude.
Originally posted by nsxtasy:
It's 33F/40R for all years '91-01. I'm not sure about the '02.
Originally posted by Sensei:
The automobile manufacturer recomendation is not a good place to start.
Originally posted by nsxtasy:
Wrong, wrong, wrong. The maximum pressure on the tire's sidewall is NOT a recommended tire and is only the capacity of the tire.
Uhhh...I didn't say to use the the maximum. Go back and read it again.
Yes, underinflated tires are dangerous, but a tire that is inflated to the vehicle manufacturer's recommendation is not underinflated. Even though a tire may be capable of being operated when inflated to 50 psi, using it at its maximum inflation will cause uneven tire wear and poor handling and ride quality.
Have you ever experienced 215/40/17 Pirelli P-Zero with only 33psi. You can say whatever you want but that would be under inflated to me. Underinflated tires will also cause uneven tire wear and poor handling and poor(er) ride quality.I guess we're at a deadlock...oh well.
Telling people to inflate it that high is just plain bad advice.
And just how high did I say...I think you need to take a step back. I don't want to make this a bigger deal than it already is. I think everyone should just use common sense.
Saiyonara,
Choritsu-shi
Originally posted by Sensei:
Uhhh...I didn't say to use the the maximum. Go back and read it again.
Originally posted by Sensei:
Have you ever experienced 215/40/17 Pirelli P-Zero with only 33psi. You can say whatever you want but that would be under inflated to me.
Originally posted by Sensei:
I think everyone should just use common sense.