tire pressure on tow vehicle
should I increase the rear tire pressure by 10 psi, on my truck's tires or leave at the suggested 35 psi that is shown on the sticker on the door jam?
Forum Discussion
I am stating fact. The other advice is ambiguous, that is unless you know precisely the load in your tow and trailer and know the calculation to get ideal ride vs tow tire pressure AND the weight of your tow vehicle and trailer.
All this is rather subjective, since you are not going to get the precise calculation.
The soundest advice to give is the one from the manufacturer. Air up to maximum pressure. There is a reason why maximum load is achieved at maximum pressure and a reason why it is on the sidewall. Same thing for lowest pressure.
Here is why I recommend highest pressure:
Is it exact science? Nope.
Will you get better wear if you use less than max pressure.
-- Nope, its worse.
Is it possible to not use max pressure?
-- Yep, if you are potentially ready for less than optimal wear.
-- Yep, if you are definitely ready for less than max load cap.
Will a tire explode if you have lower pressure than max.
-- *probably* not.
If you find the ride not tolerable you compromise wear and load to air down.
I tend not to do this.
A vehicle manufacturer's advice is pointless unless it is tire specific. I've had load range e of a tire of same size diff mfg behave drastically different. I'll stick with the tire manufacturer's advice.
Not exactly the same, but definitely related.
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/28249043/gotomsg/28249764.cfm#28249764
All this is rather subjective, since you are not going to get the precise calculation.
The soundest advice to give is the one from the manufacturer. Air up to maximum pressure. There is a reason why maximum load is achieved at maximum pressure and a reason why it is on the sidewall. Same thing for lowest pressure.
Here is why I recommend highest pressure:
Is it exact science? Nope.
Will you get better wear if you use less than max pressure.
-- Nope, its worse.
Is it possible to not use max pressure?
-- Yep, if you are potentially ready for less than optimal wear.
-- Yep, if you are definitely ready for less than max load cap.
Will a tire explode if you have lower pressure than max.
-- *probably* not.
If you find the ride not tolerable you compromise wear and load to air down.
I tend not to do this.
A vehicle manufacturer's advice is pointless unless it is tire specific. I've had load range e of a tire of same size diff mfg behave drastically different. I'll stick with the tire manufacturer's advice.
Not exactly the same, but definitely related.
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/28249043/gotomsg/28249764.cfm#28249764
