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Thread: Tire pressure
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Old 11-14-2019, 08:37 PM   #33
Quattro
Junior Member
 
Brand: Still Looking
State: South Carolina
Posts: 5
THOR #17179
Quote:
Originally Posted by Chance View Post
As you say, “no less than”, which can leave enough margin so you don’t have to readjust for cold-weather deflation if you don’t want to.

As an example, let’s take the OP, who has tires rated at up to 120 PSI, yet the chassis only requires 82 PSI when fully loaded to maximum chassis/axle loads.

If he sets tires at ~ 90 ~ 95 PSI in warm Florida, he shouldn’t have to adjust just because it gets colder (short of North Pole). Because there is a lot of difference between the required 82 PSI and the maximum 120 PSI tire rating, he doesn’t have to worry as much as guys driving around in overloaded motorhomes and where tires are at maximum pressure. Those are the guys that seem to report tire failures most often.
Correct! The failure mode for an overinflated tire is generally not as catastrophic as an underinflated tire. You do make yourself a bit more susceptible to impact damage, but if you see that you have hit something and pull over, you will probably be ok. Yes, there is a lot more reserve capacity in 245/70R19.5 tires on an 18k chassis than on 315/80R22.5 tires on a 71k chassis.
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