Brandt H550 Series, Owner'S Manual

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Heavy Haul Trailers
Caution. Repair any leaks immediately. All tire must be equipped with valve caps.
4.9.3.1 Tire Over-Inflation
Over-inflation weakens the cord body of the tire by reducing its ability to absorb road shocks.
Over-inflation can cause failure due to fatigue cracks.
Over-inflation can also cause rim and wheel damage.
1.
Inflate to correct pressure when tires are cool.
2.
Never "bleed" tires to relieve excessive pressure buildup when the tires are warm. Excessive
buildup of air pressure can be due to load, under-inflation, speed or a combination of the three.
4.9.3.2 Tire Under-Inflation
Under-inflation causes rapid wear and premature failure.
Under-inflation or overloading of the tires on any vehicle driven at sustained speeds will result in
weakening of the tire cords. This can make the tire susceptible to further damage or failure even
under normal load and inflation conditions.
4.9.3.3 Steps for Maintaining Proper Tire Pressure
1.
Locate the recommended tire pressure on the vehicle's tire information placard, certification
label, or in the owner's manual.
2.
Record the tire pressure of all tires.
3.
If the tire pressure is too high in any of the tires, slowly release air by gently pressing on the tire
valve core with the edge of your tire gauge until you get to the correct pressure.
4.
If the tire pressure is too low, note the difference between the measured tire pressure and the
correct tire pressure. These "missing" pounds of pressure are what you will need to add.
Note: It is acceptable to top up nitrogen filled tires with clean and dry compressed air.
5.
At a service station, add the missing pounds of air pressure to each tire that is under-inflated.
6.
Check all the tires to make sure they have the same air pressure (except in cases in which the front
and rear tires are supposed to have different amounts of pressure).
If you have been driving your vehicle and think that a tire is under-inflated, fill it to the recommended
cold inflation pressure indicated on your vehicle's tire information placard or certification label. While
your tire may still be slightly under-inflated due to the extra pounds of pressure in the warm tire, it is
safer to drive with air pressure that is slightly lower than the vehicle manufacturer's recommended
cold inflation pressure than to drive with a significantly under-inflated tire. Since this is a temporary
fix, don't forget to recheck and adjust the tire's pressure when you can obtain a cold reading.