Tire Care; Air Pressure - Thor Motor Coach tuscany 2013 Owner's Manual

The most important factor in maximizing the life of your tires is maintaining proper
inflation pressure. An under inflated tire will build up excessive heat that may go beyond
the prescribed limits of endurance of the rubber and the radial cords. Over inflation
will reduce the tire's footprint on the road, reducing the traction, braking capacity, and
handling of your vehicle. An over inflated tire will also cause a harsh ride and uneven
tire wear.
To determine the correct air pressure for your tires, load your motorhome as you would
normally for travel, including water and fuel. Determine the correct air pressure for the
weight on each axle and adjust the pressure according to the Federal Certification Label
when the tires are cool or have not been driven for more than one mile. Never reduce
the air pressure in a hot tire.
Never let air out of a hot tire.
Now that you have found what the correct air pressure per axle needs to be for your
motorhome when loaded, you need to know when to check your air pressure. You should
check the air pressure every two weeks or at least once a month and before any major
trip. Your motorhome's air pressure should be checked every morning on long trips.
On short trips of a day or less of driving each way, your tires should be checked before
you start your trip home. If your vehicle is stored for any length of time, the air pressure
should be checked prior to storage, but more importantly, when it comes out of storage.
Check your tires when they are "cold" and have not been driven for more than one mile.
The stated load capacity for a given cold inflation pressure is based on ambient outside
temperature.
To maintain the inflation pressure in your tires you will need the proper equipment. It is
recommended that you purchase a quality truck tire air gauge, which has an angled dual
head. This type of gauge allows you to check inflation on the inner dual wheel which has
the valve stem pointed away from you. Nothing should restrict your ability to check your
tire's air pressure daily when you are driving your motorhome. Pressure sealing valve
caps should always be used to prevent air from escaping from the valve stem. If you
use valve stem extension hoses, make sure they are good quality stainless steel braid
reinforced, and are securely anchored to the outer wheel. If your motorhome has wheel
covers which must be removed to check the inflation, then consider removing them as
the extra time and effort required may lead you to avoid checking your pressure.
When replacing your tires always make sure the proper size
and rating is used. Check the federal certificate located in
the drivers area for your model's specific size and rating.
In a sudden stop or collision, loose equipment could strike someone. Storing
a jack, a tire, or other equipment in the passenger compartment of the
vehicle could cause injury. Store and secure all of these items in a proper
place.
Thor Motor Coach does not provide jacks with our motorhomes.
Chapter 3 - On the Road Safety

TIRE CARE

CHECK AIR
PRESSURE
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