Load Carrying Capacity - Four winns SL series Owner's Manual

When weather temperature changes occur, tire infla-
tion pressures also change. A 10º F (6º C) tempera-
ture drop can cause a corresponding drop of 1 psi
(7 kPa) in inflation pressure.
Under-inflation is the most common cause
of tire failures and may result in severe tire
cracking, tread separation or "blowout", with
unexpected loss of vehicle control and in-
creased risk of injury. Under-inflation increases
sidewall flexing and rolling resistance, resulting
in heat buildup and internal damage to the tire.
It also may result in unnecessary tire stress,
irregular wear, loss of vehicle control and ac-
cidents. A tire can lose up to half its air pres-
sure and not appear flat!
To check the pressure in your tire(s):
1: Check your tire(s) when they are "cold". The term
cold does not relate to the outside temperature.
Rather, a cold tire is one that has not been driven
for at least three hours. When you drive, your tires
get warmer, causing the air pressure to increase.
Therefore, to get an accurate tire pressure read-
ing, you must measure the tire pressure when the
tires are cold or compensate for the extra pres-
sure in warm tires.
2: Remove the cap from the valve on one tire, then
firmly press the tire gauge onto the valve and
measure the pressure with the tire gauge.
3: Add (or remove) enough air to reach the recom-
mended air pressure indicated on your Certifica-
tion Label and or Tire Label. See Figures S23-
S25.
Figure S25: Sample Tire Label
4: Replace the valve cap.
Trailer Information - Section S
NOTICE:
5: Repeat this procedure for each tire, including the
spare.
Tire Care:
Periodically inspect the tire treads for uneven or
excessive wear and remove objects such as stones,
nails, or glass that may be wedged in the tire
grooves. Check for holes or cuts that may permit air
leakage from the tire and make necessary repairs.
Also inspect the tire sidewalls for cracking, cuts,
bulges, and other signs of damage or excessive
wear. If internal damage to the tire is suspected,
have the tire removed and inspected in case it needs
to be repaired or replaced. For your safety, tires
that are damaged or show signs of excessive wear
should not be used because they are more likely to
blow out or fail. Improper or inadequate trailer main-
tenance can cause tires to wear abnormally. Inspect
your tires, including the spare frequently, and replace
them if one or more show signs of damage or exces-
sive wear.
NOTICE:
Tires degrade over time, even when they are
not being used. It is recommended the tires
generally be replaced after 6 years of normal
service. Heat caused by hot climates or fre-
quent high loading conditions can accelerate
the aging process. You should replace the
spare tire when you replace the other tires
due to the aging of the spare tire.
D. Load Carrying Capacity
The certification label shows the maximum load-car-
rying capacity and is located on the port forward side
of the trailer. See Figure S24.
GVWR is the Gross Vehicle Weight Rating. It is the
total combined weight of the trailer and its maximum
load-carrying capacity. DO NOT exceed the GVWR
rating for the trailer.
Total Load is the maximum load-carrying capacity of
the trailer minus the weight of the trailer.
Locate the statement "Total load should never ex-
ceed XXX kg or XXX lbs." on your trailers tire label
located on the port forward side of your trailer.
AGE
Owner's Manual Page 148