Allegro Bay Owner's Manual - Tiffin Motorhomes

Frequency of Checking Tire Inflation PressuresROUTINE MAINTENANCEWhen one has determined the “correct” tire inflation pressures for each of the motor-home tires (as afunction of the “fully loaded” condition, of course) and inflated the tires under “cold” (i.e., tires haven’tbeen driven for more than one mile) conditions; then the air pressures in the tires should be periodicallychecked to make sure that they retain their proper pressures.It is recommended that tire pressures be checked at least once a month (every two weeks would be better)and before any major trip. On long trips, the tires should be checked every “drive” morning. On shorttrips (a day or less), the tires should be checked before one departs on the trip and again before onereturns home.Check tire pressures when they are “cold”; that is, the tires haven’t been driven at all or, at most, less thanone mile before being measured. In this manner, the tire pressure has not been increased by the heatingassociated with both tire sidewall and tread flexure associated with traveling. If one must check tires thatare warm or hot, remember that they will necessarily read higher than normal.Do not “bleed” these tires down to the “cold pressure” readings, as they will probably then beunderinflated when they are actually cool. Don’t make any adjustments to tire pressures when the tires arewarm or hot, if such can be avoided.To make these tire-pressure measurements, it is recommended that one purchase a quality, truck-tire airgauge which has an angled dual head. This type of gauge allows one to check inflation pressures of boththe inner dual wheel which has the valve stem pointing towards one and on the outer wheel which has thevalve stem pointing away from one. Pressure-sealing valve caps should always be used to protect thevalve stems and prevent air from escaping from the valve stems.Tire Wear, Balance, and Wheel AlignmentIn addition to tire inflation considerations, the tires should also be periodically examined for other types ofnormal “wear and tear.” If installed and maintained properly, all tires mounted on the motor homeshould wear in a smooth, even pattern. If the tires begin to show irregular wear patterns and the motorhomealignment is still correct, then sometimes just rotating the tires by changing wheel position androtation of the tires will allow the tires to wear evenly.Check with the chassis manufacturer (Ford or Workhorse) and its literature (in the Owner’s InformationPackage) for particulars on maintaining proper wheel alignment. Tire rotation should include the sparetire (optional on some models) in the rotation pattern and changing the direction of rotation of the tires.Tires can be rotated front-to-rear and side-to-side.Tire CleaningProper cleaning of the tires will assure maximum years of service. A soft brush and the normal mild soapshould be used to clean the tires. Use care in applying any tire “dressing” product as these containpetroleum derivatives, alcohol, or silicones which may cause deterioration of the rubber, possibly leading14-27