Pre-Trip Inspection: Cost, Hours and Process in Hacienda Heights

RV tires almost never wear out. They age out. The rubber degrades from UV, ozone and heat cycling while the coach sits, and the failure mode is a sidewall letting go at highway speed rather than a slow leak. A tire with full tread and a date code from seven years ago is a tire with full tread that is about to fail.

So the tire portion of the inspection is date codes first, then condition, then pressure set to the actual load rather than to the number on the sidewall. Most coaches we see are running pressures set from the sidewall maximum, which on a lightly loaded axle produces a harsh ride and uneven wear, and on a heavily loaded one is not enough. Getting that right requires knowing the axle weights, which is why we ask for a scale ticket.

Wheel torque is checked at the same time, particularly on towables and on any coach that has had a tire off recently. Lug torque loss after a wheel service is a known failure pattern and it is checked in thirty seconds.

• Date codes read on every tire including the spare
• Condition inspection for sidewall crazing, flat spotting and irregular wear
• Pressures set to actual axle load rather than to sidewall maximum
• Wheel torque checked, especially after any recent tire service
• Valve stems, extenders and monitoring sensors inspected for leakage

Slides come next because a slide that will not retract ends a trip on the spot. Each room is run fully both directions, the travel is watched for binding and uneven timing, seals are inspected, and the mechanism is checked. Awnings are run out and in and the fabric and arms inspected, because an awning that fails extended in wind takes sidewall with it.

Then LP, which gets a leak test and a regulator and lock off check. Then power: shore cord and connector condition, transfer switch, converter output, battery load test, inverter function and a generator start and run under load. Lights and signals are checked all the way around including the connector on a towable, which is the single most common source of intermittent trailer lighting faults.

Water system gets pressurized and run, tanks and dump valves are checked, and the water heater is confirmed on both energy sources. Levelling jacks are cycled and checked for creep and leakage. On a towable the coupler, safety chains, breakaway cable, and weight distribution and sway control hardware are inspected, and we will talk through tongue weight and loading if the combination has never been weighed.

It is not a DOT inspection and it does not produce a compliance certificate. It is a condition inspection that produces a written report, which is a different thing, and any shop offering you the former on a private RV should be asked what exactly they think they are certifying.

It is also not a service. If the inspection finds a slide motor drawing high current, a converter with low output or a tire that has to be replaced, those are quoted separately and you authorize each one. Booking a pre trip appointment two days before departure and expecting the repairs to fit inside it is the most common scheduling mistake owners make. Two to three weeks ahead is the useful window, because it leaves room for parts.

And once you are on the road, we cannot help you there. We do not provide roadside or mobile assistance, and no amount of goodwill changes that. The entire purpose of this appointment is to make that limitation irrelevant.