Check tire pressure (cold) on all tires + spare
Under-inflation is the number-one cause of trailer-tire failure: a soft tire builds heat at highway speed until the casing lets go. Airstream's schedule lists a cold tire-pressure check at the most frequent interval (every 1,000 mi / 60 days) and tells you to check before every trip. Set to the pressure on the tire placard / data plate, not the number molded on the sidewall (that's the max). Don't forget the spare — it's no help at the right moment if it's flat.
With tires cold (parked 3+ hours and driven less than ~1 mi), set every tire including the spare to the placard PSI; never bleed pressure from a hot tire. A blowout-prevention TPMS that watches pressure and temperature while you tow is the most-recommended tire upgrade.
Applies to All Airstream travel trailers
Free to do yourself. The only outlay is a one-time quality tire gauge (~$10–30) and a 12V inflator if you don’t have one; a TPMS automates the check. No reason to pay a shop. est. source