You are so right, tire pressure is huge--even on your cars you should look for recommended pressure on the drivers door, and never ever rely solely on the tire pressure listed on the tires sidewall. As a Class A owner with no manufacturer supplied spare, your tire pressure is even more crucial. I use Tire Minder to monitor my tire pressures and temps. At 110 lbs you were cruising for a sidewall blow out if you were fully loaded and driving for a distance here in the Florida heat. Glad you rectified the problem. We had the tires set to 82 from the get go.
There are some threads here on weighing the coach and calculating tire pressure per tire for your load distribution. Interesting reading.
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