If there are cracks in sidewalls of tires, have them inspected at a reputable tire shop. If rig was kept in a garage, there may be no sidewall cracks. Tires that are not driven frequently and exposed to a sun can develop sidewall cracks that can cause tire failure with damage to underside plumbing, holding tanks and wiring and possible loss of control. I have had tires fail on hot days driving on cupped concrete highway surfaces, expensive, disruptive and dangerous. BTW have brakes checked and brake fluid replaced if not done recently. Brake fluid collects water over time and leads to brake fade on grades.
