First of all - all Challengers have six tires, but only four are listed. I guess I should assume the two inside tires support the same weight as the outer. Secondly, the coach should be load to traveling weight (full gas, water you carry, clothes, etc). Your front weights are way off. The front axle is rated for max of 8,000 lbs (22,000lb) or 9,000 lbs (24,000lbs). All tires are rated at 5203 lbs @ 120 psi. If you did actually weigh 14,000 lbs on the front your coach is seriously and dangerously overloaded. Just drive over to a CAT scale and weight the coach front and back separately. At least that will give you a starting point for your actual tire pressures. Secondly only to a correct front alignment, correct tire pressure effect the handling, stability and ride comfort of a coach.
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Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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