I hate fiberglass and fender flares, and hate how Raptors sit stock, so IMO, they need wheels/tires that stick out a lot more than stock to fill those giant wheel wells. But 38x15.5s are too much on a truck that's got like 3" of lift. 20x12 on 37x13.5s would be a lot better.
And $65k is insane for 3+ years old and 31k miles. He has maybe $10k in upgrades, so dollar-for-dollar, $65k is almost what it would cost for a 2014 Raptor and those upgrades.