We can't explain what happened but we can ask what the other problems were and use that information to maybe help you adjust your driving style.
I've never measured width. If builder says 88" and it's really 101" I will only care if I know the garage door width in advance. I can guarantee the coach is under legal width and that 10,000,000 people do just fine with max width vehicles. If I'm one of the 5 out of 10,000,000 with a problem, I should be off the road.
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