Once a few years ago I was audited.
I asked the auditor if there was any reason that I was picked for an audit. He told me that since I was self-employed running a business from my home - that raised my risk of audit to 75-80% change I would be audited each year.
Claiming business expenses for your RV certainly will raise your likelyhood of being called in for an audit.
I've talked to several people who live and work from their RV, and almost all do not claim any expenses related to traveling, RV maintenance, etc. Most only claim direct expenses such as advertising, cost of materials or product which is resold, etd. The prevailing view is to not try to write off anything related to their home which is the RV.
Some do write off expenses for a trailer they pull which is solely dedicated the business. Not the expense of transporting the trailer, just direct acquisition of the trailer and maintenance.
But as mentioned above - talk to a CPA. It will be well worth your time / cost.
Full-Time 2014 - ????
โNot all who wander are lost.โ
"You were supposed to turn back at the last street."
2012 Ram 2500 Mega Cab
2014 Flagstaff 832IKBS TT