I bought my HR in CA in August 2004 and the dealer did not collect sales tax when I registered it in CA. AS long as I kept it out of CA for 90 days and kept receipts that I was out of state all that time the dealer told me I would not have to pay. The dealer also had the coach delivered to me in Primm, NV just over the CA border so I didn't drive it out of the state. Fortunately I was leaving on a 4 month trip to the East in a week or two after I bought it. I kept all my receipts for 4 months, still have them too, but the CA DMV has never requested them as the dealer said they might. I owned a home in Las Vegas then so even though I registered in CA they apparently assummed I was out of state anyway. It is still registered in CA and I recently renewed the plates with no problem.
But the kicker now is that you have to stay out of CA for one year to qualify for no sales tax, which is what the dealer told me. Dealer was Canyon RV Center in Irvine/Colton.
2005 Holiday Rambler Vacationer, Model 36DBD, W22, 4-Koni FSD's, UltraPower Programming Module, Safe 'T Steer
'05 GMC Canyon Crew Cab 4WD, Aluminator, Brake Buddy