I have lived in Chapala since 2007 and traveled the west Pacific highway this past April. I crossed at Nogales, only took about 15 minutes to obtain my tourist visa once I crossed the border. I had a Visa to live in Mexico for 9 years but due to the change in immigration laws I dropped it and now come down on a 6 month tourist visa. I have a 30 foot motorhome and have traveled all over Mexico. In 2010 I drove to Panama with 2 other motorhomes, we spent a year traveling thru Central America. I will return to the USA in October and plan on driving back to Chapala in December or January. Others mention the bypass around Guadalajara and they are correct in that it is a bear to drive. It has been improved the past 10 years but I still grit my teeth when driving it. You are NOT allowed to drive a 5th wheel or RV inside the city and will be ticketed if you do.
I have crossed the border at Laredo, Texas and McAllen, Texas. I used to cross all the time at Santa Theresa, New Mexico which is near El Paso, Texas but there are no RV parks for most the drive and it is a lonely drive with few vehicles in the event you break down. I now cross at Nogales, Arizona and drive down the Pacific coast highway. At Tepic, Nayarit I go east to Guadalajara and then to Chapala. More traffic so I feel safer and there are RV parks but a long drive between them.
I built a place for my RV in Chapala and have space for another RV or 5th wheel with 30/50 AMP service, water and sewer. You can view my place at https://www.flickr.com/photos/ronohio/albums
and look at the pictures n the Albums section. These were taken back in 2011 and since then I have planted more trees and shrubs and now looks completely different. You can see the RV I had at the time parked in the bay and friends of mine parked at the other RV site. A friend of mine has his trailer parked there now but will be moving it. Ron