Lwiddis wrote:
"Ramp under other tire might work, but will need to be pretty steep with some trailers. Now the most risky time is when you get wheel off, discover you need up just little more to get the other on..."
Horror stories that I have never experienced or seen. It works every time and doesn't need to be that steep.
Many trailer suspensions have a lot of travel. If the ramp is not steep or tall enough the flat will start up ramp before it is high enough to get tire on.
The risk I'm referring to is using a jack. If the vehicle is going to fall it is unlikely to do it when just setting on the jack. Going down maybe, but up is much more likely. Many jacks carried to lift trailer must be pumped from under the trailer. If you don't notice the slip or lean when it starts, the trailer falls, it will fill your shorts but if there was room when started lifting, there will be room when stops bouncing.
BUT if you have taken the wheel off that room ain't there.
If you start with the flat on a block, with axle at normal height it takes little lift to get off, and you
know you won't need to jack up without tire on.