Ok, guess I didn't explain myself very well. My plan was to use the to change 2 tires at a time in order to replace the China tires that are on the trailer now. Since I can not work on the trailer in storage, I was just going to pull 2 tires off, have the new ones mounted and balanced and put them back on the trailer. I would then move the ramps to the other 2 tires and repeat the process.
I would back onto the ramps first and place jack stands under the axles, do the tire change and then pull onto the ramps and repeat. Do you guys think this is doable without causing any damage? I have a small floor jack for when I am on the road and would use this if I had too.
I may be wrong, but I feel this would be easier than dragging the trailer through downtown to get to the nearest tire shop that would mount and balance the new tires. Sorry for all the confusion.