Not knowing the original tire size will make this a bit more challenging, but it can be done.
If you can provide more information about your trailer, it would make choosing the correct wheel/tire combo easier.
The following would be very helpful-
The bolt pattern of your hubs (see FAQ article)
The axle or trailer capacity (should be listed on a plate or sticker somewhere on the trailer)
Center of spindle to inside of fender measurement
My hope was that with the serial # or VIN from... view full answer...
It is always best to use a jack (or winch, for that matter) that is rated for more weight than you're actually going to put on it. This typically allows such products to work more reliably and to also last longer.
The Pro Series 5K a-frame jack you referenced, part # PS1400600303, has a 2-inch diameter inner jack tube and an outer jack tube with a diameter of 2-1/4-inches, as noted in the specs.
Since this jack does NOT include a caster wheel or a foot plate, you can select along with... view full answer...