Where are the jacking points for changing tire?

[dexters]

Originally Posted by Cumminsfan

If you use a tire aide you are putting all the weight from one side on one axle. With a bottle jack you still have the weigh even distributed over both axles.

Doesn't the bottle jack go under the spring perch for the tire being changed (flat) thereby putting all the weight on that one axle?

[Cumminsfan]

Originally Posted by dexters

Doesn't the bottle jack go under the spring perch for the tire being changed (flat) thereby putting all the weight on that one axle?

No because the other tire is still on the ground. You only need to jack up the tire about 1-1/2" max. No different than going up a driveway somewhere. If you use the trailer aid you are supporting the whole trailer with just the one tire and axle. It may not be that much of a big deal but after owning a trailer with a bent axle (For what ever reason) I don't want to take any chances.
On the other hand if you have a blowout and one tires shredded then one axle/tire is holding the weight off side till you can get off the road and change it.