Trailer Tire help please

You can't mix them, you have to replace all 8. 11r22.5 is a bigger tire, so your trailer height in the back would increase. You would need to check the rear trailer height. Obviously if it is already 13 6" you don't want to go with an 11r

 

If you are air ride it's easy enough to lower ride height a touch to make up the difference.
And there really isn't a reason you couldn't run lo-pro on one axle and talls on the other

 

Only way a van trailer goes near 13’6” is with 11R-24.5’s. Should only be 13’4” or so on 22.5’s.

 

Sizes and Specs | Goodyear Tires

11’s are a full inch taller. They will have to be paired together on a different axle. Do not mount them on same hub with a 295.
Keep in mind size variance is different among different makes. So a GDY 11 could be different dia. from a Mic or BFS 11’s. Gdy 295 can be up to 3/4” dia. different from other makes 295’s as well

 

Technically you could do one axle, but it is not a good idea. One the tires on axle will be spinning faster than the other, which will wear out the tires faster on one axle.

 

It's a trailer, the axles are not connected in any way. If the front axle tires are spinning faster than the rear axle tires neither axle cares

 

Yep. Like said trailer axles don’t care. But it is recommended that they are staggered if need be to keep the axles from trying to steer the trailer in a direction other then straight. If that makes since. If you put the taller ones on one side it will push the trailer towards the shorter side like a rolling cone does.

 

I am aware of that, but you didn't read what I wrote. If one axle is traveling faster than the other, the tires on the faster axle are going to wear out faster. A lot of guys replace all 8 when they need tires.