Anyone have any luck finding an alternative tire for the 6" rims?

I have had Aero Classics 8.50-6 on order since February and still no sign of when they will be in stock. September was last projection date but every projection date has been wrong so far, so I am not holding my breath.

Carlisle makes a "Turf Glide" tire that would fit but I can't find any data on rated load rating. Anyone use these?

Other suggestions?

Really hard to have a brand new airplane sitting here waiting to fly and tires are the only hold up.......Grrr....