Wheels i have used marine
ply and oregon
,had it treated at twice the below ground rate for the last 20 odd years and had no problems with gluing it ,i saw a boat i rebuilt 20 years ago and and the treated ply cabin
was as good as the day i built it.The epoxy
glues we have today work great ,the one draw back that treated timber has is getting paint
to stay stuck to it but a coat of everdure fixes that.