"Standard" tire rotation only applied to bias ply tires, radials have
always been rotated front to rear only. They really don't like to have
rotational direction changed, it tends to make the steel belts come
out.
Front to rear is fine, you won't get one-sided wear on a modern car
unless there is something wrong with the suspension. Front to rear
will keep more tread on the front tires (they wear faster on the sides
from cornering).
I've never completely worn out a tire in normal use, I've always had to
replace them due to abnormal wear (bad tie rods or something like that)
or belt separation.
Peter
