I had my local Firestone install my port a walls on my radial tires a while back.
showed them to the guys at the counter... met with puzzled looks.
then one of them said, "Hey, check with Blue, he may know what to do".
"Blue" was an older black gentleman who took one look and knew exactly what I had... and he installed them.
working ever since for me.
no much high speed driving, however, so I can't speak to sustained freeway speeds.
Mark
"God Bless Texas"location: Houston,TX