Dave, we run Yokohamas on the steers and Kumho Longmarks (insert your own joke here) on the drives, and have had fantastic wear and service from them.
This is our second set of Yokohamas, put the first pair on around last year when the forum was full of discussions about the wierd tire cupping and wear problems associated with FL70 steers.
We checked the front alignment then, it was in spec. Put on new Yokohamas and got the best price from Petro, even cheaper than we could of gotten with the Flying J 'discount' tire program. And they had the outside shoulder groove that was thought to limit the cupping problem.
About 7 months later the ride wasn't very good, we started getting some 'river-wear' along the inner tread grooves, so we installed centramatics on the front. Quite a difference in the ride, and it slowed down the wear problem. We finally changed out the steers last month, the wear had me concerned the tread may seperate in the future. We had gotten 116,000 plus miles outta them, so we're satisfied.
Replaced them with the replacement model of that Yokohama, again at Petro, and the one thing I constantly hear from the tire guys is "that's a d*#n good tire".
And like you said earlier Dave, if the front is wiggling your steers are outta balance, if the rear is wiggling it's your drives. After mounting the centramatics on the front I then could feel my rear wiggling going down the road (insert your own joke here) so we put centramatics on the back also. Now the ride is great!
When we pulled into the Speedco the other day the tire guys came over to measure the tread depth to try and sell new tires. We found we still have 14/32's on the Kumhos, and they are at least a year old!
They do good in the snow, only had to back-up a little to regain my footing in a snow covered unplowed lot in Kentucky one time. They have great traction.
We figured the cost of the steers at about .011 cents a rolling mile.
I can live with that!
The Gibster