Rsimoes,
The Toyos are 275/60/15 all around. They are true 'H' rated tires built for the Ford Lightning. They are a little chunky looking but I've gotten used to them. I can cruise at 120, no problem.
The TAs that I had were only S rated (112 mph). I hit that going up the on-ramp sometimes! The Firestones and Yoko Avids are S rated also. Check out
http://www.tirerack.com for yourself.
Paul