I'm cooking tri-tip for 40 people tomorrow. This has become my favorite red meat. It's lean [healthful], and tastes wonderful, both hot and later in cold sammies.

Study the grain of the meat. Notices that it changes directions. Cut thin against the grain and you won't have any toughness problems.

I rub [to create a crust]...
Rest, wrapped in fridge
Sear each side for 2 min
Roast @ 350 until inside is 125F to 130F
Wrap in foil for min 30 min --

Slice and serve...

This is incredibly yummy stuff! Ya sorta wish you could go back in a time machine and thank the steer.

Best Wishes!