I am now running 37" tires on my TJ. So for WA your frame rails are not supposed to be higher than 22 inches on the lowest portion. Tires are not supposed to extend past the fenders. Mud flaps or bumper is required to to cover 1/2 the tire height or to the axle.
Bumper height is also limited to a certain height but I can't find the RCW for the exact measurement. But in most cases if you have proper mud flaps and fender flares you won't get an infraction...unless you run into a bored State Trooper.
2008 Commander - 4.7V8 , 4" Superlift stacked with 3.5" Strut lift, 285/70R17's, 3.73's