Arizona Trial Ratings
1.0 Rated Trails
Improved dirt road
Small (0-2500lb)
Medium (2500-4500lb)
Large (4500+lb)
Passable by most two wheel
drive vehicles.
 Passable by most two wheel
drive vehicles.
 Passable by most two wheel
drive vehicles.
Information courtesy of azrockcrawler.com
1.0 Rated Trails
Most Forest Service Roads
2.0 Rated Trails
Unimproved dirt roads.  Potholes, minor wash outs, medium sized rocks and mud holes.  
Higher ground clearance helpful.
Small (0-2500lb)
Medium (2500-4500lb)
Large (4500+lb)
Stock 4x4
 Stock 4x4
 Stock 4x4
3.0 Rated Trails
Difficult Trail.  Loose gravel, large pot holes, steep inclines, medium sized rocks, 4 wheel
drive required, aggressive tread and lowered tire pressure helpful.
Small (0-2500lb)
Medium (2500-4500lb)
Large (4500+lb)
Hi-Lift

30" Tires

4:1 Transfer case

Roll cage
 Hi-Lift

31" Tires

Roll cage
 Hi-Lift

Nerf bars

33" tires

Roll cage
3.5 Rated Trails
Hard Trail.  Same as above.  Some rocky sections, go arounds at major obstacles.  Body
damage possible, mainly rocker panel or rear quarter panel.  
Small (0-2500lb)
Medium (2500-4500lb)
Large (4500+lb)
Upgraded bumpers

(Useable as a hi-lift point)

Nerf bars

Skid plates

31"

Rear locker
 Upgraded bumpers

(Useable as a hi-lift point)

Nerf bars

Skid plates

Hi-Lift

32" Tires

Rear locker
 Upgraded bumpers

(Useable as a hi-lift point)

Skid plates

Rear locker
4.0 Rated Trails
Moderate rocky trail.  Frequent ledges, crevices, large boulders, steep inclines and off
camber situations.  Body and or tire damage likely. Spotters may be needed for some
obstacles. Low tire pressure required, good chance of loosing a bead. Possible
component breakages.
Small (0-2500lb)
Medium (2500-4500lb)
Large (4500+lb)
Front Locker
T-Case Skid Plate

Lower Ring & Pinions

33" Tires

Recommend spare axles

Recommend spare steering
parts

Wider than stock track width
 Front locker
35" tires

Upgraded axles

Lower ring & pinions

Transfer case gear reduction
(w/ manual transmission)

Winch

Recommend spare axles

Recommend spare steering
parts
 Front locker
38" tires

Beadlock rims

Upgraded axles

Lower ring & pinions

Transfer case gear reduction
(w/ manual transmission)

Winch

Recommend spare axles

Recommend spare steering
parts
2.0 Rated Trails

Appetizer

Crown King (Back Way)

Tip Top Loop

Reno Pass
3.0 Rated Trails
Log Corral Trail

Lower Firebird

Powerline Trail

Raw Deal

Ruby Wash (Optional Obstacles)

Trail 42 (Changes greatly depending on rainfall)

Upper Woodpecker
3.5 Rated Trails
Bumble Bee Creek

Can Opener

Judgement Day

Terminator

Predator (Used to be a 4)

Rocker Panel Pass
4.0 Rated Trails
Axle Alley (Most will need to winch at the end, used to be a 5)

Bad Medicine

Highway to Hell (Horribly stacked, from what I heard,  now a
3, was  a 5)

Lower Woodpecker

Lost World (Taking all the hard lines, there are bypasses)

Martinez Canyon

Payeatt Draw

Squeeze Rock

Upper Firebird
4.5 Rated Trails
Hard rocky trail.  Same as a 4.0 rated trail but the obstacles are bigger, tighter squeezes
and bigger risks to body and mechanical components.  Few bypasses if any.  Longer
wheelbase vehicles may have problems with breakover angles, short wheelbase vehicles
may have to use a winch or strap on some obstacles.  Large vehicles will damage sheet
metal.  Spotter may be needed for all major obstacles. Rollovers possible. Plan for common
component breakages (vehicle specific).
Small (0-2500lb)
Medium (2500-4500lb)
Large (4500+lb)
Winch
35" off-road tires

(Swamper/Bogger/MTR)

Upgraded Axles

Aim for a 90:1 Crawl ratio w/
stock motor

Source for on-board air

Beadlock rims

Flexible suspension
 38" off-road tires  
(Swamper/Bogger/MTR)

D44 or better axles

Source for on-board air

Beadlock rims

Flexible suspension

Wider than stock track width
 40" off-road tires  
(Swamper/Bogger/MTR)

D60 or better axles

Source for on-board air

Flexible suspension
4.5 Rated Trails
Anaconda

Armageddon (Stacked pretty bady, is currently closed)

Chaos

Hysteria

Jawbreaker

Landslide (Getting stacked, heard it was getting easy)

Lower Morningstar

Overdose

Woody's Wash (was a 5, 1st obstacle getting stacked)
5.0 Rated Trails
Extreme rocky trail.  Same as a 4.5 rated trail but the obstacles are bigger, tighter squeezes
and bigger risks to body and mechanical components.  No bypasses.  Body damage
guaranteed.  Spotters needed for most of trail.  Rollovers likely.  Some obstacles may
require a winch for larger vehicles. Trail may be impassible when wet. Plan for major
component breakages.  Realistically these trails should be run with rock buggies.
Small (0-2500lb)
Medium (2500-4500lb)
Large (4500+lb)
37" or better tires

D44 or better axles

Remove all unneeded body
parts

100" Wheelbase
 (Swamper/Bogger/MTR)

Transfer case gear reduction
(w/Automatic transmission)

Remove all unneeded body
parts

100" Wheelbase
 Transfer case gear reduction
(w/Automatic transmission)
Some obstacles may be
impassible.
5.0 Rated Trails
6th Day

Annihilator

Collateral Damage

Die Hard

Matrix

Pet Cemetary

Resolution

Skullcrusher

Twisted
5.5 Rated Trails
Insane trail. Same as a 5.0 rated trail except all of the obstacles are bigger.  Constant
spotting required, vehicles will get hung up frequently, undercarriage will catch rocks.  At
some point a winch will be required to support the full weight of the vehicle.
Small (0-2500lb)
Medium (2500-4500lb)
Large (4500+lb)
Change of underwear
 Change of underwear
 Trail likely is impassible.
5.5 Rated Trails
Asylum

Seed of Chucky

Hellraiser

Matrix Reloaded

Sanitarium