Rock Rat Trail Ratings

Arizona Rock Rats - Trails
4x4 Trail Information

Trail Ratings Used on This Site

NOTES: Trail ratings on this site differs than most other 4WD clubs and websites. Due to the nature of the trails the Rock Rats wheel, the standard ASA4WDC Trail Ratings just were not specific enough. The problem using this system is that two trails will have the same "4.5" rating (i.e. "Upper Terminator" and "Axle Alley") but the two trails are vastly different (as anyone who has wheeled these trails can tell you). So the following trail rating system is presented and used on this website:
0	*2WD:* A class zero trail is any road on which the average family car can be driven. This includes all Freeways, Highways, Byways, County Roads, Grated Dirt Roads, Semi-Annually Maintained Roads, etc... ASA4WDC Rating: 0.0 Through 1.5
1	*2WD/Easy 4WD:* A Class One trail requires the additional ground clearance offered by 2WD and 4WD Sport Utility Vehicles (SUV). These trails feature obstacles that are easy to navigate. In optimum weather conditions, these trails may not require the continual use of four-wheel drive (4WD). Vehicles equipped with a rear locker or limited slip will likely not need 4WD even under adverse conditions. ASA4WDC Rating: 2.0
2	*Entry Level 4WD:* A Class Two trail requires 4WD, however, a full locker under optimal weather conditions may prevent the need (in some vehicles) for 4WD. Low range may be necessary and off-road (agressive tread) tires are recomended. Skid plates to protect sensitive items (i.e. Engine and Transmission Oil pans, Transfer Cases, Rocker Panels, etc..) are recommended; highly recommended if vehicle is not lifted (i.e. stock suspension). These trails feature a wide variety of challenges: Potholes, minor washouts, soccer ball size rocks, and mud holes, etc. ASA4WDC Rating: 2.5
3	*Moderate 4WD:* A Class Three trail requires Low Range 4WD. Although passable by a stock 4WD vehicle, a Limited Slip differential (Front or Rear) and lift is highly recommended, if not lifted, then skid plates are required to prevent damage to sensitive items. Aggressive off-road tires and lower air pressure is recommended. These trails feature a variety of more difficult challenges: loose rocks, large potholes, steep inclines, larger rocks,etc. Moderate experience and driving skill advised. Likely paint damage, possible rocker-panel damage. ASA4WDC Rating: 3.0
4	*Challenging 4WD:* A Class Four trail requires Low Range 4WD, off-road tires, lift, at least one traction device, (lockers or LSD with increased articulation), and skid plates are required. At least one full locker, and larger tires are highly recommended. These trails require above average Off-Road driving skills. High-Lift jacks and winches may also be helpful. There will likely be paint damage and possible vehicle body and/or mechanical damage. These trails feature loose steep hill climbs, 24" ledges and rocks. Rollovers, while not common are possible. ASA4WDC Rating: 3.5
5	*Difficult 4WD/Easy Rock Crawling:* A Class Five trail is an entry level Rock Crawling trail. Traction Devices (Lockers or Limited Slip) are required in both differentials. 31" Tires, Skid Plates and Lift are required. Lower gears, 32"+ tires, high lift jacks, body armor, etc are highly recommended. These trails traverse very rugged terrain featuring 30" ledges, pot holes and rocks. Rollovers, while not common are possible; correct tire placement becomes more important. Winches may also be helpful. ASA4WDC Rating: 3.5
6	*Mild Rock Crawling:* A Class Six trail is a Mild Rock Crawling trail. Traction Devices (Lockers or Limited Slip) are required in both differentials, at least one full Locker. 32" Tires, Skid Plates and Lift are required. Lower gears, Upgraded Drive Train Components, 33"+ tires, high lift jacks, body armor, etc are highly recommended. These trails traverse very rugged terrain featuring 36" ledges, pot holes and rocks. Rollovers, while not common become increasingly possible. Correct tire placement becomes increasingly important to avoid rollovers, mechanical damage and body damage. Bring spare parts such as axles, u-joints and driveshafts. Winches may also be helpful. ASA4WDC Rating: 4.0
7	*Moderate Rock Crawling:* A Class Seven trail is a Moderate Rock Crawling trail. Full Lockers are required in both differentials. 33" Tires, Skid Plates, Lower gears, Upgraded Drive Train Components and Lift are required. 35"+ tires, high lift jacks, body armor, and Winches are highly recommended. These trails traverse very rugged terrain featuring 42" ledges, pot holes and rocks. Rollovers are more likely, especially when pushing a "bad line". Correct tire placement becomes critical in avoiding rollovers, mechanical damage and body damage. Bring spare parts such as axles, u-joints and driveshafts. ASA4WDC Rating: 4.5
8	*Difficult Rock Crawling:* A Class Eight trail is a Difficult Rock Crawling trail. Full Lockers are required in both differentials. 35" Tires, Skid Plates, Lower gears, Upgraded Drive Train Components, Winches and Lift are required. 37"+ tires, high lift jacks, body armor, and on board welder are highly recommended. These trails traverse extremely rugged terrain featuring 48" ledges, pot holes and rocks. Rollovers are more common. Use of a Winch and Correct tire placement becomes critical in avoiding rollovers, mechanical damage and body damage. Bring spare parts such as axles, u-joints and driveshafts. ASA4WDC Rating: 4.5
9	*Extreme Rock Crawling:* Class Nine trails are for the Extreme Rock Crawler in a Highly Modified vehicle only. Full Lockers are required in both differentials. 37" Tires, Skid Plates, Lower gears, Upgraded Drive Train Components, Winches and Lift are required. 38"+ tires, high lift jacks, body armor, and on board welder are highly recommended. These trails traverse extremely rugged terrain featuring Jeep size ledges, pot holes and rocks. Rollovers are increasingly common. Use of a Winch and Correct tire placement becomes critical in avoiding rollovers, mechanical damage and body damage. Paint damage is virtually guaranteed, body and/or mechanical damage is very likely. Certain obstacles may not be passable without the use of a winch. Bring spare parts such as axles, u-joints and driveshafts. ASA4WDC Rating: Off the scale...
10	*Impassable trail:* Class Ten trails are impassable, even the Extreme Rock Crawler in a Highly Modified vehicle will require the use of a winch. Full Lockers are required in both differentials. 37" Tires, Skid Plates, Lower gears, Upgraded Drive Train Components, Winches and Lift are required. 38"+ tires, high lift jacks, body armor, and on board welder are highly recommended. These trails traverse impassable terrain featuring house size ledges, pot holes and rocks. Rollovers are virtually guaranteed. Use of a Winch and Correct tire placement becomes critical in completing the obstacle. Paint damage is virtually guaranteed, body and/or mechanical damage is extremely likely. Certain obstacles will require the use of a winch. Bring spare parts such as axles, u-joints and driveshafts. ASA4WDC Rating: Way Off the scale...
A Zero Rated Trail/Obstacle