Especially (though not exclusive) suitable for. Note these are guides only and trips can change depending on various factors, i.e. weather.
Grade
Easy
Novice Drivers
Easy 4×4 driving on little or no rough terrain or shallow water.
No damage or scratches likely.
Road or all terrain tyres sufficient.
Snorkel not necessary
Easy to Medium
Novice to Intermediate Drivers
Rougher off-road tracks, some mud, bumper depth (or higher) water, some ruts. Possible scratches.
All terrain or mud tyres and snorkel strongly recommended.
Medium
Intermediate Drivers
Harder terrain, more mud, wheel height water.
Scratches and other damage possible.
Mud tyres and snorkels strongly recommended.
Medium to Tough
Intermediate to Experienced Drivers
Rough, muddy, steep, rutty and/or boggy terrain, wheel depth plus water.
Scratches and other damage possible.
Mud tyres and snorkel strongly recommended.
Tough
Experienced Drivers
Hard technical terrain, bush bashing, rough, steep, boggy, swampy, rutty terrain, deep water.
Scratches, body and other damage highly possible.
For well equipped vehicles only.