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Anti-roll bars are fitted front and/or rear on an as-required basis. The standard 14.00 R 20 tyres may be replaced by 395/85 R 20, 525/65 R 20 or 16.00 R 20 tyres if required. On heavy tractor trucks, a 24 R 21 option exists for rear axles. Tyre chains for all tyre sizes up to 16.00 R 20 are permitted.
An anti-roll bar (roll bar, anti-sway bar, sway bar, stabilizer bar) is an automobile suspension part that helps reduce the body roll of a vehicle during fast cornering or over road irregularities. It links opposite front or rear wheels to a torsion spring using short lever arms for anchors.
[8] [9] Light trucks will roll over at lateral accelerations of 0.8 to 1.2 g. Large commercial trucks will roll at lateral accelerations as low as 0.2 g [10] Trucks are more likely to roll over than passenger cars because they usually have taller bodies and higher ground clearance. This raises the center of mass.
Roll bar or rollbar may refer to: Roll bar, also known as anti-roll bar or sway bar, a torsion spring bar that reduces vehicle roll; Roll cage, a vehicle frame designed to protect occupants in the event of a crash; Rollover protection structure, or rollover bar, similar in purpose to a roll cage, and fitted to open-topped cars or agricultural ...
Some tractor operators have raised concerns about using ROPS in low-clearance environments, such as in orchards and buildings. In response, NIOSH developed an Automatically Deploying Rollover Protective Structure (AutoROPS) which stays in a lowered position until a rollover condition is determined, at which time it deploys to a fully extended and locked position.
Torsion bar suspensions are used on combat vehicles and tanks like the T-72, Leopard 1, Leopard 2, M26 Pershing, M18 Hellcat, M48 Patton, M60 Patton and the M1 Abrams (many tanks from World War II used this suspension), and on modern trucks and SUVs from Ford, Chrysler, GM, Mitsubishi, Mazda, Nissan, Isuzu, LuAZ, and Toyota.