Head-to-Head Comparison
Progressive Rate vs Linear Leaf Springs: Which Is Right for Armoured Vehicles?
Two leaf spring designs, one critical choice for armoured vehicles. Here's why progressive rate springs from Tough Dog Armoured are engineered to handle the dual challenge of armour load and ride quality.
The Winner: Progressive Rate
Progressive rate leaf springs are the superior choice for armoured vehicles. The variable rate design means the spring is compliant under light load (preserving ride quality) and progressively stiffens as armour weight is applied (preventing bottoming out and maintaining ride height). This dual-state capability is essential for vehicles that operate both with and without armour packages.
Linear Rate
Linear rate springs have a fixed spring rate regardless of load. While simpler and cheaper, they cannot adapt to the dramatic weight changes in armoured vehicle applications. Under armour load, they risk bottoming out and permanent sag. Better suited to vehicles with consistent, predictable loading.
The Verdict
Progressive Rate Wins for Armoured Vehicles
Tough Dog Armoured's SUP9/SUP9A progressive rate leaf springs handle the dual challenge of armour load and ride quality. Get specifications for your vehicle platform.