Tein Street Advance Z Coilover Suspension Kit - 3 Series Sedan (E90) VB23 GruppeM This makes it difficult to

This makes it difficult to brake reliably while cornering or control the vehicle during acceleration

Internal E-Throttle Controller

Unlike OEM cam seals

and so when the car is lowered

5x locking nuts and 1x locking nut tool (23x nuts in total)

Tein Street Advance Z Coilover Suspension Kit - 3 Series Sedan (E90) VB23 GruppeM This makes it difficult toMuch like Tein Street Basis, Street Advance utilises a twin tube system and has adjustable lowering spring seats allowing you to adjust ride height. Unlike Street Basis, it also features adjustable damping force, allowing you to effectively change your handling characteristics. Compared to mono tube suspension, Street Basis is twin tube, meaning it attains a longer stroke with a smaller repulsive force, resulting in excellent high ride comfort.