If you want to waste money and destroy your car in the long run, do it

Autofoam is a waste of time and money.

Foaming your chassis means, giving moisture an opportunity to be trapped by the foam. Trapped moisture means rust, rust means weaker chassis

Without understanding actual car's design. Foaming cannot reduce noise and increase stiffness effectively. Also, foam is NOT even close to being as hard as steel.

When you say comfort, I presume you want reduced noise, noise rarely travel through the chassis into cabin. Sound travels in a straight line and radiates from source. Foaming your chassis is like putting a finger few centimeters away from your ear, trying not to hear the radio.

What model of car are you planning to foam?

If newer gen car then no need consider foaming la..... latest gen chassis all very rigid already. no need spend extra unnecessarily.

if iswara wira or other older generation with soft chassis, then maybe la

Wa! new car sir!

Already unhappy with noise? What noise is bothering you?