Better to draw a distinction between foams and rubbers.
Rubber tyres will run acceptably with the same basic setup for tarmac and carpet. Generally a rubber car is softer in both chassis flex and suspension settings.
Foam tyres on carpet generate more grip so require a stiff chassis and suspension setup.
Spool is best suited to rubber tyres, diff is best suited to foam tyres.
However as with all things setup is as much about how it feels TO YOU instead of what someone else says is right.
If the car is EASY for YOU to drive FAST, that is far more important than whether you run a 2mm or 3mm chassis plate becasue it is on a team setup sheet!
Last edited by sosidge; 11-21-2007 at 07:25 AM.
Reason: Sorry there seems to be a problem with the forum time of my posts!