Charger weighs around 4200lb without driver , used mickey thompson , good year & hoosiers slicks , seems the car feels like it's on ice mid track (28x10.5x15"), only time the car will handle is if i inflate the tyres to 15/16psi , which just spins it off the line , is there a tyre for heavier cars like the stiff sidewall? & will it help? , runs 10.6 @ 130mph , having to lift off the throttle mid track with tyre pressures below 14psi.

Caltracs with monos & ranchero shocks , front shocks are standard.

Thanks,