Hi
My 2010 has the worst isolation btw the previous 2003 and 2006 s.
My mechanic agreed that too.Ford lightened that area i guess.
Has anyone done isolation pads to wheel archs or doors?
And if so the outcome? 2010 3.6tdv8 180k km.
sold 06 td6 160k
Sold 03 td6 260k

I didn't touch the doors but fitted deadening material to reduce resonance from noisy tyres to all flat surfaces behind the front wheel arch liners including the outsides of the foot-wells, the floor and walls of the spare wheel well and along the inside face of the channels under the floor. Resonance was reduced a lot but I should have also lined the rear wheel arches behind the liners. Those tyres are gone and I wont fit them again.

Great to hear it worked.
What material did u use?
Did u fit anything to arch linings or direct to chassis?
Thanks 2010 3.6tdv8 180k km.
sold 06 td6 160k
Sold 03 td6 260k

The brand was Car Builder sound deadener stick-on sheets, pressed on with their roller. I applied patches to all panel sections that sounded hollow or vibrated when tapped, including the insides of the top of the front guards and any flat surface on the body frame behind the plastic inner guards but not to the inner guards themselves. The patches only need to be large enough to stop the panel from sounding hollow or vibrating rather than cover large areas, excepting for the spare wheel well which I mostly covered edge to edge. The backs of the brake stone shields also got a patch or 2 as they tend to vibrate, as did the thin metal shield under the gearbox.