The larger the tire diameter the "flatter" it acts as it contacts the road, so he is right in saying the the contact patch is larger on a bigger diameter tire - if you assume that there is the same amount of tire deflection on both tires.
2000 SVT Turbo 295hp/269ftlb@12psi
#1 for Bendix Brakes Kits!
Knuckles rebuilt w/new bearings $55
AUSSIE ENDLINKS $70
Gutted pre-cats $80/set
A lack of planning on your part does not constitute an emergency on mine!