Need suggestions with my wheels

Hello everyone,

I've got a 2001 F-150, Super Cab, 4x4 and a Flaired Body molding.

I think the tires that are on it, when I bought it, are the original 17" or 19" Alloys, but I've been thinking of putting 20" ones on.

Has anyone here done this? Does it look OK or does it look dorky?

Thanks,

KidAce