Wide tires take more fuel to roll (more rolling friction) than skinny tires. But!! They also give a better ride, more solid "footprint" and best of all they look great!!

I know I am kinda old school on this subject, but back in my day

wide tires were all we ran. Skinny tires are fine if that is your cup of tea, but you need to make sure you get at least enough to support the weight of your vehicle. Too small tires can be dangerous.
Just my opinion
Matt