I’m looking to replace all four of my tires. I live in Florida and therefore don’t have to be concerned with snow. I’m looking for the cushiest soft and smoothest tires I can possibly get without spending an astronomical amount. Finding something with white walls would be an added bonus. Can anybody help with suggestions? Thanks in advance.

 

Those appear to be 16" wheels. Pick something from a major brand in the "Grand Touring" category, perhaps the Bridgestone Turanza Quiettrack.

If you desire whitewalls, Portawalls will be easier to source than good, fresh whitewall tires.

 

I have got the Michelin primacy 3’s on mine, I’ve had various tyres on mine over the years and these are without doubt the absolute best I’ve had! Perfect grip wet and dry, silent and comfortable, far better than any original spec Pirelli!

 

I'd start by looking at the reviews and ratings at Tirerack.com. I have found the overall ratings there have mirrored my own experience. However, shop by size, not by vehicle. The Jaguar originally had a high speed rating and there isn't much in that rating. Shop by size and there are a lot more options.

Based on comfort, noise, good wet and dry handling, and you don't care about snow performance I'd pick the Bridgestone Turanza Quiettrack.
https://www.tirerack.com/tires/tires...nza+QuietTrack

Those are 16" wheels, the original size is 225 60-16