If you like Coopers, Pep Boys is running a buy 3 tires, get the 4th free with no installation cost. It comes out to $621 out the door. NOBODY beats that price.
Not that it's the same tire, but I got a set of 275/55R20 Yokohama Geolandar HT G056 for $590 all in on sale on Walmart.com. The normal price on this tire is around $180 per tire and a set of these at Discount Tire is over $1000 with mounting, balancing and road hazard.
I took a chance and let Walmart mount them. The premium mounting balancing includes road hazard and was around $115. They didn't damage anything, I was worried about them marking up my rims, but the tires need to be rebalanced after a couple of months, not surprising. If I lived in a state with lower speed limits, the current balancing would be fine, but there are multiple freeways around here with limits of 75, 80 even 85 MPH and the shimmy is noticeable above 75. I'll probably take it elsewhere for the rebalance. Still. overall, I saved close to $300 over "Discount" Tire and even if I pay $50 to get them balanced elsewhere, I'm still way ahead.
My use case is 100% on road and I am happy with these tires for that, they are quiet and ride great. Some of the online reviewers for this tire model complained they weren't good in the rain, but they seem fine to me as long as you slow down to a reasonable speed for the conditions, 60 mph or so. Granted, the reviews were on all types of vehicle and all sizes of this same tire. As we all know these vehicles are about a couple donuts short of 3 tons, so maybe that helps with plowing through deep puddles. And we do a lot of that around here - the rain comes in buckets when it comes, all on or all off. I'm from Oregon originally and this area gets 90% of the rain that I got in Oregon, but it arrives in 100 less cloudy drizzly days.