My experience says they definitely make.a.difference.in handly in snow, low profile tires tend.to plow straight ahead in snow taller narrower help.with that and with front or AWD they pull.
How are you going to know unless you look at it, it could have had 10 years of meticulous dealer service, but owned by a chain smoker or or dog lover. Mechanically great but you can't stand the smell.
If you have fuel dilution that is going to cause engine failure before 200,000 to 250,000 miles Stop/Start isn't going to fix it.
I certainly don't know for sure but the dumb old submarine Torpedoman in me says you'll likely spend more on batteries and beefed up starters than you save in fuel...
It's not always about money, this came from Wikipedia do so take it for what is worth here's a snippet link is below.
"Additional changes include a new lightweight cam to save weight, dual-chain cam drive system that is stronger and reduces parasitic friction loss, a new electrically actuated...
2017 Ram 1500 abt 50,000 miles, 5000 or so OCI with 5w-20 Valvoline Full Synthetic with Mopar/Fram TG/Supertech MP Filters. Zero Issues
I had over 200,000 on a 2006 Grand Cherokee 5.7 with MDS Oil Changes same as the truck zero engine issues.