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StylinLP38's avatar
StylinLP38
Explorer
Jun 30, 2018

New Truck and Tires advice

Well, I own a 2017 Outdoor RV 20" Creekside trailer with no slide outs. At the scale it weights 4750 lbs. I took it from Phx AZ to Santa Monica camp group once and twice for a month each to the Rock Mountains. Was using my 2015 Jeep Grand Cherokee 3.6 liter. I can get up to 75mph (I usually stay at 65mph) but drop to 45mph going up 7% grades and 8 MPG. The entire trip I averaged 9 mpg.

Now I want a truck. I real truck and I might even upgrade my trailer to a 25' model too someday. So I got my choices narrowed down to

2018 Chevy Silverado High Country 6.2 liter
but it comes with 22" drives and Brigdestone Dueler A/T TH-s
285/45 22" rated at 2337 lbs

2019 RAM 1500 Laredo with 5.7 HEMI
It comes with 20" tires Bridgetone 275/55 20"
rated at 2561 lbs

Both tire choices plain suck. On my Jeep Grand Cherokee I bought new Cooper Adventure A/T 18" tires that are 8 ply and rated over 3000.

What size tires should I have the dealership change those existing tires to? Those that come with those models sure are not towing tires.
I was thinking of the Cooper Discover A/T 3 rated at 2892 lbs but that is still not a LT tire...On the Chevy should I have them put on 20" rims instead and get a better tire? I read on here that 55 height of a tire does not have enough side wall and has a stiff ride.