Just bought 5th Gen SR5. My 4th 4Runner. Tires are 265/70R 17 Dunlop AT20 Grandtrek. They must be changed as we spend 6 months in Baja, highway and off road. Lots of potholes at 70 mph, no way the Dunlops are staying on. Looking at Michelin LTX M&S or M&S2. Costco has best deal. Are "club" tires (Costco, Walmart, Sams, etc.) different when the same tire as others offer? How does the LTX seem for our use (wife's car, I have a 4X4 Tacoma TRD)? I want durability and highway quiet, 4X4 use not that important. There's too much tire info out there, turning to the experienced experts who aren't selling anything.