240,000 miles - 2007 Tundra DC 5.7 4x4 4.30 gears. Bought the truck stock in 2017 with 109k miles. In 2018 at 134k miles, I added 4.5" Fabtech Lift up front, 1.5" Icon spring kit rear (no spacers), Ride Rite air bags and 35" tires. Daily driver. I tow a 5k toy hauler 3,000 miles a year across West Virginia/VA mountains. Replaced starter (2018), water pump & radiator (after a dealer suggested flush - I told the rep it will probably make the water pump seals leak - 2 weeks later had a weep), rear end 3rd member- bearings, ring and pinion housing in 2018 after crossing flooded roads and water got into the case ruining the gears/pinion seal over a few thousand miles before I figured it out. rear wheel bearings (180k miles), Adams extreme duty driveshaft - chasing harmonics - stock shaft was probably fine but I had been jumping (<1'-2' jumps) the truck some, front wheel bearings (200k miles), used front differential due to possible spider gear breakage due to 4x4 on rock surface at full lock - was making popping noise, 1 additional rear wheel bearing (230k miles - maybe due to towing and 35" tires). Switched to 33" tires (from 35") at 235k miles to improve towing over the mountains. If I'd have known all that I would replace I would have bought a currie 9" rear end and re-geared the truck with 4.88s, but these repairs/events were happening over a few years. I guess I've been a little hard on it but it still runs, looks, and drives great. Love it.