Yeah, front wheels are wider to be able to fit the newer engine in between the chassis rails.
Per
www.mr4x4.com.au/2017-landcruiser-70-series-7-things-love-1-hate/ :
"All of this development is great, but one big thing that Toyota didn’t fix is that abhorrently different wheel track difference. When they fitted the V8, the front axle was widened to squeeze the two banks of cylinders in. But, they didn’t tweak the back to suit, meaning there is a whopping 100mm (or four inches, in the old money).
Toyota know about it, and their research indicated that some were complaining about it. But, other things came first. Sometimes, it’s really noticable, no doubt. It won’t get you bogged all the time, or cause the car to flip on it’s lid at a moment’s notice, but the dynamics do feel strange sometimes, and your often pushing through extra mud or sand when you’re offroading. If it was corrected, the car would undoubtedly be more stable. Anyway, lucky you’ve got that V8, but I still find it quite annoying."