No problem with TSS if you order those two parts. The new garnish has a 1/4” notch around the TSS sensor and doesn’t touch it. It also helps you align it straight so it’s a win-win! The hard part is getting your upper grille off. Watch a couple videos on heritage grille replacements and you’ll see it just needs a little more force than you would comfortably apply to a brand new car haha. It just pops straight out. There are actually a few tabs in the upper grille that you push on to make it come out a little easier.
The 275/70/17s are running great. Minor drop in MPG. I have noticed a couple times where it rubs ever so slightly when turned at full clock but only when she leans to the side a lot due to speed weight or angle of the turn. So if I pull into a parking spot quickly, it might rub for a split second. I’ve been running them for about a month now and the rub is so minor I haven’t done the fender liner mod yet, but one day I’ll get some time to do it. Looks dead simple to do. I plan on a 2” lift so it may not be needed.