I have a 2021 with 3" Journey's lift kit with 235/60/18 AT tires, as I do a lot of rough road driving on desert and mountain escapes. Vehicle has 40K miles on it, lifted 10,000 miles ago and suddenly my sway bars started knocking. My local mechanic, who does a lot of offroad modifications, is replacing the sway bars but doesn't think the lift kit is the issue, and I don't think its from the slightly taller tires (235/55/18's before the lift). I have no tire rub anywhere and he also doesn't think the upsized tires are the issue. I guess this is an experiment - otherwise love my ride - and the mileage while still having a rig I can take off the asphalt with no qualms. Do miss my 4-Runner for those rare times I needed all the clearance but absolutely do not miss the crappy MPG and road ride. Given all the folks who eyeball my lifted ride I'm kind of surprised Toyota doesn't have a stock light off-road trim, which should include trimmed front bumper flare.I ran into my first issue with the lift kit. Starting to get some clunking sound going over rough pavement.
Sounded similar to when a ball joint failed in my other car. Ended up that the sway bar end links were bone dry.
It's been about 15k miles since I installed the lift kit (9 months ago). My fault for not checking those sooner.
Once greased up it sounded a lot better, but still making some noise so they'll likely need to be replaced in the near future.
MOOG recommends greasing annually or every oil change. With the way I use the car, I should have probably been doing a 5k interval.
Anyhow, hope this helps someone out.