I have about 240 hrs (somewhere close to that) on my bota 3400 and my fronts don't look bad at all.
I do a lot of dirt work and a good bit of highway pavement towing the wood hauling trailers. Maybe 20 or so trips to the woods per year which is 6mi round trip for the last 3 years. so about 180 highway miles from that and probabally another good 50 miles highway doing this and that. (In 2wd though).
Loader is almost always on, and I only ocassionaly use it to mow. It is used a lot in the woods when cutting and other than that, just maintaining my 5 acres with a creek/ditch that runs through it. Which I have re-done twice. And maintaining the gravel drive, digging seceral stumps with FEL, a 3000 gal fish pond, just the usual.
I'll go out and take some pics but they aren't anywhere close to the OP's.