A tree that was everywhere for a reason
Drive through almost any Goodlettsville-area subdivision built between the late 1990s and mid-2010s and you'll spot the same tree over and over along the street and in the front yard - Bradford pear, chosen by builders and landscapers for one simple reason: it grows fast, it's cheap, and it puts on a dramatic white bloom every spring that makes a brand-new subdivision look established within a couple of years instead of ten. It did exactly what it was planted to do, and for the first decade or so, most homeowners had no complaints at all.
What nobody selling those saplings mentioned, because it wasn't relevant yet, was what happens once the tree matures past that first decade of good behavior. We didn't start seeing the pattern ourselves until enough of those original plantings had aged into the danger window, and now it's one of the most predictable calls we field across the whole two-county area.
The structural flaw that shows up right on schedule
Bradford pear branches grow out from the trunk at unusually narrow, tight angles, which looks fine on a young tree and even contributes to its neat, symmetrical shape, but creates a genuinely weak structural joint as the limbs thicken with age and add weight faster than the joint itself strengthens. By year ten to fifteen, those narrow branch unions are carrying real weight without the structural strength to hold it under any real stress.
It takes surprisingly little to bring one down at that point - a moderate summer storm, sometimes just straight-line wind without any ice or heavy rain involved at all - to split the whole canopy apart or bring the tree down in one piece across a driveway or fence line. It's such a predictable failure pattern that we can generally guess a stump used to be a Bradford pear before anyone tells us, just from how the trunk sheared apart rather than how it was cut down cleanly.
What the stump grinding itself looks like
Bradford pear wood is moderately dense but not particularly difficult to grind compared to oak or hickory of the same diameter - the bigger factor in how long it takes is usually how the tree came down in the first place. A cleanly cut stump from a planned, deliberate removal grinds like any similar-diameter hardwood would, no real surprises.
A stump from a storm-split tree sometimes has a jagged, uneven top and split wood extending further down into the root flare than a clean saw cut would, which can add a little time to get it level with the surrounding grade once we're actually working it. Either way, root systems on a mature Bradford pear spread wide but not especially deep into the soil, so grinding to a standard 6 to 8 inches below grade is usually enough to clear the growth point and stop any regrowth from the remaining root mass underground.
What to plant instead, if you're replacing one
We're not a landscaping company and we don't sell trees, but the question comes up often enough after a grind that we'll say it here too: if a Bradford pear just failed on your property and you're planning to replace it in roughly the same spot, a lot of Middle Tennessee homeowners are moving toward tulip poplar, red maple, or a flowering species with genuinely better branch structure like a serviceberry, which still blooms well without the same weak-joint problem baked into how it grows.
None of them bloom quite as dramatically and all-at-once as a Bradford pear does every April, but none of them come with a built-in fifteen-year expiration date either, and that trade-off is one most people are glad to make once they've watched their old tree split apart in a single afternoon storm. It's worth asking a local nursery what's doing well in your specific part of town before you commit, since drainage and sun exposure vary even from one side of a subdivision to the other.
The short version
Bradford pear trees planted heavily in Goodlettsville subdivisions during the 2000s are hitting the age where their narrow branch angles fail in ordinary storms. The stumps grind normally, though storm-split trunks can add a little cleanup time versus a clean cut.