These are just a few of the reviews found. Bottom line? there is no perfect tire. After "researching" I can say I would never put these on one of my auto's. YMMV but there are way more negative reviews than positive.
Between my daughter's (formerly my) car -- 03 VW Jetta TDI and my Mazda 6 we have owned four sets of these tires thus far -- two sets of regular Douglas and two sets of Douglas Performance. There is little difference between them in price; the primary difference is the Performance series has an asymmetric tread pattern. The regular ones are a little quieter but not available in the 6 Sport's size.
Both vehicles currently have those tires on them.
Both wore out the previous set, each in approximately 50,000 miles.
The previous set on the Jetta were driven in the north (Michigan, to be exact) through half of a winter by my daughter. While I never recommend non-snow tires in "expected and regular" snow she did so and had no problems with traction and generally getting around.
We have had zero early failures, air leaks or other problems. Both sets are rotated on approximately 10,000 mile intervals by myself at the the time of oil changes.
If you read the reviews you will find several people who are complaining about leaks and early failures
but who state they mounted their own tires. WalMart, quite-understandably, will refuse to honor the warranty if there's no evidence that the tires were properly mounted and balanced. To mount tires properly you need equipment that basically nobody has in their own garage; the proper gear to mount tires and seat the beads is decently-heavy machinery and expensive -- unless you're doing it for money there is exactly zero reason for anyone to own it and thus nobody realistically does. This means those people are 99% certain to have used "hillbilly" means to do so (e.g. ether used for beat seating, manual tire irons to lever the beads over the edge of the rims, etc.) Without the proper equipment it's very easy to damage beads, sidewalls or the sealing surfaces of the rim, specifically, while mounting a tire. It's also impossible to properly balance a tire without the correct equipment and an out-of-balance tire will wear unevenly and rapidly.
Tires do not leak air unless they've been holed. Ever. What leaks are the
rims, beads (if damaged) or valve stems. If there is rim damage or the valve stem is bad it will leak. The tire itself has no places it CAN leak unless it has a hole in it or the bead has been damaged, in which case it's damaged and needs to either be repaired (if in the tread area) or replaced (if not.)
Curb damage will trash any tire. You may get away with it and you may not, but sidewall impacts have a good chance of doing severe damage, again, no matter how much money you spend. In addition if you allow a tire to run low on pressure, especially at high speed or in the summer you run the risk of excessive temperature damaging it internally -- and again, that has nothing to do with how much you spend.
The facts are that almost nobody who doesn't have a problem with a "pedestrian" product ever writes a review. If you buy a tire and it wears out in the expected amount of time the odds of you reviewing it approach zero.
Tires don't wear unevenly on their own either. They wear unevenly because they are not running properly on the ground, which is always and every time a problem with the suspension geometry on the vehicle or severe under or over-inflation (if the sides wear first or vice-versa.) Always.
Again there have been eight of these tires between two of my vehicles, in my garage, run from new to worn out and all performed as expected. There are now eight
more; the Jetta has perhaps 20,000 miles on the new set, and I have about 10,000 on mine. I fully expect the Jetta to run about 30,000 more miles on that set (they will be rotated in the next few weeks as the car is coming up on an oil change interval) and I expect mine to last for about another 40,000 miles.
Absent something dramatic happening with either when they wear out there is a near-100% probability I'll buy them again, and likely a near 100% probability Sarah will as well.
You do what you want; I don't care if you want to pay 2-3x as much money for the same outcome.