I had them on my Saab before they discontinued them in every size but that one. They were a good tire, they lasted about 8-9000 miles which was pretty good considering how much I abused them.
Highly doubt anyone is truly purchasing tires for their Goblin with high tread wear and long (multiple years) life expectations. Don't know of anyone doing the full time year around commuter car thing. But putting 300+ tread wear tires on a Goblin would be like strapping on a set of ice skates. Tread wear ratings of no more 200 should be as hard a tire as anyone would reasonably want to go with if spirited performance is expected. And if you plan to do any serious racing the tread wear plays a big role, along with the actual tread compound and design, in determining the eligibility of a tire to run in a class and for the given weather and track conditions. We have plenty of Goblin owners who have already posted good information about the brand(s) of tires they've run and their good/bad experiences - possibly better info than anyone's website tire reporting for their BMW or Subaru, which are not Goblins.Former Discount Tire employee here:
I wouldn't lean too heavily on those tread wear ratings. They are only really comparable within the lineup of a single manufacturer. Since every manufacturer tests them on their own, you can't really use that as a spec to compare tires from different brands. You can rely on it more as a ballpark for how long the tires will last, but a 300 from a MAST brand (Michelin, BFGoodrich, etc.) won't really mean much compared to a 300 from a Goodyear brand besides general tread lifespan (i.e. they might both last within 20k miles of each other....maybe).
Traction is much more dependent on the rubber compound itself and the design of the tread. The best thing to do is see what people are reporting for performance characteristics in regards to what you want out of the tire (dry grip, water evacuation, tread life, etc.) and scale that accordingly for a lightweight car like the Goblin.