Dunlops are the tires for stock Ultras here in the USA. 408F front, 407 Rear. I have a 2010 Limited and got 32,000 on front and 25,000 miles on rear.
Not to burst any bubbles, but sometimes it's not the tire, or how hard someone rides... The pavement system here in Alaska is pretty unforgiving when it comes to tire mileage, whether it be on a motorcycle or in a cage. Even my Tahoe only gets about 25,000mi on what is supposed to be 40,000mi tires.
The best mileage I got from my Wide Glide was only 8,900mi (factory OEM replacements) on the rear but still had good tread on the front, so maybe another 1,000 or so. Three sets of tires in three years and only averaged 7,900 +/- miles... and I always changed my front tires regardless of how much tread was left.
Rough roads seem to be all over, not just Alaska, and the pavement mix is critical to some degree when it comes to the abrasiveness against the rubber. The mixes here in Alaska have to account for some pretty extreme temperature differentials and precipitation of all kinds. The smallest crack one day, is an axle breaker the next.
I'm currently sitting at 6,500mi on my new CVO Ultra and hope to get at least another 2,000mi before I do a change out for a haul down to Texas next Summer. While riding on the Lower 48 highway system, I should be able to get down there and back before having to change out again.
Tire Pressure and Balance are very important to higher mileage than possibly one manufacture over another, unless the tire is specifically designed for higher mileage... but then you may notice a decline in performance too...
Just my two cents, as today, that's about all I have to offer.
