Put Shinko 712 on front of the Super Glide.

That is amazing mileage, if I get more than 6000k out of a tyre I'm pretty happy (though I replace them before they get to the wear indicators), I have been using Night Dragons that seem to perform well and seem well priced, I see Metzler have a new tyre called Cruise-tech coming out also which might be worth a try

Sponge Boy, I think 19,000 20,000 about normal for a H rated tyre on front if you keep it about 38 psi & check pressure. if it is a V Rated they normally wear quicker. Rear tyres wear quicker if your motor putting out good torque. I had new Metzeler V rated on a stock 03 sporty up in Cairns FNQ road it back to south coast NSW rear tyre almost gone front one lasted about 10,000, now have Avon H rated on rear Harley Davidson Dunny on front( all I could get at the time ) I don't like the feel of the dunny but the Avon feels ok, still need to sort my bike ( need fork brace & steering damper & spoke wheels need re tentioning )

Agree Krash i get around  17-19k from American Dunlop Elite on my street glide  on the front running mostly two up fully loaded and being melted somewhat by heat on Qld roads. Tyre pressure is a must do if you want big klm out of the heavy jiggers

Pretty sure my wideglides front recommended was 34, the slim is 36, completely different tyres for sure, maybe that's a reason for variation rodders?

Metz 880’s about 14k from the front and 8k from the back, pretty consistent 

Rodders, probably depends on how much weight on the bike. But normally a bike manufacturer states, lower pressure than a tyre manufacturer. I check tyre temps when I pull up to refuel, that's how I gauge what pressure suits me. plus I go by feel too. never had a problem .

Not necessary so... Higher pressures maintain tyre sectional shape. Quite often the contact patch in lower psi running can be distorted to an area lower than what the higher psi would allow. 

Anyone use the 4 psi rule ?

Good one T4, saves people asking what is the 4 psi rule.

Shinko - used to be Shinko sure slip? I regularly get 30k out of my dunlop elites on the front of a CVO ultra and 18k and maybe slightly more out of the rears. Its all about tyre pressure and how you use your brakes. And I do have a few more ponies than messers Harley and Davidson designed and enjoy letting them out.