Old thread, but for purpose of adding info I'll report that I've changed my Michelin Scorcher 31 on my FXDC'11 after just short of 13k mi. I could have gotten maybe 1k mi more on the front, but decided to change anyway. No burnouts, I'd say average riding, not aggressive, not too slow.
Made a point of checking pressure almost every ride, I believe it helped.
Weight is also a factor, and my "only" 160lbs helped as well too. I'm pretty sure heavier folks get less mileage out of their tires.

Remarks on the Scorcher:
- noise/vibration while in low speed turns: worried me at the beginning, got used to after a while, no impact on handling/grip, happy since it was one of the very few abnormal noises/vibrations I could identify the source of on my bike
- grip on wet : rubbish
- grip on dry : ok, never gave me the feeling I could trust the tires to drive aggressively somehow

Now I've just mounted front and back Dunlop 401. Not enough mileage to report anything yet, just getting the slippery layer to wear off for the mo.

 

I ran both Dunlops and Scorchers on my '11 FXDB. Won't be putting Dunlops on my '13 FXDB, and considering the MCII's. Add the centramatic balancers and get a much improved ride on the grooves and tight turns.

 

I have a 09 FXDB that came with michelen schorchers on it,i just replaced the rear tire with 8K mi. on it.

 

I replaced my Dunlops with Michelin Commander 2. I got sick of burning out tires every 6 to 8k. They handle ok, not as well as the Dunlops though. Lets hope they last

 

I'm 260lbs.
My 13 sb Has 14,500 miles on it! As well as the rear tire it came with!
That is with burnouts!
I ride everyday.
Will be buying the same tire soon!
Front tire does vibrate when new. Seems to stop after a few thousand miles.

 

I've got about 8k on my Scorchers, and looking at them I expect to get about 12k out of both, maybe a little more. When that time comes, I'll either replace with the same or go with the Commander IIs. Either way...sticking with Michelin.

 

I've got almost 10k on my Scorchers and have about 3-4/32 left on the front and rear. I'm a big boy and I carry a back pack with my for trips. I have not noticed the buzzing sound, but I can't hear much over the pipes and wind. I'm probably pretty easy on tires, except for locking up the rear twice...

 

The scorcher's get really good mileage,i swaped them out for Meltzer's at 6000 front and back and the rear still had life in it.the front was in great shape.the Meltzer's didn't last very long.Now i'm running there current stock tire's,the Dunlop's.The scorcher's handled a bit better and last longer.Only gripe with the scorcher's is the buzz noise on the turning that the h-d emblem make's that is embedded on the edge or the thread.You get used to it though.

 

New tires going on today--Michelin Commander II front and rear. I got 9500+ out of my stock Scorchers that came stock on my '12 FXDB. Motorcycle Superstore had a sweet deal running for the new ones.

 

i had 11k on my rear stock scorcher with probably 2k left of easy riding. had the commander 2 for all of 1200 miles before ditching for a metzler because of traction problems. had no trust in it after a couple slips in curves, some at low speed. got about 5500 going on my metzler with about 2k life left. ill take stick over life any day.