My rear wears faster as well. About 5,000 miles ago I replaced my rear, and I'd say I've got another 1,000 to go on the current front. Both tires were replaced at the same time last time.
Bike has 20,000 miles on it, it's on rear number 3, front number 2. It's about to have front number 3, but then shortly after it'll be on rear number 4.
Others report the front wearing faster, I suspect that might be due to not accelerating hard, and using the clutch more often when stopping and using the front brake almost exclusively. None of these are bad or anything, but, they are going to accelerate wear to the front and reduce wear on the rear. Those of us that like to open it up every now and then, engine brake, and frequently use the rear brake in conjunction with the front, are going to go through rear tires quicker and save some wear on the front!
That's the thing about motorcycles, every single one is different and every rider is different! Average MPG down in the 900 section seems to range from 35 mpg to 60 mpg. I get 45~55mpg two up with a tour pak, windshield and hard bags, while others struggle to get above 40mpg solo. Everyone rides differently and how you ride is going to affect your bike differently than how I ride!
"8 But God demonstrates his own love for us in this: While we were still sinners, Christ died for us."
Romans 5:8 (NIV)
2014 Kawasaki Vulcan 1700 Vaquero ABS SE
iPod Connector Kit, Kuryakyn Highway Pegs, Mustang Touring Seat, Marvella's Hitch, Kuryakyn Trailer Wiring Kit, Haul-Master Tag-a-Long Cargo Trailer
2011 Honda Shadow Aero 750 (Wife's)
Memphis shades quick-release windshield, OEM Solo Seat, Mustang Fender Bib, Chrome Solo Luggage Rack
Past: 2006 Vulcan 900 Classic LT