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Old 01-07-2009, 09:37 AM   #16
Bucko
In a parallel world
 
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Joined: Mar 2004
Location: South Coast, CA
Oddometer: 817
The BMW web site now says "Estimated 54.2* mpg," with the * addressing the mileage as measured during the Federal Test Procedure for EPA exhaust certification.

I want Wardman's bike. He's shorter and heavier than me, but gets better mileage. Maybe I should slouch a bit.
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Old 01-07-2009, 10:17 AM   #17
dwayne
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Location: wheelie in purgatory, Calgary
Oddometer: 3,312
Quote:
Originally Posted by Bayner
Karel, is your bike mapped for 89 octane? Anybody in North America done this?
north american 89 equals about 91 europen. the diffrence is in the meaurment method. you should not need a remap. be sure to read the letters after your recommended octane number in your manual, and compare them to what is on the pump.

Most european countries use RON, but NA averages the RON and the MON to come up with the number you see on the pump


http://en.wikipedia.org/wiki/Octane_rating
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Old 01-07-2009, 01:52 PM   #18
Bayner
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I just read the section on fuel again in the owners manual and it states recommend fuel as 95 RON. This translates to 91 (R+M)/2 which is mid grade on most Canadain pumps in my experience. (Just throwing that out there...)
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Old 01-07-2009, 02:21 PM   #19
dwayne
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Quote:
Originally Posted by Bayner
I just read the section on fuel again in the owners manual and it states recommend fuel as 95 RON. This translates to 91 (R+M)/2 which is mid grade on most Canadain pumps in my experience. (Just throwing that out there...)

oops made an assumtion. I assumed the number listed in the manual was a RON number, like the old 650 had. Wierd that an ADV bike is speced to run on anything other than 87/89 grade.
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Old 01-07-2009, 05:33 PM   #20
M N B
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Location: San Jose, CA
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Quote:
Originally Posted by dwayne
oops made an assumtion. I assumed the number listed in the manual was a RON number, like the old 650 had. Wierd that an ADV bike is speced to run on anything other than 87/89 grade.
I know, especially considering premium grade gas can be hard to find in the remote places the bike is designed to go. Not sure what BMW was thinking there...
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Old 01-08-2009, 08:15 AM   #21
Bucko
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They were thinking that you'd get the remap done or carry octane booster if you wanted to travel to places where there's no premium gas, and that you'd be thankful they kept the price of the bike down by not fitting a knock sensor. I'm not sure they were thinking really well...
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Old 03-09-2009, 06:01 PM   #22
RobStar
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Joined: Feb 2009
Location: Las Vegas Baby!
Oddometer: 433
F800GS Gas Mileage: What Ya Gettin'?

The Variables:
Units: Miles per US gallons
Odometer: Exactly 509 miles
Rider: 5'11" 175 lbs
Luggage: Jesse Odyssey II sides only loaded with guns, ammo and day kit for 75% of the miles
Windscreen: Stock
Exhaust: Stock
Misc: Adv-Spec crash bars and bash guard
Riding Conditions: Mix of highway at 65-75 mph +/-, twisty back roads, six crossings over the Spring Mountain Range, many short trips and errands, three 100+ mile days. Extremely windy conditions!
Results:
Over the course of the first 509 miles I've averaged only 30.3 miles per gallon.

I also found out yesterday coming back from the Death Valley area that 0 miles left on the OBC, really means 0 miles left! Like a switch, the engine cut off when the display moved to zero. Fortunately, I had decided to turn left to Pahrump for fuel rather than risk heading to Las Vegas on Hwy 160. By the graces of good luck or karma the engine quit 200 yards from the Shell station and I coasted into the pumps with about 15 feet to spare!

I'm a new rider and the dealer told me to ride it like I stole it during the break-in period so that is exactly what I've been doing; high rpms and no chug-a-lugging. Maybe I twisted the throttle up to 85-90 mph for a few seconds... maybe

30 mpg isn't so great and I suspect it is reflective of the break-in and hard riding. None-the-less, it's still almost 3x better than the 11.5 mpg average on my Hummer.

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Old 03-09-2009, 06:15 PM   #23
The Griz
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The OBC tells me I'm getting around 45mpg. But it's still too early to tell. I'll post again when I have harder long distance evidence. It's still not Spring yet here in Minnesnowta.
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Old 03-09-2009, 06:56 PM   #24
dholaday
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Location: White Salmon, WA
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Wind can make a heck of a difference. I've seen my mileage - on an RT - vary by 20+ mpg depending on if I had a head- or tail-wind. And an RT is more aerodynamic than the GS; my guess is that the cd of a GS+Rider is close to .9: only marginally better than pushing a steel plate thru the air


Another good argument for carrying a couple of Sigg bottles full of fuel. Glad you made it to the Shell station.
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Old 03-09-2009, 09:41 PM   #25
RobStar
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Location: Las Vegas Baby!
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Quote:
Originally Posted by dholaday
Wind can make a heck of a difference.... an RT is more aerodynamic than the GS; my guess is that the cd of a GS+Rider is close to .9: only marginally better than pushing a steel plate thru the air

Another good argument for carrying a couple of Sigg bottles full of fuel. Glad you made it to the Shell station.
Agreed, I'm completely upright on the GS, the Jesse bags are boxy and the last 4-5 days have been winds at 20-25 mph with gusts in the 30+ range. The week before was very windy too. There's no hiding from the wind here, plus when you get into the canyons it's crazy coming from every direction.

REI and Sigg bottles are on my list for tomorrow...

** Sigg no longer makes fuel bottles - I bought two 30 oz MSR fuel bottles w/o the child-resistant caps today at REI for $15 each **

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Old 03-09-2009, 10:38 PM   #26
kkug
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Location: Escondido Ca .USA
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I run her out yesterday at 167 miles on the GPS.
I thought I got a good fill at the station. Was doing some off roading-first gear-sand work. Kinda sucked-lucky I was riding with some one. That tankfull was about 42 MPG.
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Old 03-14-2009, 11:18 PM   #27
The Griz
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For MPG today, my OBC was throwing numbers pretty consistent with what BMW claims. 60 mpg or so at 55 mph, and 45 mpg or so at 70 mph. However, I'm a bit concerned with the the number it was posting for "miles until fill." With a full tank of gas it was saying 134 miles until fill needed. weird. Shouldn't it say more like 210 or 220 miles? Thoughts?
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Old 03-14-2009, 11:54 PM   #28
Lost Rider
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Location: Ventura County, California Republic
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In the last 5 weeks or 8,000+ miles I've noted the following MPG while in full touring dress:

60 MPH casual straight line ride, don't remember where exactly, but when I needed to stretch my tank this was my optimum speed = 62 MPG

60MPH spirited riding on tarmac with twisties ( PCH for example) = 46MPG

78 MPH interstate riding (that not get a ticket but make time through the midwest speed) = 43MPG

20 - 70 MPH spirited dirt/gravel road riding, baja, DV, moab, etc. = 37MPG

110 MPH+ hauling ass for hours in the desert riding = 28 MPG

After a few weeks I stopped keeping tabs the old fashioned way because the computer was always real close for the MPG. When the gas light comes on you have 1 gallon left, so how you're riding dictates how far you'll get...
stretch it 60 miles or get to the gas station 25 miles away in less than 15 minutes... choose wisely.
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Old 03-15-2009, 12:21 AM   #29
The Griz
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Location: Minnesota
Oddometer: 3,779
Quote:
Originally Posted by ChiTown
In the last 5 weeks or 8,000+ miles I've noted the following MPG while in full touring dress:

60 MPH casual straight line ride, don't remember where exactly, but when I needed to stretch my tank this was my optimum speed = 62 MPG

60MPH spirited riding on tarmac with twisties ( PCH for example) = 46MPG

78 MPH interstate riding (that not get a ticket but make time through the midwest speed) = 43MPG

20 - 70 MPH spirited dirt/gravel road riding, baja, DV, moab, etc. = 37MPG

110 MPH+ hauling ass for hours in the desert riding = 28 MPG

After a few weeks I stopped keeping tabs the old fashioned way because the computer was always real close for the MPG. When the gas light comes on you have 1 gallon left, so how you're riding dictates how far you'll get...
stretch it 60 miles or get to the gas station 25 miles away in less than 15 minutes... choose wisely.
But what explains the low "miles to fill needed" reading?
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Old 03-15-2009, 12:48 AM   #30
Calibob
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Joined: Mar 2009
Location: So Cal
Oddometer: 22
Quote:
Originally Posted by The Griz
For MPG today, my OBC was throwing numbers pretty consistent with what BMW claims. 60 mpg or so at 55 mph, and 45 mpg or so at 70 mph. However, I'm a bit concerned with the the number it was posting for "miles until fill." With a full tank of gas it was saying 134 miles until fill needed. weird. Shouldn't it say more like 210 or 220 miles? Thoughts?
Same here... When I fill up, my OBC shows a "greater than" > symbol before the projected miles to refill. I read somewhere that this is normal and the OBC won't start counting down until your below the "greater than" predicted mileage.
2100 miles and I have been averaging about 56mpg
75-80 mph highway...
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