Touring Models Road King, Road King Custom, Road King Classic, Road Glide, Street Glide, Electra Glide, Electra Glide Classic, and Electra Glide Ultra Classic bikes.
Sponsored by:
Sponsored by:

High speed question

Thread Tools
 
Search this Thread
 
Old Mar 24, 2020 | 09:29 PM
  #1  
Pantera99's Avatar
Pantera99
Thread Starter
|
Stellar HDF Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Jun 2018
Posts: 2,233
Likes: 1,208
From: AZ
Default High speed question

So I've been reading on the forum here for years about how mileage tanks on any bike with a fairing over say 70 mph. Well the freeways have been totally clear in Phoenix & cruising at 80-85 mph I've been getting the best gas mileage I've ever seen. 34 mpg, I'm normally closer to 29-31 mpg in traffic. Does anybody have an explanation for this?? & I know everyone will be telling me that they get 45-50 mpg, well I sure dont get anything close to that. PO had her tuned rich & she runs great & not hot at all. 103 ci, 09 ultra classic, SE Slip ons, kuryakyn bahn AC, SE Super Tuner Pro
 
Reply

Popular Reply

 
Mar 25, 2020, 06:47 AM
GalvTexGuy's Avatar
GalvTexGuy
Seasoned HDF Member
Veteran: Navy
10 Year Member
Joined: Apr 2015
Posts: 10,001
Likes: 5,266
Default

I don't check my gas mileage. I hope that helps.
 
Old Mar 25, 2020 | 03:42 AM
  #2  
eighteight's Avatar
eighteight
Seasoned HDF Member
Joined: Oct 2019
Posts: 10,676
Likes: 7,272
From: OH
Default

Originally Posted by Pantera99
I know everyone will be telling me that they get 45-50 mpg,
Windshield, no fairing.
42-45 mpg
 
Reply
Old Mar 25, 2020 | 04:03 AM
  #3  
Andy from Sandy's Avatar
Andy from Sandy
Seasoned HDF Member
Community Influencer
Liked
Top Answer: 3
Top Answer: 5
Joined: Sep 2017
Posts: 12,186
Likes: 4,910
From: England
Default

When you were in traffic was that at a constant speed?

Seems straightforward if you don't have to keep slowing and accelerating your mpg should be better.
 
Reply
Old Mar 25, 2020 | 04:38 AM
  #4  
Temple Brooks's Boyfriend's Avatar
Temple Brooks's Boyfriend
Banned
Joined: Feb 2020
Posts: 435
Likes: 320
From: North Carolina
Default

Considered yourself blessed that you can engage in this scientific study. Here the traffic hasn't slowed one iota.In fact it's increased as dingbats scurry from store to store in search of the elusive roll of toilet paper.
 
Reply
Old Mar 25, 2020 | 06:47 AM
  #5  
GalvTexGuy's Avatar
GalvTexGuy
Seasoned HDF Member
Veteran: Navy
10 Year Member
Joined: Apr 2015
Posts: 10,001
Likes: 5,266
Default

I don't check my gas mileage. I hope that helps.
 
Old Mar 25, 2020 | 06:59 AM
  #6  
Spartanden's Avatar
Spartanden
Seasoned HDF Member
Veteran: Army
15 Year Member
Liked
Community Favorite
Joined: Apr 2008
Posts: 23,399
Likes: 8,509
From: Spartan Country, Michigan
Default

I use an app called Simply Auto and record every gallon of fuel used. I reset odometer to zero, and track my mpg.... I do know that I get far less driving around town and local than when I go on trips. The constant start, stops, and speed variations around town do affect fuel mileage. No idea why you get that low other than it's running a bit rich. I average low 40's around town and mid to upper 40's (and occasionally 50's+) on trips. If you run this app for couple months, you should get a good idea of your fuel usage.
 
Reply
Old Mar 25, 2020 | 07:09 AM
  #7  
Bowhunter61's Avatar
Bowhunter61
Road Warrior
15 Year Member
Photogenic
Liked
Top Answer: 1
Joined: Feb 2009
Posts: 1,274
Likes: 130
From: Now Western TN
Default

Originally Posted by Pantera99
So I've been reading on the forum here for years about how mileage tanks on any bike with a fairing over say 70 mph. Well the freeways have been totally clear in Phoenix & cruising at 80-85 mph I've been getting the best gas mileage I've ever seen. 34 mpg, I'm normally closer to 29-31 mpg in traffic. Does anybody have an explanation for this?? & I know everyone will be telling me that they get 45-50 mpg, well I sure dont get anything close to that. PO had her tuned rich & she runs great & not hot at all. 103 ci, 09 ultra classic, SE Slip ons, kuryakyn bahn AC, SE Super Tuner Pro
I am willing to bet if you did that same ride at on the freeways at 70, you would be getting close to 40mpg
 
Reply
Old Mar 25, 2020 | 07:15 AM
  #8  
GOV5's Avatar
GOV5
Stellar HDF Member
Joined: Mar 2017
Posts: 3,174
Likes: 1,465
From: Charleston, SC
Default

Originally Posted by Pantera99
So I've been reading on the forum here for years about how mileage tanks on any bike with a fairing over say 70 mph. Well the freeways have been totally clear in Phoenix & cruising at 80-85 mph I've been getting the best gas mileage I've ever seen. 34 mpg, I'm normally closer to 29-31 mpg in traffic. Does anybody have an explanation for this?? & I know everyone will be telling me that they get 45-50 mpg, well I sure dont get anything close to that. PO had her tuned rich & she runs great & not hot at all. 103 ci, 09 ultra classic, SE Slip ons, kuryakyn bahn AC, SE Super Tuner Pro
I have a stock 2015 Ultra Classic. I get about 32-35mpg riding around the area I live, so that includes some Interstate and city roads, but mostly city. If I took a trip to Jacksonville, FL from Charleston, SC, I would get in the low to mid 40s. I have NEVER hit 50 mpg on ANY motorcycle I've owned.
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-1

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-2

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-4

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-5

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-6

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-7

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-8

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
story-9

Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

 Verdad Gallardo
Old Mar 25, 2020 | 07:28 AM
  #9  
grbrown's Avatar
grbrown
Club Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Jun 2007
Posts: 45,429
Likes: 2,897
From: Bedford UK
Wink

May depend on any wind you had during that ride. Heading into a strong headwind, at speed, really knocks my fuel consumption, whereas with a good following wind she just Glides along!
 
Reply
Old Mar 25, 2020 | 07:37 AM
  #10  
smitty901's Avatar
smitty901
Seasoned HDF Member
Veteran: Army
15 Year Member
Liked
Community Favorite
Joined: Feb 2008
Posts: 22,998
Likes: 11,439
Default

If you want fuel mileage buy a livewire or a moped . You won't get any better mileage without a faring. Tugging the sidecar loaded and staying with highway traffic speeds 35 MPG. With sidecar off 42 MPG. Getting silly rinding like it was stolen 35 mpg or less.
 

Last edited by smitty901; Mar 25, 2020 at 07:39 AM.
Reply



All times are GMT -5. The time now is 09:14 AM.

story-0
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-1
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-2
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-3
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-4
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-5
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-6
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-7
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-8
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE