Top Speed M8

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Jun 22, 2018 | 04:43 PM

#11

Prot

Club Member

Joined: Aug 2008

Posts: 22,863

Likes: 17,919

From: Lafayette, Louisiana

Quote:

Originally Posted by HarleyPot

Are you really that delicate? He's only stating facts, if you're doing 100 in the fast lane on the bahn you have a death wish. Thats the equivalent of doing 30 on a normal motorway. No one is going to come in here and say they got 140 out of an M8 even with all the mods you can think of.

Quote:

Originally Posted by xyzzyxyzzy

H-D on the autobahn? Seriously? Well OK, maybe if you stay in the right lane. I would choose my left lane time on a H-D very carefully. Closure rates in the left lane can be a real sobering experience and a H-D, even at full flail, will be nothing more than, as my son likes to say, "a rolling pylon".

Most people on this forum are not in Europe. Interstate speed limit in most places is 70-80 mph. Most people do not usually exceed 100 mph on the interstate.

Jun 22, 2018 | 10:24 PM

#12

Peter Quinn

Road Captain

Joined: Sep 2012

Posts: 609

Likes: 159

From: Allover

With the T C and M 8 Top speed is only achievable in 5th gear.With full Stage 111 and a tune with the,now discontinued,
Pro Race tuner I have achieved 122 mph on my 17 SGS.This reading was off my independantly mounted Garmin Zumo.
The Boom screen showed a reading of 126 as it is not true GPS.Its reading comes off the gearbox speed sensor,so it over reads just like all Harley's.
At this speed the 09 design Frame is not up to the job.It becomes twitchy and unstable.
My next M8 will have a full balance engine and the computer design frame bolted to the engine,like my Honda.
Or for that matter,my Softail.!

Jun 23, 2018 | 03:28 AM

#13

HarleyPot

Novice

Joined: Jun 2018

Posts: 24

Likes: 4

From: England

Worth noting you should be checking higher speeds like that with a GPS. Bodyweight at those speeds will make all the difference, plushow streamlined the bike is. Saddlebags will kill speed off as will a big windshield

Jun 23, 2018 | 04:45 AM

#14

FLSTFI Dave

Seasoned HDF Member

Joined: Nov 2016

Posts: 6,088

Likes: 6,446

From: East TN

Quote:

Originally Posted by Kawickrice

My 17 Limited M8 is governed at 107MPH by the factory. Need a tuner to disable it

Exactly all M8 bikes are governed to 107 from the factory. That includes the 107, the 114 and the 117. The EPA approved HD tuner will not remove the governor. The TTS will and a few others will.

Jun 23, 2018 | 06:07 AM

#15

Dan D.

Outstanding HDF Member

Joined: Aug 2017

Posts: 2,816

Likes: 1,718

From: Jacksonville, FL

120+, just to say I did it. I much prefer 75 though.

Jun 23, 2018 | 06:28 AM

#16

tonyd2017

Thread Starter

Road Master

Joined: Apr 2018

Posts: 986

Likes: 442

From: Sivier County Tennessee

This was useful, I have an extended warranty and will not mess with the tuner. It is all about the torque and the two up stability fully loaded, it does that just fine.

Jun 23, 2018 | 08:37 AM

#17

mongomark

Road Master

Joined: Dec 2009

Posts: 783

Likes: 66

From: Sacramento

I have an 18 Heritage Anniversary 114 with a proper stage 1 using a Powervision tuner, Tab slip ons with torque cones added and I hit an indicated 125 mph. It was a little twitchy at that speed I think due to the windshield and a crosswind. My 07 Street Glide with a stage 2 would max out at about 119 and that took more roadway to attain than my 18 Heritage. Bone stock, the Heritage ran into the speed limiter at about 107. This happened on a long onramp.

Jun 23, 2018 | 03:37 PM

#18

Smite

Advanced

Joined: Aug 2017

Posts: 76

Likes: 7

From: CA

I was cruising at 85 opened her up to get to a clearing in traffic ahead, looked down and was going 107 and still pulling well. Fast enough for me so I rolled off but I was surprised how solid the bike felt at that speed. '18 FXBB