Nope. Had 114 and now 107. Cant say I've noticed it and I dont willingly do discomfort.

 

I originally had 1600 miles on the FLFBS when I bought it. It was very tight. Now that it’s up to 3100, I do notice it’s breaking in and the vibes are a bit less noticeable. They’re evening out. I’m getting used to them somewhat.
By the way, this thing is a beast! Someone had paid for a lot of accessories and mods and then gave it up. I knew it had the intake and SE slip ons. Maybe it has the SE cam too, I don’t know. It rips. I can’t get to the top of the power. Very comfortable and light Handles great Really a fun bike. love the fat rear tire.

 

Engineering vibration is hard to imagine.Apparently the engineers never rode in the 60's,when You couldn't see out of the mirrors,because they shook so much.You couldn't ride 100 miles without something cracking or falling off. I bought a 2017 because it had less vibration than a twin cam.If a 2021 had no vibration ,I would buy that. I considered a Gold wing because of no vibration,except they are almost as ugly as Indian.

 

Buzzing vibration bad. The Harley shake good.
Moco has lost its way balancing the entire line up.
Catering to the aging “soft” sensitive boomers, and that’s a fact right outta the company playbook

 

Compared to the Evo Heritage Special I rode for 223,000 miles, my '19 Heritage is smooth as all get out. It's all relative I guess.

Then again, even "identical" bikes can vary, depending on production tolerances. Over the 25 years I had my previous bike, it had three different motors. All three had different amounts of vibration-the original motor being the smoothest (mechanics at the dealership use to remark on how smooth it ran). The third motor shook the worst.

 

I have a 2011 Road King Police stage II and I worked for two years at HD dealer in Northern Va, starting in mid 2016. So when the M8 came out and we rode them, I noticed that the vibration on all of them were more than the old King A motor at 50 mph and above. M8 is a pussycat at the stop light, but nags you when you go down the road.....I thought it was a step back in a way. But throttle curve calibration is real aggressive on an M8, so that when you give it the first 1/4 turn, it is about like the twin cam at 1/3 of a turn. At WOT, they even out, but the M8 is not linear through the throttle grip angle, as the twin cam is.

 

Thanks for sharing that. It is consistent with what I'm experiencing.

 

I think he’s right. I’m riding a 20 FLFBS, and after lots of years riding an 08 FLSTF w/ a TC96, for me, it’s totally different. Definitely shifting no sooner than 3k, and can’t use 6th unless I’m at least over 70mph. Took some adjusting for me, for sure!

 

Maybe my nerves are numb from my Sportster, but yeh my M8 is smooth. To the OP, I would suggest riding other M8's preferably same type of bike and have others ride your bike to compare. Maybe you are right and there is something there, excessive vibes possibly, or maybe your somewhat sensitive. It could be relative to the frequencies of the M8 as well. Who knows. I have ridden both of my bikes back to back (Heritage first, then Sportster) and the M8 was like silk, through all the ranges. my Sportster, was much more noticeably shaky. Despite what we think, no two bikes are built exactly the same. .

 

Old thread but....my experience includes owning or riding several M-8's both 107 and 114. Both in Softail and Touring frames. Both with Stock, Stage 1, and Stage 2. I found the Stock 107 in the Touring frame is smoother at all rpms than the Softails with the same engine. That's expected due to rubber vs rigid mounting. Even with dual counterbalancers the Softails get more buzzy with rpm, the 107's less so than the 114's. Adding Stage 1 adds noise but no vibration. Adding Stage 2 adds vibration I assume due to improved cam timing, fuel/ignition mapping, and possibly some piston weight (but that was questioned here before).

In my experience is the 107's are smoother than the 114's in the Softails. That's from riding both within minutes back and forth over the same course and rpm's. In the Touring line I could detect little difference worth noting.