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No issues like that with mine. I feel there is about the same weather protection as I had on my Burgman 650. No instability at any speed either... but I've only had it up to just over 85 mph so far.
I do keep the tire psi a little higher than the manual calls for. Instead of 34F/38R I keep the psi at an indicated 37F/39R on the TPMS. I also found the TPMS display is close to 3 psi low compared to a few pencil gauges I have. Normally I  like to keep my motorcycle and super scooter tire psi at 40F/42R per the pencil gauges. I find tires do last a bit longer in my experience doing this and I feel a more solid connection to the road as well. I used to keep the recommended psi but about 20 years ago followed the advice of many riders in my riding groups.

Hey Bob,

Yes, disconnected is maybe the word i was looking:) It feels like it disconnects from the road.
Oh I’ve had it only up to 75 maybe. Not even planning to go above 80:)

Ben

My last tank average said 63.4mpg. Way off!
I refilled at exactly 150 miles, the red E started blinking, 3.2 gallons regular 87.
Average 46.8mpg

Ben

Just an update on the mpg. Last bar started blinking on 104 miles Trip A resettled on refueling. Average mpg shows 58.5.
I will ride until I get the blinking E.
As Bob mentioned it will probably get better but let’s see:)
I wouldn’t mind the low mph but refueling and getting the blinking light at 100 miles is terrible.
I need 6 gallons tank:)

Ben

As mentioned, you don't need more than 87 octane in the USA.
I used to own a CTX1300. That uses the same engine, basically, as the ST1300. The ST recommends 93 octane but the CTX recommends 87 octane. The difference is the compression ratio... and maybe a few other minor details.

Dr Pulley does make sliders and rollers that will work. Both heavier and lighter. Heavier rollers will decrease the RPM for the same speed. But why change it. The load to the rear wheel will temper any benefit in that so you might consider changing the contra spring as well. There is some information on that over on the ADV Riders forum in the Scooter sub forum. Look for the threads about the AK 550. There are a few owners who changed their rollers to 1-2 grams different to get more out of the CVT but I think I recall they also changed the contra spring. I like the way it is but that's just me as you can tell.

Perfect Bob, thanks.
I will check dr Pulley rollers. I will try first with the rollers than spring if needed. I just spent 13k for this bike:) I like the rpms to be lower and the bike quite. As for the gas, next tank will be 87.
Thanks for your advise.

Every new bike I've bought improved the mpg as more miles accumulated... leveling off somewhere between 6000-8000 miles.
I'm not getting over 60 mpg. I have a time or two but it's rare. I was expecting to be below 50 mpg when I pulled my Uni-Go trailer but I found that with such a light and aerodynamic trailer I was still getting between 52-57 mpg. Normally (without the trailer in tow) I get 54-58 mpg. For me the last red bar starts to flash around 145-160 miles. I figure I have about another 40 miles before the red bar goes away. But then the red "E" will start to flash for another 12-15 miles before truly empty. I have seen the flashing red "E" twice now but only once did I need 3.7 gallons to fill it. I don't normally let it get that low, not good for the fuel pump if it goes dry. But just know that there is a little bit of reserve left after the red bar stops flashing. I reset trip meter A every time I fill the tank and use that information along with what the gas gauge is showing to know when to fill up.

When I initially bought my AK and started riding it home (400 miles away) I wasn't familiar with the gas gauge so filled up earlier than I needed to. But still I saw the red bar start to flash at between 80-100 miles. It has vastly improved since then. I currently have over 15,000 miles on mine now.

BTW- DO NOT pay any attention to the computer generated mpg showing on the dash. I have yet to own any bike with that display that is anywhere close to accurate. My AK will show 66-75 mpg when the actual calculated value is 54-59 mpg. I just ignore that dash reading since it is SO far off.

Heat helps most bike engines. As the temp goes up so does the mpg.

BTW- After my last trip pulling the trailer I filled up and calculated the last leg home of that trip was 57.7 mpg. That was with the Uni-Go trailer in tow the entire tank. I rode 158.0 miles and filled up with 2.735 gallons. The red bar had JUST started to flash about a half mile before the gas station. I more recently filled the tank but didn't really need to. I only rode 103.8 miles and filled up with 1.912 gallons for 54.2 mpg. Only a few of those miles were with the trailer (I use the trailer for grocery shopping trips).

A LOT of factors come into play for what mpg anyone gets on any motorcycle/scooter. More so than with cars or SUVs. Air temps, road surfaces, riding style, type of fuel. This bike does not use premium fuel. 87 octane is what it calls for so it's a waste to pay more for any different. The manuals are confusing about that since they are showing the European or SE Asia version which is either MON or RON numbers. But in the USA we use PON (RON + MON /2)... you'll see that forumla on the pump label. 90-91 octane RON in Europe is the same as 87 PON here. Go by the label in the storage box. This is mine.
https://photos.app.goo.gl/cdwfHNj8ivZRTHCR7

Thanks for your response Bob.
Yes, hopefully it will go up and normalize after some time.
I use 93 octane gas. I will check that label.
I use to have the BMW c650 GT for almost 10 years and 95 octane was recommended. I was always using 93 because you can’t find 95 at NYC gas stations.
I was getting 36-7 mpg with the BMW and the computer was always accurate.
That’s why i got confused a bit:))

Do you by any chance know if there are a bit heavier roller sets for the oem variatot?
I found that the weight is 17gr and I would put 19 to lower the rpms a little bit.
I know everybody tries to make them faster and more aggressive but I’m opposite:) I like smoother and comfortable ride.

Thanks

Hey Guys,

I just got the Ak 550. I have 180 miles on it and I’m on the third tank.
The computer says average of 58mpg but it looks like it’s way off.

Thanks