I had the same deal going on with my 03 Ultra, it finally stopped when I got rid of the Dunlops and put a set of Avon's on it. It may have been ALL in my head but I don't think so, the bike tracks straight, doesn't follow grooves in the highway as bad, I can take my hands off the bars at any speed and the bike goes straight, unless like someone said the "crown" in the road is more than normal. Just my experience with MY bike, I do think every bike has its on quirks and what may work for one might not for another. There is a guy somewhere around Atlanta that does frame / suspension set-ups, I would think that there would be someone in your area that specializes in set-ups like these.

 

gabulldog: The aftermarket guy I referred to in my first post told me that people had ended up changing the wheels and the tires to correct the problem. I think you might be on the right track there but I am not going to do it myself. This has been an ongoing problem and is in the system at my dealer so they or HD should correct it. I am going to start the process again as the weather here in the north east is finally showing some riding life. If the bike was older I would expect the problem could be a wear issue but not on a new bike.

Thanks everyone for all the ideas. I will post when I get some sort of answer.

 

My BRAND new '09 RG drifts to the left as well. On long rides I like to take my hands off and let the cruise do it's job...it ain't happenin!!

 

I have an 03 Road King that has had this problem.
When it was brand new, it drifted to the left. Take your hands off the bars, and within 3 seconds you would be in the left lane. Had the dealer check alignment. They said they couldn't find anything wrong. I checked everything I knew to check, and couldn't find the cause either. At about 10,000 miles I replaced the rear tire, but I still had the problem of it pulling left. At about 18,000 miles I replaced both Dunlop tires with Metzlers and the problem went away. I could drive for miles without touching the bars.
Around 30,000 miles I went back to Dunlops on the front and rear and it still tracked straight.
Now I have about 55k on the bike and it just started pulling to the left again. Over the winter I stripped the bike down. I changed the front forks, put new tank and fenders on it and changed the handlebars. Drove it from my garage and it seemed to drive fine, although I didn't specifically test to see if it was pulling to the left. I badly needed a new back tire so I took it to the dealer to have a new back tire put on. Dealer said my rear spoke wheel was out of trueness - so they adjusted if for me before they installed the new tire. Now it pulls to the left worse than it did when it was new.
Now I don't know if it is the rear wheel, rear tire, front forks, or some other item causing the bike to pull to the left. I plan on buying new wheels to see if that corrects the problem.

 

I could ride for days with my hands off the bars on both my old FXRS and my Road Glide and that with the left side bag full of tools, compressor, rain gear etc. It sounds like an alignment problem to me.

 

Just finished a long tour which was a great opportunity to note all sorts of things about my bike, 08 Ultra.

I tried no hands and it drifted left, not badly but very clear. Next day I packed the bike differently - she was heavily laden, and it drifted right, so I satisfied myself that it was an off balanced loading issue. Not to say this is your issue of course

 

My 02 H classic drifted left, so did 03 RKC and now 07 ultra. Changed 03 to hydraulic clutch and it made no difference. It takes maybe a few ounces of pressure of pull on the left to correct drift, but it is still annoying when pulling off/on a glove or what ever requires both hands for a few seconds. I really have to lean a lot to shift enough weight to correct the drift but hanging a knee out works better.

 

once again motor alinment heavy motor it only needs to sit left a little and u got a pull.

 

UPDATE: The owner of my dealership called me today. When I talked with her she said her dad had already filled her in on my problem. What she said next surprised me. She told me that she was familiar with the problem I was having and she new of 3 or 4 other instances where the problem descriptions were the same. She told me everyone had been on RK's and that it ranged from 03's to 08's. (03 to 08 is the same frame) They had worked with those customers to try and solve the problem but had not been able to fix it and that HD corporate was not much help. (Big Surprise There!) She said HD claims that it is their policy that a rider has to maintain 2lbs pressure on the handle bars at all times while riding. Well, I told her, if the bike is running down the road correctly you don't even need that but if you do apply a constant pressure, even an incorrectly aligned bike will stay straight with just 2 lbs as long as you've got it close to center. HD must think people are dumb or it is just an excuse not to have to fix problems. I then said to her, I'd like to see someone from HD hold their arms out straight with just a 2 lb weight in them for 500 miles! I bet they couldn't do it.
My dealer's recommendation was to call HD Corporate and get a file started, which I did. Even the woman who filed my claim agreed that the amount of pull and the amount I had to put my body off center of the bike to keep it straight was not right. Now I have an official claim with HD and my dealer's head technician will call to start the ball rolling. They will have to go over all that has been done already to correct the problem and then see if the factory techs have any other ideas. It's going to be a long process but like I told my dealership's owner, I will pursue this till the end and I will get it fixed. She said most of the other riders just excepted HD answers. The ball will get going on my dealers end when her head tech gets back from vacation on Wednesday. I'll keep everyone posted.

 

Sounds like you have your dealer on your side. That can be good for you.