This has been an interesting thread... I have a 1250 GSA and weigh 235 lbs. I agree with Ironsinker in that there is a big difference on my bike between Road and Dynamic. I have left my bike in Dynamic practically since I bought it. So yesterday I changed it to Road and noticed a significant difference. In fact I did not like it as much as I felt like I was not getting enough feedback from the road and the bike handling. However, I could see the benefit of using it on long highway runs etc. and have to remember to change to Road in those instances. I also suggest you ride a different GS just to be sure it was not the particular bike you were riding.