I weigh 230 lbs, and live in New Mexico. On the flat, I can barely get the bike up to 75 mph at full throttle, but the altitude here is over 5000 ft. I am sure the altitude has an effect on the speed, but a smaller rider might get somewhat better performance. I trailered my motorcycle up to Rocky Mountain National Park, rode up over 11,800 elevation. On the ride I found at higher rpm\´s the engine intermittently sputters above 8,000 feet altitude. By leaning the fuel ratio slightly on high altiude rides corrected the problem. 
We invite you to introduce yourself by a few sentences if you are new to
this discussion group. Enter your e-mail to join the forum and get notifcations on new messages. Or post your question,
answer or comment as a guest. We have just improved this discussion forum and expect the number of users to increase.
More 2005 Yamaha XT 225 information
Our discussion groups are intended for short messages. We also welcome more extensive motorcycle reviews.
Bikez also recommends that you check out the technical
data and the riders' rating for the 05 Yamaha XT 225.
You can also rate it yourself. Use our efficient motorcycle
classifieds to sell or
buy
this bike. Your motorbike gets a high quality presentation. Ads are free.