We have a local tt here in Sonoma County. Roads are bumpy on some portions, and using Michelin Pro race tires inflated to 120psi made for a very unstable platform, now using 109psi which is much better. We use 12-23 gearing. Otherwise set-up standard, drop bars 4 both of us, Rolf wheels on a Co-Motion Supremo. Weve done the stage race in Oregon twice when it was sponsored by Burley, lots o fun. Combined age class, low key compared to the higher catagory classes.