2001 F4i... lets say on a nice day (around 75-80degs outside), my bike runs at a consistent 182 degrees on the freeway. but when i exit the freeway and start hitting street lights slower traffic, the temp shoots up to about 215-230 at the lights! and even after the freeway, in the neighborhood with about 10 turns to get to the house, it goes from 182 to a consisten 200-210 degrees cruising at about 30mph. whats the deal? ive had the engine coolant drained out countless of times, and even had the radiator fluid changed out. is it the radiator itself? cuz im pretty sure my bike is running fairly hot. help please!