So I am going insane. I am a new rider and had my bike for about 3 months now and absolutely loving it. I use it to commute everyday and so this week it has been subject to the wet weather in Brisbane. Problem lies in now that there is a nasty squeak coming from what I believe to be the rear wheel. I ride a 2002 Kawasaki ER5. I only notice it as I hit about 50km/h and intensifies as I go faster. I regularly lube the chain and have done since I have had the bike so I don’t believe it is coming from there as I have done this since riding in the rain. It is kinda hard to tell with my helmet on but it sounds as if it is coming from the right side of the rear wheel. With my limited knowledge of bikes I am not sure what it is or what I should try to fix it. Please help, All advice welcome.