With switching wheels the weight loss is felt in a couple different ways: Overall weight On a bike that only weighs, let's say, 28 lbs (12,700g) a loss of .9 lbs (410g) is about 3% savings.
Sinus infection or lesions can lead to headaches with tinnitus. Sinus related conditions leading to inflammation of the mucus membrane can also manifest typical ringing sounds in the ear or the head. These sinus conditions can bring on a generalized headache and sounds in the ear, sometimes followed by fever as well.
Head and Neck Injuries Cause Tinnitus: Part One. The most common cause of tinnitus is exposure to noise, with approximately 70% of people with tinnitus having noise-induced hearing loss. Somewhat surprisingly, the second most common cause of tinnitus is head and neck injuries.