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.
Around age 60 hearing worsens. This type of hearing loss can cause tinnitus. Exposure to Loud Noise-Loud noises from heavy machinery, construction equipment, chain saws and firearms are common causes of hearing loss and can result in tinnitus.