Anxiety Disorder Due to Medical Condition. Some diseases and Illnesses cause anxiety, including symptoms that directly mimic anxiety disorders. For example, thyroid conditions can cause sudden and extreme anxiety. Lyme disease can also cause panic attacks and anxiety.
SL: Standard Load; tire for normal usage and loads; XL: eXtra Load; a tire that allows a higher inflation pressure than a Standard Load tire, which increases the tire's maximum load; RF: Reinforcedâfor Euro-metric tires, the term 'reinforced' means the same thing as 'Extra Load' RFT: Run-Flat Tire; Tires designed for vehicles without spare tires.
â¦about tires, XL really means extra load. These tires can use higher air pressure to support more weight than a standard tire of the same size. If you want to see whether your current tires are standard or extra load, you can check the service description on the tire's sidewall. An extra load tire willâ¦.