Motorcycle tire performance is critical, and the air pressure of the tire is crucial. Some owner’s manuals or other information lists motorcycle tire air pressures in various units of measurement.

This wasn’t my first attempt to add aftermarket HID lighting to my 2004 BMW K1200LT. Last spring I fell for a “too good to pass up” $129.99 eBay conversion kit sold by CQ Lighting (similar kits can be ...