Treadwear

The Treadwear grade is a comparative rating, based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 would wear one and one-half times as well on the government course as a tire graded 100. The relative performance of tires depends upon the actual conditions of their use, however, and may depart significantly from the norm due to variations in driving habits, service practices, and differences in road characteristics and climate.

    See also:

    Sunshade Operation
    The sunshade can be opened manually. However, the sunshade will open automatically as the sunroof opens. NOTE: The sunshade cannot be closed if the sunroof is open. ...

    Tires
    Examine tires for excessive tread wear and uneven wear patterns. Check for stones, nails, glass, or other objects lodged in the tread or sidewall. Inspect the tread for cuts and cracks. Inspect ...

    300 in the Market
    Full-size sedans occupy an interesting spot in the market. If you can take a big hit in cabin and trunk room, similar money buys an entry-level luxury car. It may not be lavishly optioned, but you ...