Uniform Tire Quality Grading
Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width.
For example:
See also:
Not quite midsize
Like most mid-size entry-level luxury cars, the CTS has a fairly restrictive
cabin. Although I can live with that, the hard front and very tight rear seats
put a damper on the experience. Sure, it ...
Recommended Fuel
Use regular unleaded gasoline with a posted octane rating of 87 or higher.
If the octane rating is less than 87, an audible knocking noise, commonly
referred to as spark knock, might be heard when d ...
Tire Designations
Tire Size
The following is an example of a typical passenger vehicle tire size.
(A) Passenger (P—Metric) Tire:
The United States version of a metric tire sizing system.
The letter P as ...