2007 Suzuki Forenza Owner's Manual - Page 174

SERVICE AND APPEARANCE CARE and the maximum pressure needed to support that load. See "Compact Spare Tire" in this section and "Loading Your Vehicle" in section 4. E. Tire Inflation Pressure The temporary use tire or compact spare tire should be inflated to 60 psi (420 kPa). For more information on tire pressure and inflation, see "Tire Inflation Pressure" in this section. F. Tire Size A combination of letters and numbers defining a tire's width, height, aspect ratio, construction type and service description. The letter "T" as the first character in the tire size means the tire is for temporary use only. tire's sidewall is 70% as high as it is wide. D. Construction Code A letter code is used to indicate the type of ply construction in the tire. The letter "R" means radial ply construction, the letter "D" means diagonal or bias ply construction; and the letter "B" means belted-bias ply construction. E. Rim Diameter Diameter of the wheel in inches. F. Service Description These characters represent the load range and the speed rating of a tire. The load range represents the load carrying capacity a tire is certified to carry. The speed rating is the maximum speed a tire is certified to carry a load. Speed ratings range from "A" to "Z". The following illustration shows an example of a typical passenger car tire size. A. Tire Type This letter code indicates the primary intended use of the tire. The "P" as the first character in the tire size means a passenger vehicle tire engineered to standards set by the U.S. Tire and Rim Association. B. Tire Width The three-digit number indicates the tire section width in millimeters from sidewall to sidewall. C. Aspect Ratio A two-digit number that indicates the tire height-to-width measurements. For example, if the tire size aspect ratio is "70", as shown in item "C" of the illustration, it would mean that the Tire Size WARNING Your SUZUKI is equipped with tires which are all the same type and size. This is important to ensure proper steering and handling of the vehicle. Never mix tires of different size or type on the four wheels of your vehicle. Mixing tires could cause you to lose control while driving which may lead to an accident. The size and type of tires used should be only those approved by SUZUKI Motor Corporation as standard or optional equipment for your vehicle. 5-30