What does 45R mean on a tire?
Aspect Ratio): The tire’s sidewall is 45% of the tire’s width, which means the sidewall is about 114 millimeters or just over 4 inches. R (Construction Type): Radial tire, the most common type of tire produced today. Wheel Size/Rim Diameter): Going from edge to edge, the tire’s diameter is 18 inches across. For example, in a tyre marked 225/45 R17, the aspect ratio is 45, which means that the height of the side (profile) of the tyre is 45% of its width, 225 mm. In this case the actual height is 101. The lower the aspect ratio, the lower the profile of the tyre (values of 50, 45 and 40 denote low-profile tyres).Aspect Ratio): The tire’s sidewall is 45% of the tire’s width, which means the sidewall is about 114 millimeters or just over 4 inches. R (Construction Type): Radial tire, the most common type of tire produced today. Wheel Size/Rim Diameter): Going from edge to edge, the tire’s diameter is 18 inches across.This number refers to the section width of the tire, measured in millimeters from sidewall to sidewall; thus, a 255 tire is 10mm wider than a 245 tire. This is the aspect ratio; the sidewall height of the tire as a percentage of its width.The 45-50 number is the aspect ratio of the tire, bigger the number the larger the sidewall. Though in this case, the difference is small, around an inch, but still affects final drive ratio as other have mentioned.
What is the difference between 45R and 45zr tires?
The Z in ZR corresponds to an old label used by manufacturers to indicate that the speed index is higher than V, i. Thus, a ZR tyre has a speed index of V, W, or Y. R indicates that the structure is RADIAL. ZR shown on the sidewall of your tire is a reference to the tire’s speed rating. Historically, the speed rating ZR on a tire meant that the construction of the tire could reach of 150 miles or 240 kilometers per hour. Today, a tire labeled ZR, has more capabilities than before.ZR tires offer superior grip and handling but have a shorter lifespan of about 48,000 miles compared to R tires’ 65,000 miles.
What does R mean on a tire?
R” stands for the construction method of the tire indicating the tire is a radial tire. The following two numbers (16) indicate the diameter of the wheel rim in inches. R19 means the rim diameter is 19, or 482. This makes the total tire diameter 797.
Are zr or r tires better?
ZR tires deliver precision and performance at high velocities, offering unparalleled grip and responsiveness, whereas R tires provide enduring reliability, comfort, and safety for everyday driving conditions. Can I mix ZR and R tires on my vehicle? It’s not recommended to mix ZR and R tires on the same vehicle.