leftyour.blogg.se - Wheel tire size comparison

Wheel tire size comparison full#
Wheel tire size comparison plus#

Switching to different tire sizes can only be done in compliance with all legal requirements and regulations – plus the recommendations of the vehicle, wheel, and tire manufacturers. Last but not least, the car will accelerate slower. There will also be a slight increase in top speed, and the speedometer will no longer be accurate. That means the car body will be higher off the ground. If the combined wheel and tire diameter aren’t correctly matched, there may be drastic differences in ride height and speedometer readings.įor example, fitting 17-inch-diameter wheels to a car that is designed to have 14-inch-diameter wheels will change the ride height.

Make your tire size selection in strict accordance with vehicle documents and tire manufacturer recommendations. It must correspond to the information provided in the vehicle documents.

Wheel tire size comparison full#

Together, the load index and speed index make up the full service description for a passenger car tire. Compatibility is determined according to its outer dimensions – diameter/rolling circumference and width – and labeled as a standardized tire size indicator on the sidewall.Īlso, the size must comply with the vehicle’s requirements regarding speed rating and load range. The documentation supplied with your vehicle outlines the recommended tire sizes for your car.

Compliant with Department of Transportation motor vehicle safety standards.

Mercedes Original Equipment key (serves as an example: find more OE keys here).

Speed index (the maximum speed of the tire).

Load index (the maximum load capacity of the tire).

Percentage height of the sidewall in relation to the width.

or Metric comparisons.What do all these letters and numbers mean? Here’s all the information on the tire sidewall quickly decoded: It is an adjustment faster or slower from the original speed. Adjusted Speedometer Reading is what speed the car will need to go if using the after market tires, to be traveling at the same speed if the car had the original tires on. Tires button in the top calculator or Compare Metric Tires in the lower calculator to have the selected tire sizes compared. After the data entry of the required information, click on the Compare U.S. The 195 is the tire width in millimeters, measured from the bottom of the bead to the bottom of the bead, the 70 is the sidewall aspect ratio, the ratio of sidewall height to tire width at the tread (indicating that the sidewall height is 70% of the tread width), and the 15 is the wheel rim diameter in inches. The following is an example to help to decode a tire size like 195/70R15. The tire tread width, sidewall (aspect) ratio, and wheel rim diameter from each of the two tires to be compared, along with a speedometer reading used to compute the effect the after market tire size has on your speedometer's accuracy. The information in the Required area is needed to perform the comparison.

Calculations are to be treated as approximate only, due to possible and probable variations in how tires are manufactured. All calculations are designed to round up. designation tires and one for metric TRX designation tires. Compare information of original equipment tire size and alternate after market tire sizes. These calculators require the use of Javascript enabled and capable browsers. U.S And Metric Tire Size Information Calculator