What does 17r mean?

2 Answers
DeHaley
07/24/25 6:22pm
R refers to the tire structure, indicating that this tire is of radial construction. 17 represents the rim diameter. 1. Radial tires. Passenger car wheels generally use radial tires. Radial tire specifications include width, aspect ratio, inner diameter, and speed limit symbols. 2. If the tire specification is 22555r17, it means the width between the two sidewalls of the tire is 225 millimeters, 55 represents the aspect ratio, "R" stands for the word RADIAL, indicating it is a radial tire. 17 is the inner diameter of the tire, measured in inches. 3. The numbers following the designation represent the tire load index. For common household car tires on the market, the numbers are generally above 80, corresponding to a maximum load capacity of over 450 kilograms per tire.
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Lee
08/11/25 10:10am
The term '17r' sounds like an abbreviation for tire size, and I remember seeing similar markings on car tires frequently. If you hear someone mention '17r' in conversation or during a search, it's likely referring to the '17' which denotes the rim diameter of the tire in inches, and the 'r' stands for radial, indicating a radial construction. This type of tire is the most common because it's quite durable and provides stable handling. I've changed quite a few tires myself and noticed that the 17-inch size is very popular, especially suitable for urban SUVs or some mid-sized sedans, offering sufficient support without being too stiff. Of course, choosing tires isn't just about size; it's also about matching the overall balance of the vehicle. For instance, your car's manual will recommend specific models when you buy it, so it's advisable to check your vehicle model directly or consult a professional shop to avoid unnecessary trouble from buying the wrong ones. Regular tire checks are crucial, as both tire pressure and wear affect safety, especially when driving on highways.
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