How thick is the sidewall of a 225 tire?
2 Answers
146.25 millimeters. The 225 represents the tire's section width of 225 millimeters, and the 65 represents the tire's aspect ratio, which is the percentage of the tire's section height divided by the tire's width. The tire's section height is the thickness of the tire's sidewall. For a 225/65 tire, the sidewall thickness is 225 × 65% = 146.25 millimeters. Below is a detailed introduction to Michelin's tire series: Pilot: A sports tire focused on high performance and handling, but with higher road noise, lower comfort, and a wear index around 300, making it less durable. It is mainly suited for high-performance sedans or sports cars. Primacy: Michelin's representative product for comfort and quietness, with models like Primacy-LC Bo Yue and Primacy-HP. The LC Bo Yue is positioned for quiet comfort and fuel efficiency, while the HP focuses on quiet comfort and handling. The latest 3ST model emphasizes safety, quietness, and comfort. Energy: Focused on economy and durability, this series offers excellent wear resistance, wet performance, and environmental performance, with models like XM1+, XM2, and MXV8. The XM1+ is positioned for economy and durability, the XM2 for durability and safety, and the MXV8 offers better comfort and handling. Latitude: Designed for SUVs, featuring excellent off-road performance, comfort, wear resistance, and durability, expanding Michelin's product coverage in the SUV tire market.
I usually drive a compact car with 225-width tires, and the sidewall thickness is quite crucial. I remember when I first bought the car and had to replace the tires, I specifically asked the mechanic about this. They said the thickness generally ranges between 6 to 10 millimeters, but it depends on the brand and type. For example, the summer tires I use are about 7 millimeters thick, with sidewalls made of a nylon and rubber composite. Thinner sidewalls offer a more comfortable ride but are more prone to bulges when hitting potholes, while thicker ones provide better impact resistance. Once, I hit a small stone on the highway, and the sufficient thickness prevented any damage. I’d advise everyone not to focus solely on tire width—sidewall structure affects safety, and regular checks for wear and tire pressure are essential.
