Frequently Asked Questions
The 215/45R18 tire size denotes the width, element ratio, construction type, and wheel diameter. ‘215’ represents the width in millimeters, ‘45’ is the aspect ratio (the peak of the tire’s sidewall as a percent of its width), ‘R’ stands for radial construction, and ‘18’ indicates the wheel diameter in inches.
A 215/45R18 tire has a diameter or “peak” of about 25.6 inches.
Yes, 225 tires are wider than 215 tires. The numbers represent the width of the tire in millimeters. So, a 225 tire is approximately 10mm wider than a 215 tire.
Yes, you could replace a 215 tire with a 205 tire without converting the rim, as long as the rim length and load score are in shape five. However, it’s constantly recommended to test with a tire expert or your vehicle’s producer before making such changes.
