I’m trying to understand how to read tire size and would appreciate a simple explanation. For example, a tire might have a marking such as 225/65R17 102H, but I’m not completely sure what each number and letter represents.
I understand that 225 refers to the tire width and 65 is the aspect ratio, but I’m still learning about the “R,” wheel diameter, load index, and speed rating.
Can someone explain how to read tire size correctly and what information is most important when buying replacement tires? Are there any common mistakes beginners should avoid when comparing tire sizes?