The ply rating (Ply Rating, PR) to which this tyre model corresponds.
Ply Rating is a comprehensive indicator that describes the ability of a tyre to withstand high loads in terms of weight, traction and pressure (including when hitting various obstacles). This parameter is important primarily for tyres operating under increased load conditions — and tyres for ATVs are most often used in this way. PR is indicated as a number indicating how many layers of cotton cord the strength of this tyre corresponds to (such a cord was used in tyres of the old design, now it is no longer used). Accordingly, the larger the number in the designation, the stronger and more reliable the tyre. On the other hand, increasing the ply rate increases the weight and cost of the product. Thus, some models are produced in several PR variants to choose from (for such models, the rating options are indicated in the notes to this paragraph).
The minimum ply rating found in modern ATV tyres is
2PR. However,
4PR and
6PR models are more popular.
8PR is already considered a very solid value, and the most “hardy” products correspond to 10PR. The optimal PR values can be indicated in the documents for the ATV, and recommendations on this matter for different situations can be found in special sources.
