Star Rating to Ply Rating

Star Rating to Ply Rating

By TNREDITOR

01 Nov, 2025

Conversion Table: Star Rating to Ply Rating

In case of radial OTR tires, normally star rating is used to indicate its load capacity, instead of ply-rating (PR for short), which is used on bias OTR tires.

Here is the coversion table from Star-rating to ply-rating.

ServiceTire SizeStar RatingCorresponding
Ply Rating
Grader14.00R24 ★up to 16
16.00R24 ★up to 16
17.5R25 ★up to 16
Earthmover12.00R24 ★  ★  ★up to 24
14.00R24 ★  ★  ★up to 32
14.00R25 ★  ★  ★up to 32
16.00R25 ★  ★up to 36
18.00R25 ★up to 24
18.00R25 ★  ★up to 36
18.00R33 ★  ★up to 40
21.00R33 ★  ★up to 36
21.00R35 ★  ★up to 44
24.00R35 ★  ★up to 48
24.00R35 ★  ★up to 48
27.00R49 ★  ★up to 54
30.00R51 ★  ★up to 58
33.00R51 ★  ★up to 64
36.00R51 ★  ★up to 66
40.00R57 ★  ★up to 74
17.5R25 ★up to 16
20.5R25 ★up to 24
20.5R25 ★  ★up to 28
25/65R25 ★  ★up to 32
23.5R25 ★up to 24
23.5R25 ★  ★up to 32
26.5R25 ★  ★up to 32
29.5R25 ★  ★up to 34
29.5R29 ★  ★up to 40
33.25R29 ★  ★up to 44
37.5R33 ★  ★up to 48
33.25R35 ★  ★up to 44
37.25R35 ★  ★up to 48
37.5R39 ★  ★up to 52
40.5R/75R39 ★  ★up to 54
Loader15.5R25 ★up to 16
17.5R25 ★up to 16
20.5R25 ★up to 24
20.5R25 ★  ★up to 28
23.5R25 ★up to 24
23.5R25 ★  ★up to 32
26.5R25 ★up to 24
26.5R25 ★  ★up to 36
29.5R25 ★up to 28
29.5R25 ★  ★up to 34
29.5R29 ★up to 34
35/655R33 ★up to 36
45/65R45 ★up to 50

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