Cooper Discoverer STT Pro Tire Pressure Chart

Cooper Discoverer STT Pro

Cooper Discoverer STT Pro tires come in 48 tire sizes with maximum tire load capacity of 1985 pounds to 4079 pounds and maximum tire inflation of 35 psi to 80 psi.

Cooper Discoverer STT Pro tire load capacity and tire inflation settings may vary based on tire load range or ply rating. Check Cooper Discoverer STT Pro tire sidewall for more information. Tire psi value printed on the sidewall is the maximum air pressure that Cooper Discoverer STT Pro tire can be inflated to support its corresponding maximum weight capacity, and not necessarily the recommended tire pressure for your vehicle. Never overload or overinflate Cooper Discoverer STT Pro tires beyond the maximum tire load capacity and maximum tire inflation values indicated on the tire sidewall.

Select Cooper Discoverer STT Pro tire size for its maximum tire inflation and tire load capacity.

Tire Size Load Index Max Load Capacity
(single / dual rear wheels)
Maximum Tire Pressure Psi

30x9.50R15 104Q

104 1985 lbs 50 psi

31x10.50R15 109Q

109 2271 lbs 50 psi

32x11.50R15 113Q

113 2536 lbs 50 psi

33x12.50R15 108Q

108 2205 lbs 35 psi

35x12.50R15 113Q

113 2536 lbs 35 psi

35x12.50R20 125Q

125 3638 lbs 80 psi

35x12.50R22 117Q

117 2833 lbs 65 psi

35x13.50R20 122Q

122 3307 lbs 65 psi

37x12.50R17 124Q

124 3528 lbs 50 psi

37x12.50R20 126Q

126 3748 lbs 65 psi

37x13.50R17 121Q

121 3197 lbs 65 psi

37x13.50R18 124Q

124 3528 lbs 50 psi

37x13.50R20 127Q

127 3859 lbs 65 psi

37x13.50R22 123Q

123 3418 lbs 65 psi

38x13.50R20 123Q

123 3418 lbs -- psi

38x15.50R18 128Q

128 3969 lbs -- psi

38x15.50R20 128Q

128 3969 lbs -- psi

40x13.50R17 121Q

121 3197 lbs -- psi

LT215/85R16 115/112Q

115/112 2679 / 2470 lbs 80 psi

LT225/75R16 115/112Q

115/112 2679 / 2470 lbs 80 psi

LT235/85R16 120/116Q

120/116 3087 / 2756 lbs 80 psi

LT245/75R16 120/116Q

120/116 3087 / 2756 lbs 80 psi

LT255/75R17 111/108Q

111/108 2403 / 2205 lbs 50 psi

LT265/70R17 121/118Q

121/118 3197 / 2911 lbs 80 psi

LT265/75R16 123/120Q

123/120 3418 / 3087 lbs 80 psi

LT275/65R18 123/120Q

123/120 3418 / 3087 lbs 80 psi

LT275/65R20 126/123Q

126/123 3748 / 3418 lbs 80 psi

LT275/70R18 125/122P

125/122 3638 / 3307 lbs 50 psi

LT285/65R18 125/122Q

125/122 3638 / 3307 lbs 80 psi

LT285/70R17 121/118Q

121/118 3197 / 2911 lbs 80 psi

LT285/75R16 126/123Q

126/123 3748 / 3418 lbs 80 psi

LT295/55R20 123/120Q

123/120 3418 / 3087 lbs 80 psi

LT295/60R20 126/123Q

126/123 3748 / 3418 lbs 80 psi

LT295/65R20 129/126Q

129/126 4079 / 3748 lbs 80 psi

LT295/70R17 121/118Q

121/118 3197 / 2911 lbs 80 psi

LT295/70R18 129/126P

129/126 4079 / 3748 lbs 80 psi

LT305/55R20 125/122Q

125/122 3638 / 3307 lbs 80 psi

LT305/60R18 121/118Q

121/118 3197 / 2911 lbs 65 psi

LT305/65R17 121/118Q

121/118 3197 / 2911 lbs 65 psi

LT305/70R16 124/121Q

124/121 3528 / 3197 lbs 65 psi

LT305/70R18 126/123Q

126/123 3748 / 3418 lbs 65 psi

LT315/70R17 121/118Q

121/118 3197 / 2911 lbs 65 psi

LT315/75R16 127/124Q

127/124 3859 / 3528 lbs 65 psi

LT325/50R22 122Q

122 3307 lbs 65 psi

LT325/65R18 127/124Q

127/124 3859 / 3528 lbs 65 psi

All listed data is for informational purposes only. TirePsi.com does not warrant or make any representations regarding the accuracy of or the results of the use of this information. Always refer to vehicle owner's manual for recommended tire pressure settings. Never overinflate or overload a tire beyond its maximum capabilities listed on sidewall. For individual tire size, refer to its load and inflation table.

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