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The Discoverer STT PRO is the most extreme all-season, off-road tire Cooper offers to date, providing remarkable off-road performance without sacrificing on-road traction. This tire will help you plow through all the mud, dirt, sand, gravel, and rocks you can find. Get the Discoverer STT Pro and get out there!

Cooper Discoverer STT Pro

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Get up to $75 back on a set of 4 select Cooper tires when you use the Goodyear Credit Card on purchases made 12/1/25 - 12/31/25 by online or mail-in rebate and paid by prepaid card or virtual card. Sumbit form by 1/31/26.
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10% off TIS Wheels and Tires Package

Front and Rear LT275/65R18 123Q

$354.99/tire

Part Number170121034
Max Wheel Width9
Min Wheel Width7.5
Outside Diameter32.1
PartNumber170121034
SidewallRaised White Letters
Warranty Mileage-

Ship to Store*

3 Available

Ship to Home

3 Available

Ship to Store*Low Availability
Ship to HomeLow Availability

10% off TIS Wheels and Tires Package

Only $1419.96for 4 tires

Additional Information Cooper Discoverer STT Pro

Resists stone retention which helps to increase the life of the tire|Mud release dimples aid in keeping the tread pattern free of loose soil|Alternating shoulder lugs enhance traction in mud and soft surfaces|Unique hybrid 3-2 tread pattern reduces noise and increases stability

Highlights

  • Resists stone retention which helps to increase the life of the tire
  • Mud release dimples aid in keeping the tread pattern free of loose soil
  • Alternating shoulder lugs enhance traction in mud and soft surfaces
  • Unique hybrid 3-2 tread pattern reduces noise and increases stability

Specifications

Part NumberSizeMax
Wheel
Width		Min
Wheel
Width		Outside
Diameter		PartNumberSidewallWarranty
Mileage		StockPrice
170102034LT265/70R17 121Q8.5731.6170102034Raised White Letters-In Stock *$311.99
170104006LT295/60R20 126Q10833.9170104006Black Sidewall-Low Stock *$489.99
170105006LT295/65R20 129Q10835.1170105006Black Sidewall-Low Stock *$481.99
170106034LT265/75R16 123Q8731.6170106034Raised White Letters-Low Stock *$305.99
17010703433x12.50R15LT 108Q118.533170107034Raised White Letters-Low Stock *$311.99
170108034LT285/75R16 126Q97.532.8170108034Raised White Letters-In Stock *$317.99
170109006LT235/85R16 120Q7.5631.7170109006Black Sidewall-Out of Stock$280.99
17011003431x10.50R15LT 109Q9731170110034Raised White Letters-Low Stock *$249.99
170111034LT275/70R18 125P9733.2170111034Raised White Letters-In Stock *$377.99
170112006LT245/75R16 120Q86.530.5170112006Black Sidewall-Low Stock *$285.99
17011303435x12.50R15LT 113Q118.535170113034Raised White Letters-In Stock *$308.99
170114034LT285/70R17 121Q97.532.7170114034Raised White Letters-Out of Stock$344.99
170115034LT295/70R17 121Q107.533.3170115034Raised White Letters-Out of Stock$373.99
170116006LT305/55R20 121Q118.533.2170116006Black Sidewall-Out of Stock$466.99
170117034LT315/75R16 127Q11834.6170117034Raised White Letters-Out of Stock$354.99
170118034LT285/65R18 125Q10832.6170118034Raised White Letters-Out of Stock$406.99
170119034LT315/70R17 121Q11834.4170119034Raised White Letters-In Stock *$398.99
170120034LT305/70R16 124Q9.5832.8170120034Raised White Letters-Low Stock *$343.99
170121034LT275/65R18 123Q97.532.1170121034Raised White Letters-Low Stock *$354.99
17012203430x9.50R15LT 104Q8.56.530170122034Raised White Letters-Out of Stock$217.99
170123034LT305/60R18 121Q118.532.4170123034Raised White Letters-Out of Stock$456.99
170124034LT325/65R18 127Q12934.6170124034Raised White Letters-Out of Stock$452.99
170125034LT305/70R18 126Q108.534.8170125034Raised White Letters-Out of Stock$390.99
170126006LT215/85R16 115Q75.530.4170126006Black Sidewall-Out of Stock$214.99
170127006LT275/65R20 126Q9.57.534.1170127006Black Sidewall-Low Stock *$440.99
17012800635x12.50R20LT 121Q118.535170128006Black Sidewall-In Stock *$505.99
17012900637x12.50R17LT 124Q118.537170129006Black Sidewall-Out of Stock$464.99
17013003432x11.50R15LT 113Q10832170130034Raised White Letters-Low Stock *$283.99
17013200635x12.50R22LT 117Q118.535170132006Black Sidewall-Out of Stock$524.99
170133006LT325/50R22 122Q12934.8170133006Black Sidewall-Out of Stock$543.99
17013400637x13.50R20LT 127Q128.537170134006Black Sidewall-Low Stock *$576.99
170135006LT295/55R20 123Q10832.8170135006Black Sidewall-Low Stock *$444.99
170136006LT305/65R17 121Q118.532.6170136006Black Sidewall-Low Stock *$407.99
17013700637x13.50R17LT 121Q118.537170137006Black Sidewall-In Stock *$441.99
17013800637x12.50R20LT 126Q118.537170138006Black Sidewall-Out of Stock$514.99
17013900637x13.50R18LT 124Q118.537170139006Black Sidewall-Low Stock *$484.99
17014000637x13.50R22LT 123Q118.537170140006Black Sidewall-Out of Stock$635.99
17014100635x13.50R20LT 121Q118.535170141006Black Sidewall-Low Stock *$537.99
17014200640x13.50R17LT 121Q118.540170142006Black Sidewall-Out of Stock$544.99
17014300638x13.50R20LT 123Q118.538170143006Black Sidewall-Low Stock *$584.99
17014400638x15.50R20LT 128Q131138170144006Black Sidewall-Out of Stock$592.99
170145034LT295/70R18 129P107.534.3170145034Raised White Letters-In Stock *$414.99
170146006LT305/55R20 125Q118.533.2170146006Black Sidewall-In Stock *$501.99
170147034LT305/60R18 126Q118.532.4170147034Raised White Letters-Out of Stock$492.99
17014800635x12.50R20LT 125Q118.535170148006Black Sidewall-In Stock *$508.99
170149006LT295/65R20 129Q10835.1170149006Black Sidewall-Out of Stock$514.22
170150034LT265/75R16 123Q8731.6170150034Raised White Letters-Out of Stock$311.36
170151034LT285/75R16 126Q97.532.8170151034Raised White Letters-Out of Stock$333.29
170152034LT275/70R18 125P9733.2170152034Raised White Letters-Out of Stock$387.32
170153034LT315/75R16 127Q11834.6170153034Raised White Letters-Out of Stock$379.33
170154034LT305/70R16 124Q9.5832.8170154034Raised White Letters-Out of Stock$360.96
170155034LT275/65R18 123Q97.532.1170155034Raised White Letters-Out of Stock$360.91
170156034LT305/70R18 126Q108.534.8170156034Raised White Letters-Out of Stock$426.87
17015700637x12.50R17LT 124Q118.537170157006Black Sidewall-Out of Stock$483.76
17015800637x13.50R18LT 124Q118.537170158006Black Sidewall-Out of Stock$501.22
170159006LT275/65R20 126Q9.57.534.1170159006Black Sidewall-Inquire for StockInquire for Price
17022900635x12.50R18LT 118Q118.535170229006Black Sidewall-Low Stock *$465.99
17023000633x12.50R20LT 119Q118.533170230006Black Sidewall-In Stock *$466.99
17023100635x12.50R22LT 121Q118.535170231006Black Sidewall-Low Stock *$558.99
17025503435x12.50R17LT 121Q118.535170255034Raised White Letters-Out of Stock$420.99
170306034LT285/70R17 121Q97.532.7170306034Raised White Letters-In Stock *$353.99
17030700640x13.50R17LT 121Q118.540170307006Black Sidewall-Low Stock *$565.99
17030800637x12.50R17LT 124Q118.537170308006Black Sidewall-Low Stock *$482.99
17030900637x12.50R20LT 126Q118.537170309006Black Sidewall-Out of Stock$536.99
170310034LT315/75R16 127Q11834.6170310034Raised White Letters-Low Stock *$368.99