

Cooper Discoverer Stronghold AT LT275/70R18
The Cooper Discoverer Stronghold AT comes in size LT275/70R18. It carries load index 125, speed rating S, load range 0. Ships from our U.S. warehouses to your door or a local installer. Free shipping on select tires — look for the Free shipping label. On other tires, the FedEx delivery cost is shown at checkout before you pay.
Flexible Delivery Options
Deliver to Your Address
Tires arrive at your address in secure packaging via FedEx — home, business, or any street address in the 48 contiguous states you enter at checkout.
Ship to a Local Installer
Have your tires sent to a tire shop that has agreed to receive them — just use the installer's address at checkout.
Free shipping on select tires — look for the Free shipping label. On other tires, the FedEx delivery cost is shown at checkout before you pay.
Accepted Secure Payments
The full spec sheet
- ModelThe manufacturer's name for this tread pattern. The same model in another size shares the same tread design and rubber compound.
- Discoverer Stronghold AT
- Speed RatingA letter code for the highest sustained speed the tire is built to handle — T is 118 mph, H is 130, V is 149. Don't fit a rating lower than the one your vehicle came with.
- S
- Load IndexA code for the maximum weight one tire can carry at its recommended inflation pressure. Match or beat the index listed on your driver's-door sticker.
- 125
- Load RangeThe tire's strength class, carried over from the old ply-rating system. C, D and E carry progressively more weight at higher inflation pressures — you'll mostly see them on trucks and vans.
- 0
- SeasonThe conditions the tread and rubber compound are designed for. All-season is the year-round default; winter tires stay flexible below 45°F; summer tires grip best in warm, dry weather and aren't made for snow.
- All-Weather
- WeightWhat a single tire weighs. It doesn't change your price — delivery is quoted at checkout, not charged by weight.
- 56.75 lbs
- SidewallHow the lettering on the tire's outer wall is finished — blackwall, white letters, and so on. It's cosmetic and doesn't affect how the tire drives.
- RWL
- Run FlatA reinforced sidewall that lets you keep driving a limited distance at reduced speed after losing air. Only fit these to a vehicle with tire-pressure monitoring.
- No
- Tire type
- Light Truck
- Terrain
- All-Terrain
- Ply rating
- 10-ply
- Severe snow (3PMSF)
- Yes
- M+S rated
- Yes
- Overall diameter
- 33.19"
- Tread depth
- 16/32"
- Max pressure
- 80 psi
- WidthSection width in millimetres — the tire's width from sidewall to sidewall. It's the first number in a size like 225/65R17.
- 275 mm
- Aspect RatioThe sidewall height as a percentage of the section width — the second number in 225/65R17. A lower number means a shorter sidewall.
- 70
- Rim DiameterThe wheel diameter this tire mounts on, in inches. This one has to match your wheel exactly.
- 18"
- UPC / GTIN
- 029142992974
- Part number
- 170290047
- Revolutions / mile
- 627
- Approved rim widths
- 7.0-9.0"
- Max load (dual)
- 3305 lbs
What you get
- * Provide grip and traction for the life of the tire* Grab and release soft surfaces* Helps to provide stability* Grab into the snow to help provide traction in harsh winter conditions* Help to resist cracking, tearing and rounding of the tread* Help prevent stones getting stuck in the tread* Meets the required performance criteria for Use in Severe Snow Conditions
Genuine Brand-Name Tires
Authentic brand-name tires, brand new and never mounted. Manufacturer warranties apply as each brand sets them.
48-State Shipping
Tracked FedEx delivery to street addresses in the 48 contiguous states.
Transparent Pricing
Every charge is shown before you pay — clear, upfront pricing.
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