Cooper Discoverer S/T LT31X10.50R15
C · 109Q · Owl · 6PLY · M+S
The Cooper Discoverer S/T is an all-season tire available in size LT31X10.50R15. It carries load index 109 (2271 lbs), speed rating Q (Up to 99 mph), load range 6PLY. Ships from our U.S. warehouses to your door or a local installer. Every order ships free — no minimum, and no delivery charge added at checkout.
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Delivery Options
Deliver to Your Address
Tires arrive at your door in secure packaging via FedEx Ground — home, business, or any address you enter at checkout.
Ship to a Local Installer
Have your tires sent straight to a nearby tire shop and get them mounted on arrival — just use the installer's address at checkout.
Every order ships free — no minimum, and no delivery charge added at checkout.
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 S/T
- 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.
- Q (Up to 99 mph)
- 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.
- 109 (2271 lbs)
- 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.
- 6PLY
- 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-Season
- WeightWhat a single tire weighs. It doesn't change your price — delivery is quoted at checkout, not charged by weight.
- 65 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.
- OWL
- ConstructionHow the tire's internal plies are laid. Radial is the standard on virtually every modern passenger vehicle.
- Metric
- 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
- Rim DiameterThe wheel diameter this tire mounts on, in inches. This one has to match your wheel exactly.
- 15"
Why this tire
Authorized Dealer
Authentic brand-name tires with full manufacturer warranties.
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Fast, tracked FedEx delivery to street addresses in the 48 contiguous states.
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In stock · Free shipping on every order
In stock · Free shipping on every order
In stock · Free shipping on every order
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