How much weight can this tire carry?

Load index 109 means one tire is rated to carry up to 2,271 lbs at its recommended inflation pressure. Check the placard inside your driver’s door and never fit a lower index than it lists.

What does the Q speed rating mean?

It certifies the tire for sustained speeds up to 99 mph under standard test conditions. Do not fit a rating below your vehicle’s original specification. Always drive within posted limits.

What is load range C?

Load range is the tire’s strength class, carried over from the old ply-rating system. This tire is C (6 ply), which determines how much weight it carries at a given inflation pressure.

Is this tire suitable for year-round use?

It is an all-season tire, built for dry, wet and light winter conditions. All-season tires are not a substitute for dedicated winter tires in severe snow or ice.

Does this tire have run-flat capability?

No. This is a standard tire, so a spare or repair kit is needed if you lose pressure.

Will LT31X10.50R15 fit my vehicle?

It fits any vehicle that specifies LT31X10.50R15, provided the load index and speed rating meet or exceed the original fitment. Check the placard inside your driver’s door, or contact us before ordering if you are unsure.

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Cooper DISCOVERER S/T 31X10.50R15LT tire

Cooper Discoverer S/T C 31X10.50R15LT tire

Size31X10.50R15LT

Rim15"

Load RangeC (6 ply)

Cooper Discoverer S/T C 31X10.50R15LT

Name: Cooper Discoverer S/T C 31X10.50R15LT
Brand: Cooper
SKU: NAT-COOPER-C73447
Price: 201.49 USD
Availability: InStock

Price per tire

$201.49$237.99Save 15%

In stock

LT31X10.50R15 COOPER DISCOVERER S/T C 109Q OWL 6PLY M+S

Cooper 31X10.50R15LT Car & Sedan

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Brand newFactory-fresh

Your choiceDoor or installer

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Specifications

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 C
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
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.: C (6 ply)
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
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
Ply rating: 6-ply
M+S rated: Yes
WidthSection width in millimetres — the tire's width from sidewall to sidewall. It's the first number in a size like 225/65R17.: 267 in
Rim DiameterThe wheel diameter this tire mounts on, in inches. This one has to match your wheel exactly.: 15"
Part number: C73447

Performance

Why this tire

All-season compound rated for dry, wet and light winter conditions

Load range C construction (6-ply rated) for higher load capacity at pressure

Load index 109 — rated to carry up to 2,271 lbs per tire

Speed rating Q, certified for sustained speeds up to 99 mph

Flotation sizing for wide-stance truck and off-road fitments

266 mm section width, mounts on a 15" wheel

Frequently Asked Questions

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