What does the size LT305/65R17 mean?

Reading left to right: 305 is the section width in millimetres, 65 is the sidewall height as a percentage of that width, and the tire mounts on a 17-inch wheel. All three must match what your vehicle specifies.

How much weight can this tire carry?

Load index 121/118 means one tire is rated to carry up to 3,197 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 SL?

Load range is the tire’s strength class, carried over from the old ply-rating system. This tire is SL, 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.

Authentic Tire

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Cooper DISCOVERER S/T MAXX OLD DOT 3056517 tire

Cooper Discoverer S/T Maxx Blk Old Dot LT305/65R17 tire

SizeLT305/65R17

Rim17"

Load RangeSL

Cooper Discoverer S/T Maxx Blk Old Dot LT305/65R17

Name: Cooper Discoverer S/T Maxx Blk Old Dot LT305/65R17
Brand: Cooper
SKU: NAT-COOPER-90000019905
Price: 333.63 USD
Availability: InStock

Price per tire

$333.63$370.99Save 10%

In stock

LT305/65R17 COOPER DISCOVERER S/T MAXX 121/118Q BLK old dot-2016

Cooper LT305/65R17 SUV & Crossover

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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 Maxx BLK OLD DOT
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.: 121/118
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.: SL
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.: 64 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.: BW
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
Load index (single/dual): 121/118
WidthSection width in millimetres — the tire's width from sidewall to sidewall. It's the first number in a size like 225/65R17.: 305 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.: 65
Rim DiameterThe wheel diameter this tire mounts on, in inches. This one has to match your wheel exactly.: 17"
Part number: 90000019905

Performance

Why this tire

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

Standard Load (SL) construction for typical passenger-car loads

Load index 121/118 — rated to carry up to 3,197 lbs per tire

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

Light-truck (LT) casing for pickups, vans and heavier-duty use

305 mm section width, 65 series sidewall, mounts on a 17" wheel

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