Sumitomo Encounter AT 31X10.50R15LT C Encounter AT
Sumitomo

Encounter AT

31X10.50R15LT C
3PMSF
$148.49/tire $197.99
Set of 4: $593.96
Minimum order: 4 tires (sizes can be mixed) ? Selling in sets of 4 is how we keep our prices this low — and a matching set keeps your car balanced and safe.
Most drivers replace all four for even wear and handling.
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Specifications

Size31X10.50R15LT C Encounter AT
Width31 mm
Aspect ratio
Rim diameterR15
Load index109
Speed ratingR
Ply rating6
Treadwear warranty60,000 miles
Tread depth18/32"
Weight48.5 lbs
Max pressure50 psi
Severe snow (3PMSF)Yes
Run-flatNo

About the Sumitomo Encounter AT

All-Weather All-Terrain Passenger Light Truck/SUV tire.

Features

* Non-directional 5-rib tread design* Deep circumferential grooves* Optimized tread pattern* Variable width shoulder lugs* 3D wave sipes* Carries the Three Peak Mountain Snow Flake (3PMSF) symbol* M+S Rated* 60,000 Mile/100,000 km Limited Treadwear Warranty for Metric and LT Sizes* Free 30-Day Test Drive* 2-Year, 24/7 Tire Roadside Assistance* Free Lifetime Replacement for Workmanship and Material Defects

Benefits

* Optimizes ride stability and protects against irregular wear* Boosts wet grip performance and provides superior wear life* Stabilizes handling and steering response for a smooth, quiet ride* Evacuates rocks, sand and other debris for superior off-road grip* Enhances traction and performance in snow, mud and other soft surfaces* Ensures reliable winter performance in heavy snow

Understanding the 31X10.50R15LT C size

In the size code 31R15, 31 is the section width in millimetres (about 1.2"). R15 means radial construction on a 15-inch wheel.

The load index 109 means each tire supports up to 2,271 lbs — about 9,084 lbs across a full set of four. The speed symbol R certifies the tire to 106 mph under its rated load. Always match or exceed the load index and speed rating listed on your vehicle's door-jamb placard.

What the Sumitomo Encounter AT is built for

It carries the three-peak mountain snowflake (3PMSF) symbol, meaning it passed a standardised severe-snow traction test.

Price and value

At $148.49 per tire, a full set of four costs $593.96. That is about 10% below the average price of the 46 tires we stock in this size. Backed by a 60,000-mile treadwear warranty, that works out to roughly $9.90 per 1,000 miles across the set.

Frequently asked questions

What does the tire size 31R15 mean?

31 is the section width and R15 indicates radial construction for a 15-inch wheel.

What are the load and speed ratings of the Sumitomo Encounter AT 31X10.50R15LT C?

Its load index of 109 allows up to 2,271 lbs per tire. Its speed rating of R is certified to 106 mph. Check your door-jamb placard and do not fit a tire rated below the vehicle's requirement.

How much does a set of 4 Sumitomo Encounter AT 31X10.50R15LT C tires cost?

A single tire is $148.49 and a set of four is $593.96, covered by a 60,000-mile treadwear warranty.

Is the Sumitomo Encounter AT rated for snow?

Yes. It carries the three-peak mountain snowflake (3PMSF) symbol, meaning it met a standardised severe snow traction test.

Does the Encounter AT come in other sizes?

Yes — we stock 47 additional Encounter AT sizes besides 31X10.50R15LT C. Fit only a size approved for your vehicle.

Other sizes of this model

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