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Mastercraft Courser Trail RT 31X10.50R15 109R

Truck/SUV - All Terrain
All Terrain

50K Mile Warranty

Rims Not Included

easy test score

8.6 Excellent

Availability

In Stock

Per Tire:

$191.89

Lightning Savings

Was $239.86

Estimated Delivery

Shipping Cost

Installation available

Total

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Authorized distributor of

Local installation

1,000s of locations

US based customer support

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About the Manufacturer:

Established in 1909 in the United States, Mastercraft Tires is a legacy American brand famous for providing high-quality, dependable rubber for everyday drivers. Today, operating under the Cooper Tire family—which was acquired by the global powerhouse Goodyear—Mastercraft seamlessly blends historic American craftsmanship with modern, cutting-edge technology.

By leveraging the extensive Original Equipment (OE) partnerships and rigorous automotive safety standards of its parent companies, Mastercraft ensures that cost-conscious drivers never have to compromise on safety or longevity.

Why Drivers Trust Mastercraft:

American Heritage: Over 100 years of trusted tire design, deeply rooted in U.S. manufacturing standards and everyday road reliability.

World-Class Backing: Benefits directly from the advanced research, development, and stringent quality control testing of both Goodyear and Cooper.

Everyday Dependability: Engineered specifically to provide long-lasting treadwear, quiet highway rides, and stable all-season traction for passenger cars, SUVs, and light trucks.

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(855) 770-3279

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Name

Brand

Size

Price

Easy test score

Specifications

Specs

Value

Description

Load Index

109

The load index (LI) is a 2- or 3-digit number that correlates to the maximum amount of weight the tire can carry. For example, a tire with a load index of 87 indicates that the tire can carry a maximum load of 1,201 lbs. In this particularly example, 4 tires (each with a load index of 87) can carry a maximum of 4,804 lbs. Refer to your vehicle owner's manual for the recommended minimum load index.

Speed Rating
A guide to buying tires

Speed rating (SR) indicates the maximum speed the tire can achieve. Higher speed ratings are typically associated with better handling capabilities. Refer to your vehicle owner's manual for the recommended minimum speed rating.

Max Single Load(lbs)

2270

The maximum load this tire will support. Remember to multiply this number by the number of tires installed on your vehicle to get the maximum carrying capacity. This number is directly related to the Load Index.

Max Single Air Pressure(PSI)

The maximum air pressure this tire will support. This does not represent the amount of air pressure your tires should have at all times. Consult with your owner's manual to determine the best air pressure you should use for your vehicle.

Tread Depth

18.0

The amount of tread on the tire. Once the tire is worn to 2/32nds, it is considered fully used and should be replaced at that time. Most tires will have tire indicators in the grooves of the tire to help you determine when the tires are worn down to 2/32nds.

Tread Design

Nondirectional

The pattern of the grooves, lugs, voids, and sipes on a tire's surface. This design affects the tire's traction, handling, and noise characteristics. Common types include symmetrical (uniform pattern across the tire), asymmetrical (different patterns on the inside and outside for varied road conditions), and directional (designed to rotate in one direction for improved wet traction and hydroplaning resistance).

Rim Width Range

7.0-9.0

The approved wheel rim width range this tire will support.

Measured Rim Width

8.5

The recommended wheel width as recommended by the tire manufacturer to get the best wear us performance for this tire.

Section Width

10.5

The measurement from sidewall to sidewall.

Overall Diameter

30.7

The height of the tire when fully inflated.

Manufacturer Part Number

175166018

Manufacturer part number (sku)

Financing

You can pre-qualify to finance your tires, or you can simply choose Affirm at check-out. Fill out your information and choose the monthly payment that works best for you!

Select 3, 6 or 12 monthly payments, with rates from 10% - 36% APR. 18 months financing available for orders over $1000.00

Checking your eligibility won't affect your credit. You will receive an immediate answer from Affirm.

Affirm has no hidden fees or costs and is completely secure.
Quick and easy, real tire financing, real fast! You can apply in advance and know you can shop for tires when you are ready.

To learn more visit Buy With Affirm or read their convenient Affirm FAQ's. All credit decisions are made by Affirm.

To contact Affirm regarding your account, please call 1-855-423-3729.

No hidden fees

Affirm has no hidden fees or costs and is completely secure

Flexible

You choose the payment schedule that works for you

Quick and easy

Fill out your information and get a real-time decision

Pay over time

Choose the payment plan that works best for you

Learn more about Affirm tire financing options

No Credit? No problem!

Lease your tires with Katapult!

With a small down payment, and easy payments you can lease your tires. Payments are coordinated with your payday. Read more here about how Katapult works.

No credit required

Simple initial payment

No late fees ever

Payoff early is desired

Learn more about Katapult lease-to-own tire financing

Size Details

Size	Load Index/ Speed index	UTQG	Load Range/Ply Rating	Overall Diameter	Section Width	Rim Width Min	Rim Width Max	Rim Width Meas	Tread Depth (in)	Max Single Air Pressure (PSI)	Max Single Load (lbs)	Max Dual Air Pressure (PSI)	Max Dual Load (lbs)	MFG #
31X10.50R15	109R	-		30.7	10.5	7.0	9.0	8.5	18.0	50	2270	-	-	175166018
33X12.50R15	108R	-		32.7	12.5	8.0	10.5	10.0	18.0	35	2205	-	-	175167018
33X12.50R20	114R	-	E/10PLY	32.7	12.5	8.5	11.0	10.0	18.0	65	2600	-	-	175162018
35X12.50R17	121R	-	E/10PLY	34.7	12.5	8.0	10.5	10.0	18.0	65	3195	-	-	175165018
35X12.50R18	128R	-	F/12PLY	34.7	12.5	8.5	11.0	10.0	18.0	80	3970	-	-	175161018
35X12.50R20	125R	-	F/12PLY	34.7	12.5	8.5	11.0	10.0	18.0	80	3640	-	-	175158018
LT225/75R16	115R	-	E/10PLY	29.2	8.7	6.0	7.5	6.0	18.0	80	2680	80	2470	175143018
LT235/80R17	120R	-	E/10PLY	32.0	9.2	6.0	8.0	6.5	18.0	80	3085	80	2835	175149018
LT235/85R16	120R	-	E/10PLY	31.9	9.2	6.0	7.5	6.5	18.0	80	3042	80	2778	175144018
LT245/70R17	119R	-	E/10PLY	30.5	9.7	6.5	8.0	7.0	18.0	80	3000	80	2755	175150018
LT245/75R16	120R	-	E/10PLY	30.7	9.7	6.5	8.0	7.0	18.0	80	3042	80	2778	175168018
LT245/75R17	121R	-	E/10PLY	31.7	9.7	6.0	8.0	7.0	18.0	80	3195	80	2910	175169018
LT265/70R16	121R	-	E/10PLY	30.6	10.7	7.0	9.0	8.0	18.0	80	3195	80	2910	175146018
LT265/70R16	121Q	-	E/10PLY	30.8	10.7	7.0	9.0	8.0	18.0	80	3195	80	2910	175174018
LT265/70R17	121R	-	E/10PLY	31.8	10.7	7.0	9.0	8.0	18.0	80	3195	80	2910	175151018
LT265/70R18	124R	-	E/10PLY	32.8	10.7	7.0	9.0	8.0	18.0	80	3525	80	3195	175152018
LT265/70R18	124Q	-	E/10PLY	32.8	10.7	7.0	9.0	8.0	18.0	80	3525	80	3195	175173018
LT265/75R16	123R	-	E/10PLY	31.8	10.5	7.0	9.0	7.5	18.0	80	3415	80	3085	175147018
LT265/75R16	123Q	-	E/10PLY	31.8	10.5	7.0	9.0	7.5	18.0	80	3415	80	3085	175171018
LT275/55R20	120R	-	E/10PLY	32.1	11.1	8.0	9.5	8.5	18.0	80	3085	80	2835	175155018
LT275/60R20	123R	-	E/10PLY	33.2	10.9	8.0	9.5	8.0	18.0	80	3415	80	3085	175156018
LT275/65R18	123R	-	E/10PLY	32.3	10.9	8.0	9.5	8.0	18.0	80	3415	80	3085	175153018
LT275/65R20	126R	-	E/10PLY	34.3	10.9	8.0	9.5	8.0	18.0	80	3750	80	3415	175157018
LT275/70R18	125R	-	E/10PLY	33.4	10.9	7.0	9.0	8.0	18.0	80	3640	80	3305	175154018
LT285/60R20	125R	-	E/10PLY	33.7	11.5	8.5	10.0	8.5	18.0	80	3640	80	3305	175164018
LT285/60R20	125Q	-	E/10PLY	33.7	11.5	8.5	10.0	8.5	18.0	80	3640	80	3305	175172018
LT285/70R17	121R	-	E/10PLY	32.9	11.5	7.5	9.5	8.5	18.0	80	3195	80	2910	175170018
LT285/75R16	126R	-	E/10PLY	33.0	11.2	7.5	9.5	8.0	18.0	80	3750	80	3415	175159018
LT285/75R16	126Q	-	E/10PLY	33.0	11.2	7.5	9.5	8.0	18.0	80	3750	80	3415	175175018
LT315/70R17	126R	-	E/10PLY	34.6	12.7	8.0	10.5	9.5	18.0	65	3750	65	2910	175160018