For delivery estimate

Firestone Radial Duraforce RT 340/80R18 143B

Construction - R-4
Construction

Rims Not Included

easy test score

9.9 Superb

Availability

In Stock

Per Tire:

$651.68

Lightning Savings

Was $814.6

Estimated Delivery

Shipping Cost

Total

See full specs

Authorized distributor of

Local installation

1,000s of locations

US based customer support

Se habla español

Category

Construction - R-4 | Construction

375975

This listing is for new Firestone Radial Duraforce RT 340/80R18 143B Tires. Manufacturer part number: 375975.

The Firestone Radial Duraforce RT is year-round radial tire designed for heavy-duty vehicles and off-road applications. Engineered with ruggedness and reliability, this tire is ready to conquer any terrain and withstand demanding work environments.

Upgrade your vehicle with the Firestone Radial Duraforce RT and experience the outstanding performance and durability that Firestone is known for. With its advanced features and superior craftsmanship, this tire ensures exceptional traction and longevity, maximizing your productivity and reducing downtime.

Best suited for: Heavy-duty vehicles and off-road applications

Tire Benefits & Features:

Direction tread provides reliable traction performance in various terrains and conditions.
Enhanced durability and resistance to cuts, punctures, and abrasions.
Self-cleaning tread design to maintain traction and prevent debris buildup.
Improved stability and control for confident handling and maneuverability.
Long-lasting tread life for extended mileage and reduced replacement costs.
High load-carrying capacity for heavy-duty hauling and off-road tasks.
All-season versatility for reliable performance in diverse weather conditions.

For over 2 decades, Tires Easy has served the online tire community. With over 8 million tires sold, 43K+ 5-star reviews, and tens of thousands of tires just one click away, there’s a reason why millions of customers choose Tires Easy as their online tire destination.

8+ Million Tires

Sold Online

Over 43K 5-star

Customer Reviews

20+ Years

In Business

Free fast delivery

Get expedited shipping

45 day returns

Buy tires without the risk

Buy now, pay later

Convenient financing options

Local installation

Install at local service centers

About the Manufacturer:

Firestone, founded in 1900 in the United States, is a historic American tire brand recognized for its rich heritage and dependable performance. Operating globally through its parent company, Bridgestone, in over 150 countries, Firestone is trusted for its durable and reliable tires, offering all-season capability and strong performance for passenger cars, SUVs, light trucks, and agricultural vehicles.

Chat

Start chat

Call

(855) 770-3279

We can help! Our trained experts have years of tire fitment experience and are available to answer questions.

Specifications

Specs

Value

Description

Load Index

143

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.

Tread Depth

38.0

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

Directional

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).

Measured Rim Width

11.0

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

Section Width

13.5

The measurement from sidewall to sidewall.

Overall Diameter

39.4

The height of the tire when fully inflated.

Manufacturer Part Number

375975

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 #
320/80R18	141B	-	B/4PLY	-	-	-	-	-	-	-	-	-	-	380497
340/80R18	143B	-		39.4	13.5	-	-	11.0	38.0	-	-	-	-	375975
500/70R24	164B	-		51.2	19.5	-	-	16.0	34.0	46	9100	-	-	376842
500/70R24	157B	-		51.2	19.5	-	-	16.0	34.0	46	9100	-	-	371657