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Carlisle Radial Trail HD ST185/80R13 C/6PLY

Trailer - Radial
Radial

Rims Not Included

easy test score

10.0 Superb

Availability

In Stock

Per Tire:

$82.35

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Was $102.94

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Category

Trailer - Radial | Radial

6H04531

This listing is for new Carlisle Radial Trail HD ST185/80R13 C/6PLY Tires. Manufacturer part number: 6H04531.

The Carlisle Radial Trail HD is a rugged all-terrain tire engineered for drivers who need confident off-road traction without sacrificing comfort on pavement. It is ideal for trucks and SUVs that see both highway and trail use.

The Carlisle Radial Trail HD is a high-quality all-purpose trailer tire designed for RVs, boats, utility trailers, and towable equipment. Engineered with radial construction, it provides superior durability, longer tread life, and reduced heat build-up, making it ideal for long hauls and heavy loads.

This tire is built for stability and reliability, featuring multiple reinforced body plies that minimize sway and improve load-bearing capacity. Its high-tensile belt package enhances impact resistance, reducing the risk of damage from road debris. Additionally, the optimized sidewall compound helps protect against environmental factors like ozone and weather-related wear.

For a quieter and smoother towing experience, the Carlisle Radial Trail HD incorporates a variable pitch design to minimize road noise. Its low rolling resistance promotes fuel efficiency while ensuring steady traction and control. Whether you're towing a camper for a weekend getaway or transporting heavy cargo, this tire is built to deliver consistent performance and peace of mind.

Designed exclusively for trailer use, the Carlisle Radial Trail HD is a dependable choice for those who demand safety, stability, and long-lasting performance on the road.

Best-suited for: Trucks, off-road SUVs, lifted crossovers, and light-duty trail use.

Tire Best Features:

Deep tread blocks and open shoulders provide off-road bite
Stone ejectors prevent debris retention and enhance durability
Reinforced sidewalls protect against cuts and impacts
On-road tread design reduces noise for pavement use
All-terrain capability for mud, dirt, and uneven surfaces

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.

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About the Manufacturer:

Carlisle Tires, founded in 1917 in the USA, has been a trusted name in specialty tires and wheels. Known for application-specific durability, Carlisle products serve key markets across North America, Europe, and Asia, including lawn & garden, ATV/UTV, trailers, agriculture, and industrial vehicles. Now transitioning to the Carlstar name, the brand continues to deliver the same robust performance and reliability without changes to product quality or specs. Carlisle’s legacy lives on through Carlstar, which remains an original equipment supplier to leading manufacturers like John Deere and Polaris.

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Specifications

Specs

Value

Description

Sidewall

Not Available

Describes the sidewall appearance. Examples: BSW= Black Side Wall, WSW = White Side Wall, OWL = Outlined White Letters.

Load Index

Not Available

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

Not Available

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.

Load Range/Ply Rating
Types of tires

C/6PLY

Ply rating, more commonly referred to as load range, represents the strength and durability of the tire. Higher ratings may indicate your tires can handle heavier loads.

UTQG

Not Available

To help consumers evaluate their tires, the U.S. National Highway Traffic Safety Administration (NHTSA) created the Uniform Tire Quality Grading System (UTQG). The UTQG rates tires are rated on their tread-wear, traction performance, and temperature resistance. The grade for each of these can be found on the sidewall of your tire (except for winter tires and certain light truck tires). Click here to learn more.

Max Single Load(lbs)

1480

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

8.0

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

5.0-5.0

The approved wheel rim width range this tire will support.

Measured Rim Width

5.0

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

Section Width

7.2

The measurement from sidewall to sidewall.

Tread Width

Not Available

The measurement from one side of the tread to the other side of the tread.

Overall Diameter

24.7

The height of the tire when fully inflated.

Manufacturer Part Number

6H04531

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

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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.

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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.

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Size Details

Size	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 #
ST175/80R13	-	C/6PLY	24.1	5.0	5.0	5.0	5.0	8.0	50	1360	-	-	6H04511
ST175/80R13	-	D/8PLY	24.1	7.0	5.0	5.0	5.0	8.0	65	1570	-	-	6H04521
ST185/80R13	-	C/6PLY	24.7	7.2	5.0	5.0	5.0	8.0	50	1480	-	-	6H04531
ST185/80R13	-	D/8PLY	24.7	7.2	5.0	5.0	5.0	8.0	65	1710	-	-	6H04541
ST205/75R14	-	C/6PLY	26.1	8.2	5.5	5.5	5.5	9.0	50	1760	-	-	6H04551
ST205/75R14	-	D/8PLY	26.1	7.8	5.5	5.5	5.5	9.0	65	2040	-	-	6H04561
ST205/75R15	-	D/8PLY	27.1	7.8	5.5	5.5	5.5	9.0	65	2150	-	-	6H04591
ST205/75R15	-	C/6PLY	27.1	7.8	5.5	5.5	5.5	9.0	50	1820	-	-	6H04581
ST215/75R14	-	C/6PLY	26.7	8.3	6.0	6.0	6.0	9.0	50	1870	-	-	6H04571
ST225/75R15	-	C/6PLY	28.3	8.6	-	-	6.0	9.0	50	2150	-	-	6H04601
ST225/75R15	-	D/8PLY	28.3	8.6	6.0	6.0	6.0	9.0	65	2540	-	-	6H04611
ST225/75R15	-	E/10PLY	28.1	8.8	6.0	6.0	6.0	9.0	80	2830	-	-	6H04621
ST235/80R16	-	E/10PLY	30.8	9.0	6.5	6.5	6.5	10.0	80	3520	-	-	6H04631
ST235/85R16	-	F/12PLY	31.7	9.3	6.5	6.5	6.5	12.0	95	3960	-	-	6H04651
ST235/85R16	-	E/10PLY	31.7	9.3	6.5	6.5	6.5	12.0	80	3640	-	-	6H04641