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Sailun S637T Tires

Trailer - Radial

The Sailun S637T is a tough, all-steel trailer tire built to handle heavy loads with stability and control. Designed for RVs, fifth-wheels, utility trailers, and boat haulers, it provides dependable highway performance and long-lasting durability for frequent towing.

Its five-rib tread design helps maintain straight-line tracking and even wear, while the solid shoulder construction improves stability and reduces irregular tread patterns. Full-depth sipes enhance wet-weather traction, and the steel-belted casing delivers strength and heat resistance under demanding conditions. The S637T’s low-rolling-resistance compound also promotes fuel efficiency and cooler running for longer tire life.

Best suited for: Heavy-duty trailers, RVs, horse trailers, and boat haulers used in highway and regional service.

Tire Features:

All-steel construction supports heavy loads and durability
Five-rib tread pattern promotes stability and even wear
Full-depth sipes improve grip in wet conditions and enhance cooling
Solid shoulders reduce irregular wear for smoother performance
Low-rolling-resistance design improves fuel efficiency and tread life

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Best value

The lowest priced tire with an easy test score^® of 'Great' or better

Sailun S637T

Radial
ST225/75R15

121M

tires
easy test score

9.6 Superb

Rims Not Included

Per Tire:

$120.14

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Was $150.18

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Our percentage-off promotions, discounts, or sale markdowns are customarily based on our own opinion of the value of this product, which is not intended to reflect a former price at which this product has sold in the recent past. This amount represents our opinion of the full retail value of this product today, based on our own assessment after considering a number of factors.

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Top rated

The tire with the highest easy test score^®

Sailun S637T

Radial
ST235/80R16

129/125L

tires
easy test score

9.6 Superb

Rims Not Included

Per Tire:

$162.39

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Was $202.99

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Sailun - S637T

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Lowest Price
From $120
Mileage Warranty

Sailun S637T ST225/75R15 F/12PLY

Rims Not Included

Radial
Trailer - Radial
See details

easy test score

9.6 Superb

4.8

18 reviews

Per Tire:

$120.14

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Was $150.18

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Please contact customer support. (877) 709-4442

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Sailun S637T ST235/80R16 H/16PLY

Rims Not Included

Radial
Trailer - Radial
See details

easy test score

9.6 Superb

4.8

18 reviews

Per Tire:

$148.49

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Was $185.61

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FET

$26.08

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Sailun S637T ST235/85R16 H/16PLY

Rims Not Included

Radial
Trailer - Radial
See details

easy test score

9.6 Superb

4.8

18 reviews

Per Tire:

$153.35

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Was $191.69

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FET

$39.32

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Sailun S637T ST235/80R16 G/14PLY

Rims Not Included

Radial
Trailer - Radial
See details

easy test score

9.6 Superb

4.8

18 reviews

Per Tire:

$162.39

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Was $202.99

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Please contact customer support. (877) 709-4442

FET

$21.92

Estimated Delivery

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Installation available

Total

$ /mo

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Sailun S637T ST235/85R16 G/14PLY

Rims Not Included

Radial
Trailer - Radial
See details

easy test score

9.6 Superb

4.8

18 reviews

Per Tire:

$164.73

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Was $205.91

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Please contact customer support. (877) 709-4442

FET

$34.04

Estimated Delivery

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Installation available

Total

$ /mo

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Compare tires at a glance using our easy test score^® system. Our proprietary algorithm factors in performance, expert insights, user reviews, and Uniform Tire Quality Grading (UTQG) scores.