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Sailun
Rims not included with purchase of tires

Sailun S637

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  • SimpleScore™

    Our proprietary rating system
    for the modern tire buyer.

    7.8

    Good

    Score breakdown:

    7.7

    Long lasting

    Good

    8.1

    Durability

    Great

    7.8

    Traction

    Good

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98%of customers approveTop 500fastest growing company in US20,000+certified installers7,000+local distributors6M+customers served

166 Reviews

84 on SimpleTire82 from Google Shopping

4.4

overall rating

94%

Would you buy again?

Review breakdown

  • 109 out of 100
  • 38 out of 100
  • 7 out of 100
  • 0 out of 100
  • 12 out of 100

Review summary

AI-generated from verified customer reviews.
The Sailun S637 tires generally receive positive reviews for their performance, durability, and value, particularly for use on RVs, motorhomes, and heavy trailers.
The Sailun S637 tires are generally well-regarded for their performance on RVs, motorhomes, and heavy trailers. They offer a good balance of durability, comfort, and value, often outperforming more expensive brands. However, some users have experienced quality control issues, and their performance in winter conditions may be subpar. Overall, these tires seem to be a reliable choice for most users, especially those prioritizing value and performance in non-winter conditions.

Scorecard

Dry

4.7

Wet

4.6

Winter

4.1

Comfort

4.7

Noise

4.6

Treadwear

4.4

84 SimpleTire reviews

Robert
5
Verified Customer
Feb 20, 2025

Great Large Towable RV Tire

I have been using Sailun Tires on my Large / Heavy RVs for many years. They have preformed great for many trouble free miles

Richard
4
Verified Customer
Dec 9, 2024

Great Trailer tires

I've had these tires on several trailers and never have had a problem, I will continue to buy them in the future.

Kao
5
Verified Customer
Nov 5, 2024

Sailun S637 - good quality & durability

Sailun S637 215/75R17.5 tires have a good reputation for durability and quality made tires. This is my first time running these on my trailers but they look good, have fresh date codes and no issues with mounting so I expect they will live up to their reputation. Simple tire has the best prices and free shipping can't be beat.

Wade
5
Verified Customer
Mar 12, 2024

Best Heavy Trailer Tire

I wont look anywhere else for trailer tires on my 5th Wheel. I bought these to replace the same model tire that was currently on my Toy Hauler and they are fantastic. I had over 15k miles in about 2-3 years on my last set and had 0 issues. I plan to use this brand and model for the foreseeable future.

Anthony
5
Verified Customer
Jul 29, 2023

good tires so far

These tires were put on my fifth wheel camping trailer in 2021. After about 14,000 miles and two years I can say that they have held up very well. When installed they went on easy and balanced without a lot of weights. The tires are a heavy duty tire and they weigh 64 lbs each. The tread shows very little wear and appear to be wearing evenly. I cover the tires when parked for a week or more to protect them from sun damage. At this time I can say that I would recommend these Sailun tires.

Jeffrey
5
RAM 3500 Big 4x2-drw
Verified Customer
Jul 21, 2023

Outstanding Tires, will purchase again!

This makes my second set of Sailuns and are superior to anything I have had in the past. Just an overall great set of tires.

K
4.5
Verified Customer
Jan 14, 2022

These tires are heavy hauler long life

K
4.5
Verified Customer
Dec 29, 2021

I haul my Excavator with these tires I needed the most extreme duty tire and these tires met that They have an all steel cord 75 mile per hour tire 125 PSI They are "non eco" If you buy a lot of tires that's a good thing

Nancy
3.5
Verified Customer
Aug 21, 2021

Bought S637 for my 5th wheel. After approximately 4000 miles I noticed one of the tires was bulging throughout the middle of the tread. It was not over-inflated. The other tires are still good. The warranty/return process is complicated. Now I tried ordering a replacement and "out of stock". Pretty disappointed.

Monte
5
Verified Customer
Jun 14, 2021

We purchased/upgraded to these tires for our fifth wheel trailer. The stock tires had a flat spot on two of the tires and where not rated highly. Most stock trailer tires are rated 65MPH. These are rated to 75MPH, not that I always drive that speed. But we travel full time in our rig so if we have a long travel day I can push the speed a bit.

See all customer reviews

Get technical:

Sailun's S637 is a regional, all-position commercial tire that's designed to offer drivers exceptional stability.



Features & Benefits

  • Tread is designed for commercial use
  • Black sidewall
  • Tread design reduces rolling resistance to improve fuel efficiency

An all-position, regional tire, the S637 from Sailun offers commercial drivers improved traction in wet conditions along with a prolonged tread life. Five extra-wide ribs increase stability at all speeds, and the S637's tread groove wall improves traction while also reducing irregular wear.

Sailun
Vehicle
Mileage Warranty
N/A
Load Index
5677 lbs (141)
Max Speed
81 MPH (M)
Load Range
G (14 Ply)
Sidewall
Blackwall
Tread Depth
19/32nds
Inflation Pressure
115 PSI
Part Number
1001468
Tread Design
Symmetrical
Tire Weight
110.01 lbs
Section Width
10"
Rim Range
7.5"
Overall Diameter
40.1"
Commercial Application
Urban
Commercial Position
All Position
Any info you'are still looking for?

Have a question about Sailun S637 tires?

The Sailun S637 is a good choice for RVs, larger boat trailers, fifth wheels and other heavier towing used.

Yes, the Sailun S637 is durable. Steel belted construction gives the S637 a long service life and heavy load capacity.

Sailun

S637 ∙ 9 sizes available