Our proprietary rating system for the modern tire buyer.
7.9
Good
Score breakdown:
7.7
Long lasting
Good
8.2
Handling
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
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.
Positive highlights
Excellent performance and handling in various weather conditions. Smooth and quiet ride. Great value for the price compared to more expensive brands. Durable construction with steel belts and sidewalls. Good traction and stability, even with heavy loads. Improved ride quality over some OEM tires. Suitable for long-distance travel and highway use.
Negative highlights
A few instances of premature tread wear or separation. Poor performance in snow and ice conditions reported by one user. Slightly larger size may cause clearance issues in some vehicles.
Scorecard
Dry
4.7
Wet
4.6
Winter
4.1
Comfort
4.7
Noise
4.6
Treadwear
4.5
85 Simpletire reviews
Mike
4.5
Verified Customer
Jul 22, 2025
These are the only tires I use on our 40 foot 5th
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.
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.