Best price guarantee
Free tire replacement coverage
24/7 roadside assistance
Easy returns
.jpg&w=3840&q=75)
.png&w=3840&q=75)
ENDS IN...
DAYS
HRS.
MIN.
SEC.

Sailun S637
Loading
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
Professional tire installation near you.
The SimpleTire promise
Best price guarantee
See the same tire at a lower price? We'll match it.
Free tire replacement coverage
Save your wallet from road hazards like nails.
24/7 roadside assistance
Get help when you need it the most.
Easy returns
Don't like it? Unmounted tires can be sent back.
All the top brands.5M+customers served
175 Reviews
93 on SimpleTire82 from Google Shopping4.4
overall rating
94%
Would you buy again?
Review breakdown
- 112 out of 100
- 40 out of 100
- 9 out of 100
- 1 out of 100
- 13 out of 100
Review summary
AI-generated from verified customer reviews.Scorecard
Dry
4.7
Wet
4.6
Winter
4.1
Comfort
4.7
Noise
4.6
Treadwear
4.4
93 SimpleTire reviews
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.
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.
So disappointed. Noise, to much vibration
I ordered 4 tires, 2 has manufacture defect. They are be curve, and can`t balancing. SIMPLE TIRE BEST SERVICE EVER! they are change for me, unbalancing tire. They are send a car took it bad one, and delivered so fast new one. But I has to nervous, and vast money and time! Don`t recommended nobody!
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.
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.
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.
Great HD trailer tires
I bought these trailer tires several times over the past couple years, because they have a higher speed rating than the Ironman tires I had used. I load them to the max and then pull them over 250 miles. I was having blowouts with the Ironman tires and so far these tires are holding up well. I have had a blowout or 2, probably due to not monitoring tire pressures as closely as I should or road debris, other wise very happy with the value of these tires.
These tires are heavy hauler long life
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
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.
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.

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.
S637 ∙ 8 sizes available