18x8.50-8 Tube
18x8.50-8 Tube shows searches that convert (16.8% search→purchase), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Flapen Score
Top 9% of 7,287 Automotive niches · +11 vs the category median of 49
Is 18x8.50-8 Tube profitable on Amazon?
According to Flapen's Amazon United States niche tracking, 18x8.50-8 Tube is a $44K/yr Amazon United States market (13K searches/yr). The top 5 brands hold 72% of demand. Demand peaks in Apr–May–Jun–Jul–Aug. Verdict: Worth a look — 60/100.
18x8.50-8 Tube: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Worth a look. Search demand moved +107.9% over the last 90 days and 16.8% of searches end in a purchase.
$44K
revenue / yr
Who owns the niche?
The top 5 brands hold 72% of demand, so 28% of the market is open.
28%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.4★ — the gap to enter on.
0/100
page quality · 14 products
Top 18x8.50-8 Tube products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 90-day click share
18x8.50/9.50-8 Replacement Inner Tube with TR-13 Valve Stem (2-Pack) - For Golf Cart/Tractor/Lawn Mower and More
- Price
- $24.12
- Rating
- 4.3/5
- Reviews
- 20,285
- Age
- 6y ago
18x8.50-8/18x9.50-8 Inner Tube with TR-13 Valve Stem - 18x8.50/9.50-8 Replacement Inner Tube For Golf Cart Tractor Lawn Mower Hand Trucks Wheelbarrows and More (2-Pack)
- Price
- $22.99
- Rating
- 4.6/5
- Reviews
- 230
- Age
- 3y ago
FVRITO 18x8.50-8 18x9.50-8 Inner Tube for ATV Quad 4 Wheeler Go Kart Lawn Tractor Snow Blower Golf Cart Garden Trailer Heavy Duty Lawn Mower Turf With TR-13 Straight Valve Stem 2 Pack
- Price
- $23.32
- Rating
- 4.5/5
- Reviews
- 605
- Age
- 5y ago
18x8.50-8 18x9.50-8 Inner Tubes 2 Pack Heavy Duty Replacement Tire Inner Tubes with Straight Valve Stem for Lawn Mowers Wheelbarrows ATVs Go Karts Tractors Snow Blowers Golf Carts Trailers
- Price
- $22.19
- Rating
- 4.4/5
- Reviews
- 1,260
- Age
- 2y ago
GICOOL 18x8.50/9.50-8 Inner Tubes 2 Pack with TR13 Valve Stem Heavy-Duty Replacement Tubes for Lawn Mowers Tractors Golf Carts Scooters Go Karts Wagons Trailers ATVs Snow Blowers
- Price
- $22.47
- Rating
- 4.4/5
- Reviews
- 1,174
- Age
- 1y ago
Trending
90-day click momentum
RONPOW 18x8.50-8 & 18x9.50-8 Inner Tube TR-13 Straight Valve Stem Heavy-Duty 18x8.50-8 & 18x9.50-8 Lawn Mower Tires Tubes Fits Riding Mowers Yard Trailers Garden Tractors ATVs 2 Pack
- Price
- $22.47
- Rating
- 4.7/5
- Reviews
- 47
- Age
- 11mo ago
NATGAI 2 Pack 18x8.50-8 18x9.50-8 Inner Tubes Replacement Tire Tube with TR-13 Straight Valve Stem Fits Lawn Mowers Yard Tractors Go Karts Golf Carts ATVs Wheelbarrows Hand Trucks
- Price
- $19.20
- Rating
- 4.1/5
- Reviews
- 18
- Age
- 8mo ago
18x8.50-8 18x9.50-8 Lawn Mowers Tubes with TR13 Straight Valve Stem Heavy Duty Replacement Inner Tubes for Garden Trailer Tractor Golf Cart
- Price
- $20.79
- Rating
- 4.4/5
- Reviews
- 486
- Age
- 10mo ago
AMGSH 1 Pack 18x8.50/9.50-8 Inner Tubes High Duty 18x6.50-8 18x7.50-8 18x8.50-8 18x9.50-8 20x8-8 20x10-8 Universal Fit Tire Tube with TR13 Straight Valve Stem
- Price
- $14.25
- Rating
- 4.4/5
- Reviews
- 30
- Age
- 1y ago
18x8.50-8/18x9.50-8 Inner Tube with TR-13 Valve Stem - 18x8.50/9.50-8 Replacement Inner Tube For Golf Cart Tractor Lawn Mower Hand Trucks Wheelbarrows and More (2-Pack)
- Price
- $22.99
- Rating
- 4.6/5
- Reviews
- 230
- Age
- 3y ago
Newest
by launch date
FLKQC 2 Pack 18X8.50/9.50-8 Inner Tubes with TR-13 Valve Stem Replacement Lawn Mower Tire Tubes for Tractors Wheelbarrows ATVs Go Karts & More (Fits 8.5 to 9.5 Wide)
- Price
- $18.36
- Rating
- 4.4/5
- Reviews
- 29
- Age
- 7mo ago
NATGAI 2 Pack 18x8.50-8 18x9.50-8 Inner Tubes Replacement Tire Tube with TR-13 Straight Valve Stem Fits Lawn Mowers Yard Tractors Go Karts Golf Carts ATVs Wheelbarrows Hand Trucks
- Price
- $19.20
- Rating
- 4.1/5
- Reviews
- 18
- Age
- 8mo ago
18x8.50-8 18x9.50-8 Lawn Mowers Tubes with TR13 Straight Valve Stem Heavy Duty Replacement Inner Tubes for Garden Trailer Tractor Golf Cart
- Price
- $20.79
- Rating
- 4.4/5
- Reviews
- 486
- Age
- 10mo ago
RONPOW 18x8.50-8 & 18x9.50-8 Inner Tube TR-13 Straight Valve Stem Heavy-Duty 18x8.50-8 & 18x9.50-8 Lawn Mower Tires Tubes Fits Riding Mowers Yard Trailers Garden Tractors ATVs 2 Pack
- Price
- $22.47
- Rating
- 4.7/5
- Reviews
- 47
- Age
- 11mo ago
weyleity 2 Pack 18x8.50-8 18x9.50-8 Inner Tube | Heavy Duty Replacement Tire Tubes with TR13 Straight Valve Stem for Go Karts ATVs (18x8.5/9.5-8 TR13)
- Price
- $18.94
- Rating
- 4.4/5
- Reviews
- 155
- Age
- 12mo ago
Competition: brands, sellers & click share
The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.
Brands
13 rising
Sellers
15
Top-5 brand share
72%
Top 20: 100%
Top-5 click share
64%
Top 20: 100%
Open market
22%
- AR-PRO33%
- CALU LUKY15%
- FVRITO8%
- SPORTYOUTH8%
- GICOOL8%
- weyleity7%
18x8.50-8 Tube demand & seasonality
Weekly search volume, with the niche's key stats alongside.
Peak months: Apr, May, Jun, Jul, Aug · busiest ÷ quietest = 4.8×
What reviews say buyers love and hate about 18x8.50-8 Tube
What buyers mention most, as a share of all reviews.
What buyers love
98% of reviews“Good value”
“Good Quality”
“Great fit”
“Works as should”
“These are definitely heavy duty”
What buyers complain about
100% of reviews“Tubes are pure garbage”
“the valve stem broke off near the base when I was inserting it through the hole in the rim”
“DID NOT HOLD AIR”
“Does not fit as stated”
“They are a bit more challenging because of the thickness when installing”
18x8.50-8 Tube return rate & reasons
Why buyers send it back, as a share of all return requests.
2.3%
Return rate
75%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common 18x8.50-8 Tube questions
The questions sellers ask about this niche, answered from the tracked metrics.
Related niches
Same-category niches scoring near this one — the next ones worth researching.
Best Flapen score
The highest-scoring niches we track right now, across every category.
