Is 3.50-8 tire profitable to sell on Amazon United States?

The niche generates $20K/yr across 28 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is +79.7%. Flapen's verdict: Worth a look (59/100).

How competitive is the 3.50-8 tire niche?

21 brands and 26 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 62% of demand.

What do buyers complain about in 3.50-8 tire?

Top complaints mined from reviews: Size-Overall, Flatness, Hard Feel. The return rate is 1.9%.

When does demand for 3.50-8 tire peak?

Demand peaks in Apr–May–Jun; the busiest month runs 4.6× the quietest.

What does it cost to enter the 3.50-8 tire niche?

Listings span $7.98–$63.39; the average listing price is $37.06 (sweet spot $15–$100). The average incumbent carries 796 reviews — the moat a new listing must climb.

3.50-8 tire

Worth a look

Shows a sweet-spot price point ($37.06 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Avg price

Incredible$37.06

avg listing price — sweet spot $15–$100

Price range

Great$7.98–$63.39

cheapest to priciest tracked listing — scored on the share inside $15–$100

Growth

Great+79.7%

90-day search growth — must beat 0% to launch

Returns

Great1.9%

return rate — above 5% kills the launch gate

Brand share

Good62%

top-5 brand share — brands hold most of the demand

Review moat

Good795.86

avg incumbent reviews — the moat a new listing must climb

Competition

Good47%

top-5 click share — leaders hold, buyers still browse

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Conversion

Okay3.3%

search→purchase rate — share of searches ending in a sale

Market size

Bad$20K

$20K/yr · 17K searches

According to Flapen's Amazon United States niche tracking, 3.50-8 tire is a $20K/yr Amazon United States market (17K searches/yr). The top 5 brands hold 62% of demand. Demand peaks in Apr–May–Jun. Verdict: Worth a look — 59/100.

Data updated Jul 14, 2026 · scored weekly · How we score niches

3.50-8 tire market data

Units sold / yr: 1K–1K; avg 0–100/product
Revenue / yr: $37K–$46K; units × avg price
Conversion rate: 3.3%
Avg BSR: #241
Page quality: 0%
Prime: 93%
Sponsored: 89%
Out of stock: 2.1%
Avg brand age: 48 months
Avg seller age: 226 days

Competition & brand share

The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.

Brands

21 falling

Sellers

Top-5 brand share

62%

Top 20: 99%

Top-5 click share

47%

Top 20: 93%

Open market

33%

GICOOL25%
LTNICER12%
QsEzDo11%
Potreba9%
Parts Camp5%
RUTU5%

Demand & seasonality

Weekly Amazon search volume, last 57 weeks — +79.7% search growth over the last 90 days.

Peak months: Apr, May, Jun · busiest ÷ quietest = 4.6×

Open Trend

Top 3.50-8 tire search terms

3.50-8 wheelbarrow tire9K/yr +128.2%6.2% conv.
3.50-8 tire5K/yr +29.9%3.4% conv.
3.5-8 wheelbarrow tire3K/yr +45.9%8.9% conv.

All search terms

Top 3.50-8 tire products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

GICOOL 3.50-8 Wheelbarrow Tire 14.5 Flat-free Solid Tire and Wheel with 5/8 Axle Bore Hole 3-6 Centered Hub for Wheelbarrow Trolley Dolly Go Kart Universal Fit 4.80-8 4.00-8 4.00-6

GICOOL$33.684.6★248 rev

LTNICER 14.5 Wheelbarrow Tire 3.50-8 Flat-free Solid Tire and Wheel with 3 -7 Centered Hub and 5/8 & 3/4Bearings for Wheelbarrow Trolley Dolly Lawn Mover Go Kart Replacement (2-Pack)

LTNICER$46.994.5★28 rev

Inner Tube 3.50-8 for Wheelbarrow Hand Truck Dolly 14 Rim 8

Potreba$8.064.6★3,886 rev

GICOOL 14.5 Wheelbarrow Tire 3.50-8 Pneumatic Tire Universal Wheelbarrow Wheel for 4.80/4.00-8 4.00-6 and 2.50-8 with 6 Centered Hub 5/8 Axle Bore Hole Sealed Bearings

GICOOL$35.824.3★203 rev

QsEzDo 3.50-8 Tire and Inner Tube (1 Set) by Air Filled 4PR and Max 35 PIS with TR13 Strainght Valve Stem Fits 8-Inch Wheel/Rim Work for Wheelbarrow Hand Truck Tool Cart Garden Carts

QsEzDo$24.764.4★103 rev

Newest

by launch date

2-Set 14x3.50-8 Tire and Inner Tube Set - 4PR 14.25 Inflated Diameter and 3.34 Width TR13 Straight Valve Stem for Wheelbarrow Hand Truck Garden Cart Utility Cart Lawn Mower Generator Load 300LBS

SINADYLON$28.249 rev

3mo ago

1PZ 14.5 Wheelbarrow Tire 3.50-8 Flat-free Solid Tire and Wheel with 3 - 7 Centered Hub and 5/8 & 3/4 Bearings for Wheelbarrow Trolley Dolly Lawn Mover Go Kart Replacement

1PZ$46.496 rev

6mo ago

14.5 Wheelbarrow Tire Flat-Free 3.50-8 Solid Tire 300LB Capacity Each with 5/8 & 3/4 Bearings 3-4-6-7 Adjustable Hub Tire and Wheel Replacement for Dolly Hand Truck Garden Cart 2 Pack

luxlead$46.548 rev

6mo ago

4.80/4.00-8 Flat Free Wheelbarrow Tires and Wheels 14.5 Universal Fit Solid Tires with 5/8 or 3/4 Bearing 3-7 Hub Adapter Kit Hand Truck Wheels Replacement for 3.50/2.50-8 4.00-6etc 1 PCS

phepetroll$28.92199 rev

1y ago

LTNICER 14.5 Wheelbarrow Tire 3.50-8 Flat-free Solid Tire and Wheel with 3 -7 Centered Hub and 5/8 & 3/4Bearings for Wheelbarrow Trolley Dolly Lawn Mover Go Kart Replacement (2-Pack)

LTNICER$46.9928 rev

1y ago

What buyers say about 3.50-8 tire

What buyers praise and complain about, mined from review topics.

What buyers love

Size-Overall24%

“Fits As Advertised”

Quality-Overall18%

“They seem to be well made”

Value For Money13%

“GREAT VALUE”

Assembly/Installation10%

“Installed quick”

Advertised Vs Actual Product8%

“As advertised”

Ease Of Use5%

“is easy for you”

Wheel Quality4%

“The wheels are fine”

Strength4%

“Tire is solid”

Durability4%

“Great looking and durable”

Functionality-Overall1%

“the spacers worked perfectly”

What buyers complain about

Size-Overall15%

“Wrong size”

Flatness12%

“Never goes flat”

Hard Feel9%

“its to hard”

Durability8%

“DEFORMED”

Quality-Overall7%

“This is an additional quality control concern”

Ease Of Use5%

“trying to figure out the spacing was a pain”

Strength5%

“Too fragile for heavy work”

Maintenance And Repair3%

“could not be patched”

Advertised Vs Actual Product2%

“I don't appreciate the dishonest description”

Material Quality2%

“Not a Real Tire, It's Plastic”

Top return reasons

Size-Overall68%

Advertised Vs Actual Product11%

Functionality-Overall6%

Material Quality2%

Defective Material/Parts2%

Value For Money1%

Quality-Overall1%

Compatibility-Overall1%

Leak-Proof1%

Maintenance And Repair1%

Common questions

Is 3.50-8 tire profitable to sell on Amazon United States?: The niche generates $20K/yr across 28 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is +79.7%. Flapen's verdict: Worth a look (59/100).
How competitive is the 3.50-8 tire niche?: 21 brands and 26 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 62% of demand.
What do buyers complain about in 3.50-8 tire?: Top complaints mined from reviews: Size-Overall, Flatness, Hard Feel. The return rate is 1.9%.
When does demand for 3.50-8 tire peak?: Demand peaks in Apr–May–Jun; the busiest month runs 4.6× the quietest.
What does it cost to enter the 3.50-8 tire niche?: Listings span $7.98–$63.39; the average listing price is $37.06 (sweet spot $15–$100). The average incumbent carries 796 reviews — the moat a new listing must climb.