Best Mini Bike Tires: 145/70-6, 4.10-6 and 13x4.10-6 Picks
The best mini bike tires: Mopillos 145/70-6 for Coleman B100 and CT100U, FVRITO and GREHUA 4.10/3.50-6 with tubes, a 4-ply GYL and MZREXN 13x4.10-6 tubeless.
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Match the size code on your sidewall first. For Coleman B100, CT100U and CC100X bikes, the Mopillos 145/70-6 is the tire we would buy: tubeless, 14 in (355 mm) outer diameter, 5.4 in wide, listed for those Colemans (per the Amazon listing). For 4.10/3.50-6 wheels, the GREHUA 4.10/3.50-6 comes with a tube and a bent TR87 valve.
Picks were compared on size, construction, included tube and listed fitment. Coleman's CT200U owner's manual sets its CT200U tires at 10 psi front and rear, plus or minus 0.5 psi.
Our top picks at a glance
1. Best for Coleman B100
Mopillos 145/70-6 tubeless tireSize: 145/70-6 · Outer diameter: 14 in · Type: Tubeless · Warranty: 1 month
2. Best 4.10-6 with tube
GREHUA 4.10/3.50-6 tire and tubeSize: 4.10/3.50-6 · Outer diameter: 12 in · Type: Tube type · Warranty: Not stated
3. Best kit with valve tools
FVRITO 4.10/3.50-6 tire and tubeSize: 4.10/3.50-6 · Outer diameter: Not stated · Type: Tube type · Warranty: Not stated
4. Best heavy duty
GYL 4.10/3.50-6 tire and tubeSize: 4.10/3.50-6 · Outer diameter: Not stated · Type: Tube type, 4-ply · Warranty: Not stated
5. Best tubeless pair
MZREXN 13x4.10-6 tubeless tires (2)Size: 13x4.10-6 · Outer diameter: 13 in · Type: Tubeless, 4-ply · Warranty: None listed
| Pick | Size | Outer diameter | Type | Warranty | Buy |
|---|---|---|---|---|---|
| Mopillos 145/70-6 tubeless tireBest for Coleman B100 | 145/70-6 | 14 in | Tubeless | 1 month | Amazon |
| GREHUA 4.10/3.50-6 tire and tubeBest 4.10-6 with tube | 4.10/3.50-6 | 12 in | Tube type | Not stated | Amazon |
| FVRITO 4.10/3.50-6 tire and tubeBest kit with valve tools | 4.10/3.50-6 | Not stated | Tube type | Not stated | Amazon |
| GYL 4.10/3.50-6 tire and tubeBest heavy duty | 4.10/3.50-6 | Not stated | Tube type, 4-ply | Not stated | Amazon |
| MZREXN 13x4.10-6 tubeless tires (2)Best tubeless pair | 13x4.10-6 | 13 in | Tubeless, 4-ply | None listed | Amazon |
Best for Coleman B100
Mopillos 145/70-6 tubeless tire
For Coleman CT100U, CC100X, B100 and Baja Doodle Bug owners.
- Size
- 145/70-6
- Outer diameter
- 14 in
- Type
- Tubeless
- Warranty
- 1 month
Pros
- Listed for Coleman CT100U, CC100X, B100
- 5.4 in wide
Cons
- 1-month warranty
Mopillos lists 355 mm (14 in) outer diameter, 152 mm (6 in) inner diameter, 136 mm (5.4 in) width and fit for the Coleman CT100/CC100X/CT100U, RB100 and B100, Motovox MBX10 to MBX12 and Baja Doodle Bug DB30 (per the Amazon listing).
Best 4.10-6 with tube
GREHUA 4.10/3.50-6 tire and tube
For 4.10/3.50-6 rims on mini bikes and karts.
- Size
- 4.10/3.50-6
- Outer diameter
- 12 in
- Type
- Tube type
- Warranty
- Not stated
Pros
- Bent TR87 valve stem
- Deep knobby tread
Cons
- Tube type: more flats than tubeless
GREHUA lists a 4.10/3.50-6 tire for 6 in rims with a 12 in outer diameter and 4.10 in width, a thickened inner tube with a TR87 bent valve and a knobby tread (per the Amazon listing).
Best kit with valve tools
FVRITO 4.10/3.50-6 tire and tube
For owners who want spare valve cores.
- Size
- 4.10/3.50-6
- Outer diameter
- Not stated
- Type
- Tube type
- Warranty
- Not stated
Pros
- Valve core wrench and spare cores included
- 6 in rim
Cons
- Diameter not listed
FVRITO lists a 4.10-6 tire and inner tube for 6 in rims with a valve core wrench, two brass valve cores and caps (per the Amazon listing).
Best heavy duty
GYL 4.10/3.50-6 tire and tube
For rocky ground and heavier karts.
- Size
- 4.10/3.50-6
- Outer diameter
- Not stated
- Type
- Tube type, 4-ply
- Warranty
- Not stated
Pros
- 4-ply nylon casing
- Rated -20 to 150 F (listing)
Cons
- Stock is scarce
GYL lists a 4.10/3.50-6 tire and tube with a reinforced 4-ply nylon casing, UV-treated rubber and a -20 F to 150 F range, as a replacement for 13x4.00-6 sizes too (per the Amazon listing).
Best tubeless pair
MZREXN 13x4.10-6 tubeless tires (2)
For go-karts that need two matched tubeless tires.
- Size
- 13x4.10-6
- Outer diameter
- 13 in
- Type
- Tubeless, 4-ply
- Warranty
- None listed
Pros
- 672 lb load per tire
- Pair of two, 0.5 in tread depth
Cons
- Snow blower style tread, not a knobby
MZREXN lists two 13x4.10-6 tubeless 4-ply tires with a 13 in outer diameter, 4.1 in section width, 0.5 in tread depth, 24 psi and a 672 lb (305 kg) load capacity (per the Amazon listing).
Reading mini bike tire sizes
A 145/70-6 tire is 145 mm wide, its sidewall is 70% of that width, and it fits a 6 in rim. A 4.10/3.50-6 tire is about 4.10 in wide on a 6 in rim. A 13x4.10-6 tire is 13 in tall, 4.10 in wide, for a 6 in rim. Bigger 19x7-8 tires on bikes like the Trailmaster MB200X fit 8 in rims.
| Size code | Outer diameter | Rim | Example fit |
|---|---|---|---|
| 145/70-6 | 14 in | 6 in | Coleman B100, CT100U, CC100X |
| 4.10/3.50-6 | 12 in | 6 in | Many mini bikes and karts |
| 13x4.10-6 | 13 in | 6 in | Go-karts, lawn equipment |
| 19x7-8 | 19 in | 8 in | Trailmaster MB200X, karts |
Tire size changes speed
A smaller tire lowers top speed at the same gearing: at 3,600 RPM with 10/60 sprockets, a 19 in tire gives 33.9 mph and a 14 in tire 25.0 mph by the top speed calculator.
Pressure and checks
Coleman's CT200U runs 10 psi front and rear, plus or minus 0.5 psi, measured cold. Its pre-ride list checks pressure, tread depth and cracked rubber, and its manual warns that the tires are for off-road use. MZREXN lists 24 psi for its tubeless kart tires; follow your bike or tire maker.
What to skip
Skip a tire whose size code does not match your rim, skip mixing very different diameters front and rear unless the bike came that way, and skip pavement riding, which Coleman's manual says to avoid. More Coleman parts: Coleman mini bike parts. Bearings and stands make tire swaps easier: dirt bike stands.
Frequently asked questions
What size tire is on a Coleman mini bike?
Coleman B100, CT100U and CC100X bikes use 145/70-6, per the Mopillos listing. Check the sidewall of your own tire before ordering.
What does 4.10/3.50-6 mean?
The tire is about 4.10 in wide (also sold as 3.50) and fits a 6 in rim. GREHUA lists a 12 in outer diameter for its 4.10/3.50-6.
What tire pressure should a mini bike run?
Coleman's CT200U manual says 10 psi front and rear, plus or minus 0.5 psi, cold. Use your own bike's figure if its manual differs.
Are tubeless mini bike tires better?
Tubeless tires like the Mopillos 145/70-6 avoid pinched tubes, but need a rim that seals. Tube-type tires like the GREHUA 4.10/3.50-6 fit split and older rims.
Will smaller tires make my mini bike slower?
Yes, at the same gearing. A 14 in tire gives 25.0 mph against 33.9 mph for a 19 in tire at 3,600 RPM with 10/60 sprockets, by our calculator.
Sources
- Coleman Powersports CT200U Owner's Manual, Coleman Powersports
- All-Terrain Vehicle Safety, U.S. Consumer Product Safety Commission
Cover image: Illustration: Mini Bike Review (AI-generated)
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