6 inch go kart wheels and tires mount any tire whose size code ends in -6, such as 13×5.00-6, 15×6.00-6, or 145/70-6 on yard karts, or 10×4.50-6 and 11×7.10-6 on dirt oval race karts. The 6-inch rim sits between the 5-inch wheels of sprint racing karts and the 8-inch wheels common on full-size yard karts. It suits compact backyard karts, minibike-style builds, many older frames, and dirt oval racing. Before you buy, you need three measurements: how the wheel attaches (bearing bore, keyed hub, or bolt pattern), rim width, and tire size. This guide covers where the size fits, which tires to choose, how to measure fitment, typical costs, and when a bigger wheel makes more sense.
Part of our Go-Kart Parts guide — explore the full guide →
Where 6 Inch Go-Kart Wheels and Tires Fit
The 6-inch rim shows up in two quite different corners of karting.
Recreational and utility karts. Smaller yard karts, kids karts, and minibike-crossover builds often use 6-inch wheels. The size overlaps heavily with lawn tractors, utility carts, and minibikes, so a lot of the parts on the market are labeled for those machines too. In many cases they interchange with kart parts as long as the bore, hub, or bolt pattern matches.
Dirt oval racing karts. Many dirt oval karts run 6-inch racing wheels, usually lightweight aluminum, with treaded or slick racing tires sized much like sprint kart tires but for a 6-inch rim. These are a completely different product from turf tires, built for a specific type of racing, and class rules usually govern which tires you can use. If that is your world, our guide to dirt kart racing explains the classes, chassis, and parts involved in more depth.
Older kart frames also turn up with 6-inch wheels, so if you are restoring one, match what the frame was built for rather than assuming a modern standard.
6-Inch vs 5-Inch vs 8-Inch Wheels
Compared with an 8-inch setup, a 6-inch wheel and its tire usually give a smaller overall diameter. That lowers the kart, reduces weight, and acts like shorter gearing: a little more pull off the line and a little less top speed at the same engine speed. Compared with very small 4-inch and 5-inch utility wheels, the 6-inch size rolls over lawn ruts and gravel more easily.
That makes 6 inches a practical middle ground for compact karts that see some grass and dirt but do not need the clearance of a full-size yard kart. For heavier machines and rougher ground, our guides to 8-inch go-kart wheels and 10-inch go-kart wheels cover the bigger sizes.
Best Go Kart Tires: our top 3 picks
| Product | Best for | Key features | Price | Buy |
|---|---|---|---|---|
| SunF K001 11x7.10-5 slick | Best overall rear slick |
| $77.98as of Oct 26, 2026 5:22 am EDT | Buy now →Check current price |
| SunF K001 10x4.5 front set | Best front slicks |
| $134.96as of Oct 26, 2026 5:22 am EDT | Buy now →Check current price |
| Kemblawolf 5 in wheel set | Best complete 5-inch set |
| $389.89as of Oct 26, 2026 5:22 am EDT | Buy now →Check current price |
Prices are Amazon’s listed prices as of the date and time shown and are subject to change; the price on Amazon at the time of purchase applies. As an Amazon Associate we earn from qualifying purchases.
Tire Options for 6-Inch Rims
Kart and utility tire sizes list the rim diameter last, so you are shopping for sizes ending in -6. If the size codes are new to you, our guide to go-kart tire sizes explains how to read them. The main families are:
Turf tires. Sizes such as 13×5.00-6 and 15×6.00-6 are classic lawn-equipment sizes with shallow, wide tread that does not tear up grass. They ride smoothly and are widely stocked, which keeps them affordable.
Knobby tires. Knobby versions of 13×5.00-6 and the metric 145/70-6 give real bite on loose dirt and trails. The 145/70-6 is especially common on minibikes and small off-road karts.
Sawtooth and rib tires. Angled or ribbed tread blocks that work on both grass and gravel. A sensible default if your kart sees mixed surfaces.
Dirt oval racing tires. Sizes along the lines of 10×4.50-6 for the front and 11×7.10-6 for the rear, built in specific racing compounds. These are only worth considering if you race or have a dirt oval chassis.
Most recreational 6-inch tires run at low pressures. A typical working range is roughly 10 to 20 psi, but always follow the maximum printed on the sidewall, including when seating beads.
Hubs, Bores, and Bolt Patterns
The tire is the easy part. Most fitment mistakes happen at the hub. Six-inch wheels attach in three main ways.
Bearing wheels. The wheel carries its own bearings and spins freely on a fixed axle or spindle bolt. These are common for front wheels and for non-driven rear wheels. Measure the bearing bore, which on small karts is often 5/8 inch or 3/4 inch, and check the hub length so the wheel sits correctly on the spindle.
Keyed hub wheels. A separate hub with a keyway locks the wheel to a live axle so it can drive. Yard karts commonly use 1-inch axles, though other sizes exist, so measure your axle and keyway before ordering.
Bolt-pattern wheels. The wheel bolts to a flanged hub with three or four studs. Bolt circles vary between suppliers, so measure carefully. Our guide to 4-lug go-kart wheels and tires shows how to measure a four-bolt circle.
Also confirm rim width. Six-inch rims come in a range of widths, and each tire size has an approved rim width range from its maker. A tire on a rim far outside that range will not seat or hold its shape properly.
Bearings wear faster than most owners expect, especially on budget wheels. If a wheel feels rough when spun by hand, replace the bearings before the wheel. Our guide to go-kart wheel bearings covers sizes and replacement.
6-Inch Setups Compared
| Setup | Example tire size | Best surface | Common attachment | Typical price per wheel and tire |
|---|---|---|---|---|
| Turf front | 13×5.00-6 | Grass, hard dirt | Bearing wheel | $25–$60 |
| Turf rear | 15×6.00-6 | Grass, hard dirt | Keyed hub or bolt pattern | $35–$80 |
| Knobby off-road | 145/70-6 | Loose dirt, trails | Hub or bolt pattern | $35–$80 |
| Sawtooth mixed-use | 13×5.00-6 | Grass and gravel | Any | $30–$70 |
| Dirt oval racing | 10×4.50-6 / 11×7.10-6 | Prepared dirt ovals | Racing hub | Higher; varies by compound |
Prices are typical USD ranges and move with brand, material, and whether the assembly includes bearings or a hub.
Cost and Considerations
For recreational karts, 6-inch is one of the more affordable wheel sizes because it shares a market with lawn and utility equipment. Complete wheel-and-tire assemblies commonly run about $30 to $80 each, bare tires roughly $20 to $50, and steel rims less than aluminum. Dirt oval racing wheels and tires cost considerably more, and racing tires are consumables that wear with every event.
The biggest hidden cost is buying hardware that does not fit. A wheel with the wrong bearing bore, hub bore, or bolt circle is useless, so measure your axle, keyway, and bolt pattern first. Budget for fresh bearings, valve stems, and possibly inner tubes on older rims that no longer hold an airtight bead.
Also think about ground clearance. Tires on 6-inch rims are usually shorter overall than common 8-inch yard kart tires, which matters on yards with roots, rocks, and ruts.
How to Choose 6 Inch Go-Kart Wheels and Tires
Follow this order and you will avoid most returns.
1. Read the existing size. The size on your current sidewall tells you the rim diameter, the height your frame was set up for, and a sensible width.
2. Identify the attachment. Bearing wheel, keyed hub, or bolt pattern, along with the bore size, axle diameter, and bolt circle.
3. Match tread to surface. Turf for lawns, knobby for loose dirt, sawtooth or rib for mixed use, and the class-approved racing tire for dirt ovals.
4. Keep pairs matched. Run the same size left and right so the kart tracks straight. Narrower fronts and wider rears are normal and help steering.
5. Check clearance. Turn the steering to full lock and check that a new, wider, or taller tire clears the frame, fenders, brake, and chain.
For specific tire picks across sizes and surfaces, see our roundup of the best go-kart tires.
When to Step Up to 8 Inches
Stay with 6-inch wheels when the kart is compact, the rider is lighter, or the frame was designed around them. Consider moving to 8-inch wheels when the kart carries a heavier teen or adult, the terrain is rough, or you want more clearance. Many full-size yard karts already use 8-inch wheels, and the tire selection at that size is broad.
Before upgrading, confirm the frame, fenders, and steering geometry clear the larger tire, and remember that a taller tire acts like taller gearing. You may need a sprocket change to keep acceleration acceptable on a small engine.
Pros and Cons of 6-Inch Wheels
Here is how the 6-inch size stacks up as a platform.
Pros
- Widely available thanks to lawn equipment and minibike crossover
- Lower center of gravity than most 8-inch setups
- Shorter effective gearing helps small engines accelerate
- Good fit for compact karts, kids karts, older frames, and dirt oval chassis
Cons
- Less ground clearance than larger wheels
- Lower top speed at the same engine speed
- Recreational tire choice is narrower than at 8 inches
- Bores and bolt patterns vary, so careful measuring is required
Frequently Asked Questions
What size tires fit a 6 inch go-kart rim?
Are minibike and go-kart 6 inch wheels interchangeable?
What pressure should I run in 6 inch kart tires?
Will 6 inch wheels make my kart slower?
Do 6 inch kart wheels need inner tubes?
Do dirt oval karts use 6 inch wheels?
Final Thoughts
Getting 6 inch go kart wheels and tires right comes down to three measurements, the hub or bore, the rim width, and the tire size code, plus a tread suited to your surface. For compact yard karts, kids karts, minibike-style builds, and dirt oval chassis, the 6-inch size is often the correct choice rather than a compromise. For the rest of the running gear, start at our go-kart parts hub.