100/100-18 Motorcycle Tires
11 models in 100/100-18, from 6 brands we stock. Order online for delivery, or have them fitted at the shop in Orange.
What 100/100-18 means
100 is the section width in millimetres, measured across the tread. 100 is the aspect ratio: the sidewall is 100% of the section width, which works out to roughly 100 mm here. 18 is the rim diameter in inches — the wheel this tire mounts on.
On most motorcycles a 100/100-18 is a front tire.
The sizes listed for each model are the sizes it is made in. Confirm against the size on your own bike before ordering — wheel swaps change fitment.Every 100/100-18 tire we stock
Dunlop's latest-gen motocross tire built for mixed terrain dominance — from hardpack to soft loam, front and rear, youth to full-size.
Dunlop's latest-gen motocross tire built for mixed terrain dominance — from hardpack to soft loam, front and rear, youth to full-size.
Built for motocross racers and aggressive trail riders who need reliable, consistent grip across changing terrain conditions throughout a full moto or ride.
Dunlop's purpose-built motocross tire engineered for intermediate-to-hard terrain — where hardpack grip, knob durability, and slide control decide motos.
Dunlop's purpose-built motocross tire engineered for intermediate-to-hard terrain — where hardpack grip, knob durability, and slide control decide motos.
Best suited to motocross and off-road riders who spend most of their time on intermediate-to-hard terrain and demand predictable slide with lasting knobs.
A competition-bred motocross tire engineered for hard-pack and intermediate terrain — built for riders who race, not just ride.
A competition-bred motocross tire engineered for hard-pack and intermediate terrain — built for riders who race, not just ride.
The MC360 Mid-Hard is purpose-built for motocross racers and hard-terrain trail riders who need durable, consistent grip on compact and intermediate surfaces.
Metzeler's purpose-built intermediate-terrain motocross tire — engineered for loamy soil, soft dirt, and everything in between.
Metzeler's purpose-built intermediate-terrain motocross tire — engineered for loamy soil, soft dirt, and everything in between.
Built for weekend trail riders and amateur MX competitors who need confident, predictable grip on soft-to-intermediate dirt conditions.
Pirelli's purpose-built hard-pack off-road tire — built for desert runners, enduro racers, and rocky single-track where durability counts.
Pirelli's purpose-built hard-pack off-road tire — built for desert runners, enduro racers, and rocky single-track where durability counts.
The Scorpion XC Mid Hard is built for desert and hard-pack riders who need a durable, consistent tire that outlasts softer compounds on abrasive terrain.
A sand-and-mud specialist built for desert racers and hare scrambles competitors who need instant hookup and aggressive self-cleaning in the softest conditions.
A sand-and-mud specialist built for desert racers and hare scrambles competitors who need instant hookup and aggressive self-cleaning in the softest conditions.
Built for desert racers and soft-terrain competitors who need aggressive self-cleaning traction — not a street tire by any measure.
A purpose-built intermediate terrain motocross tire built for riders who face changing conditions from gate drop to checkered flag.
A purpose-built intermediate terrain motocross tire built for riders who face changing conditions from gate drop to checkered flag.
Best suited for motocross racers and aggressive trail riders who regularly face mixed or transitional soil conditions and need a tire that holds up all day
A hard-pack and intermediate-terrain motocross tire built for riders who want FIM-legal race performance without the factory-team price tag.
A hard-pack and intermediate-terrain motocross tire built for riders who want FIM-legal race performance without the factory-team price tag.
The Washougal III is the go-to choice for club racers and serious trail riders who spend most of their time on intermediate-to-hard terrain and need race-legal durability at a competitive price.
A race-ready motocross tire built for youth riders on 65cc–150cc machines tackling soft-to-intermediate terrain with confidence.
A race-ready motocross tire built for youth riders on 65cc–150cc machines tackling soft-to-intermediate terrain with confidence.
Best suited for youth motocross and trail riders on 65cc–150cc bikes who need honest race performance on soft-to-intermediate terrain without overspending.
A competition-bred, DOT-legal dual sport tire built for medium to hard-pack dirt — with just enough street compliance to get you to the trailhead and back.
A competition-bred, DOT-legal dual sport tire built for medium to hard-pack dirt — with just enough street compliance to get you to the trailhead and back.
Best suited for enduro and trail riders on medium to hard-pack terrain who need DOT compliance for occasional pavement connections — not a commuter or highway tire
Mitas' hardpack-focused competition enduro tire — built for desert racers and dual sport explorers who live 80% in the dirt.
Mitas' hardpack-focused competition enduro tire — built for desert racers and dual sport explorers who live 80% in the dirt.
Best suited for enduro racers and serious dual sport riders who spend most of their miles on hardpack, desert, and rocky trails.
Brands that make a 100/100-18
Other common sizes
Running a different size front and rear? These are the other sizes we stock, closest wheel diameter first.
Before you buy
- When to replace your motorcycle tires
- How long do motorcycle tires last?
- Reading the DOT date code on a tire
- Setting motorcycle tire pressure
- Bias-ply vs radial motorcycle tires
- Why tire balancing matters
Fitting a 100/100-18 at MTC
We mount and balance every tire we sell, and tires you bring in. Walk-ins welcome at the Orange shop, or book a slot so the bay is ready when you arrive.