90/90-18 Motorcycle Tires
9 models in 90/90-18, from 6 brands we stock. Order online for delivery, or have them fitted at the shop in Orange.
What 90/90-18 means
90 is the section width in millimetres, measured across the tread. 90 is the aspect ratio: the sidewall is 90% of the section width, which works out to roughly 81 mm here. 18 is the rim diameter in inches — the wheel this tire mounts on.
On most motorcycles a 90/90-18 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 90/90-18 tire we stock
Bias-ply performance with modern wet-grip technology — purpose-built for retro and modern classic bikes that demand both period-correct style and real-world safety.
Bias-ply performance with modern wet-grip technology — purpose-built for retro and modern classic bikes that demand both period-correct style and real-world safety.
The Road Classic is the go-to tire for modern classic and retro-styled bike owners who ride in all conditions and won't compromise the look of their machine for grip.
Metzeler's refined sport-touring tire engineered for high-mileage street riders who demand all-weather confidence without giving up spirited handling.
Metzeler's refined sport-touring tire engineered for high-mileage street riders who demand all-weather confidence without giving up spirited handling.
The Roadtec 01 is built for serious street miles — ideal for Orange County riders who split time between the 55 freeway and Ortega Highway without swapping tires.
Michelin's reinforced urban commuter tire built for scooters and small-displacement bikes that need all-weather reliability and puncture protection mile after mile.
Michelin's reinforced urban commuter tire built for scooters and small-displacement bikes that need all-weather reliability and puncture protection mile after mile.
Best suited to scooter and small-bike commuters who prioritize puncture resistance, all-weather confidence, and long tread life over outright performance.
Metzeler's premium bias-ply touring tire — built for classic bikes, all-weather commuters, and riders who demand modern grip from traditional construction.
Metzeler's premium bias-ply touring tire — built for classic bikes, all-weather commuters, and riders who demand modern grip from traditional construction.
The Lasertec is the go-to choice for classic and vintage bike owners who need modern wet-weather grip and long mileage in a bias-ply fitment.
Brands that make a 90/90-18
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 90/90-18 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.