Motorcycle Tires by Size
Know your size? Start here. Every size below is one we carry, grouped by rim diameter — pick yours to see the brands and models it comes in.
A motorcycle tire size is three numbers. The first is section width in millimetres, the second is the aspect ratio — sidewall height as a percentage of that width — and the third is rim diameter in inches. So a 180/55-17 is 180 mm across the tread, with a sidewall about 99 mm tall, on a 17-inch wheel.
Your sizes are moulded into the sidewall of the tires already on the bike, and they are usually on the swingarm sticker and in the owner’s manual as well. Front and rear are different sizes on almost every motorcycle, so check both before you order.
Sizes carried by only a model or two are not listed separately — use the search and filters on the main tire page for those, or send us the size and we will source it.
10-inch wheels
1 size12-inch wheels
5 sizes13-inch wheels
1 size14-inch wheels
7 sizes15-inch wheels
2 sizes16-inch wheels
9 sizes17-inch wheels
23 sizes18-inch wheels
16 sizes19-inch wheels
8 sizes21-inch wheels
6 sizesRelated
- Tire size guide — find your size by bike
- The most popular motorcycle tire sizes
- Motorcycle tire pressure, explained
- Tire size decoder tool
- Browse tires by brand
- Tire and wheel service at MTC
Not sure which size you need?
Tell us your year, make and model and we will confirm the right front and rear sizes for your bike.