Tire Sizes
Stock ONYX front and rear tires are 3.0" wide with 3.0" tall sidewalls on a 17" rim, giving a total diameter of 23". The front forks can accommodate up to a 3.5" wide tire with a 2.8" tall sidewall, while the rear swingarm can fit up to a 3.9" wide tire with a 3.1" tall sidewall.
Taller Front Fork Stabilizer
Front tires taller than 3.1" require a taller front fork stabilizer.
Rear Swing Arm by ONYX Motors
Rear tires wider than 4" require the new ONYX Motors wider or extended swingarm.
Tire Clearance
Tire clearances are provided for both inch and millimeter-based measurements. A green checkmark on “front” indicates that the tire brand and size fit the front fork stabilizer and forks without clearance issues, while a green checkmark on “rear” means they fit the rear swingarm without modifications.
Tire Clearance in Inches
| Rim | Tire | Size | Front | Rear |
|---|---|---|---|---|
| 17" | Michelin Extra | 2.75" | ✅ | ✅ |
| 17" | Continental ContiStreet | 3.0" | ✅ | ✅ |
| 17" | Shinko 241 | 2.75" | ✅ | ✅ |
| 17" | Shinko 241 | 3.0" | ✅ | ✅ |
| 17" | Shinko 244 | 3.0" | ❌ | ✅ |
| 18" | Shinko 244 | 3.0" | ❌ | ✅ |
Shinko 244 3.0" in 17" and 18" require a taller aftermarket front fork stabilizer for proper clearance. A red cross means the tire won’t fit without extensive modifications, such as installing a wider or extended rear swingarm from ONYX Motors.
Tire Clearance in Millimeters
| Rim | Tire | Size | Front | Rear |
|---|---|---|---|---|
| 17" | Pirelli Diablo | 80/90 | ✅ | ✅ |
| 17" | Pirelli Angel | 80/90 | ✅ | ✅ |
| 17" | Michelin Extra | 80/90 | ✅ | ✅ |
| 17" | Michelin Pilot 2 | 90/80 | ✅ | ✅ |
| 17" | Michelin Pilot 2 | 100/80 | ❌ | ✅ |
| 17" | Michelin Pilot 2 | 110/70 | ❌ | ❌ |
| 18" | Michelin Pilot 2 | 90/90 | ❌ | ✅ |
| 18" | Continental ContiStreet | 90/90 | ❌ | ✅ |
Tire Inches, Millimeter & Ratio
Tires measured in millimeters follow a system, where the sidewall height is determined by a percentage of the tire’s width, known as the aspect ratio. This allows for greater flexibility in tire sizing.
This table converts the first millimeter value to tire width in inches and the second ratio value to sidewall height in inches.
- First Number: Tire width in millimeters
- Second Number: Ratio percentage of the width for sidewall height
| Rim | Size | Width | Sidewall | Diameter |
|---|---|---|---|---|
| 17" | 70/90 | 2.8" | 2.5" | 22" |
| 17" | 70/100 | 2.8" | 2.8" | 22.5" |
| 17" | 80/90 | 3.1" | 2.8" | 22.7" |
| 17" | 90/80 | 3.5" | 2.8" | 22.7" |
| 17" | 100/80 | 3.9" | 3.1" | 23.3" |
| 17" | 90/90 | 3.5" | 3.2" | 23.4" |
| 17" | 100/90 | 3.9" | 3.5" | 24.1" |
| 17" | 110/100 | 4.3" | 4.3" | 25.7" |
| 18" | 90/80 | 3.5" | 2.8" | 23.7" |
| 18" | 90/90 | 3.5" | 3.2" | 24.4" |
| 18" | 110/100 | 4.3" | 4.3" | 26.7" |