Honda CRF450F Tire Size
GarageDex's powersports data shows the Honda CRF450F runs a 80/18-21 front tire and a 120/80-19 rear tire.
Tire fitment by year
| Years | Front tire | Rear tire |
|---|---|---|
| 2009 | 80/18-21 | 120/80-19 |
449cc. Tire sizes read as width / aspect ratio - rim diameter. Match all three numbers to the rim.
Tires for your Honda CRF450F
This bike runs a 80/18-21 up front and a 120/80-19 at the rear. Match the size stamped on the sidewall (or shown in the table) - powersports tires are size-specific, so the numbers matter more than the brand.
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Frequently asked
What tire size does a Honda CRF450F use?
GarageDex's powersports data shows the Honda CRF450F runs a 80/18-21 front tire and a 120/80-19 rear tire.
What do the tire numbers mean?
A size like 80/18-21 reads as tread width (mm) / aspect ratio (% of width) - rim diameter (in). Match all three so the tire fits the rim and clears the swingarm and fender.
Can I fit a different tire size?
Stick to the stock size - it's matched to the rim width, speedometer, and handling. A wider tire can rub the swingarm or fender and throws off the speedo, so only deviate on a shop's advice.