TM Racing MX 450 Fi 4T Tire Size
GarageDex's powersports data shows the TM Racing MX 450 Fi 4T runs a 80/100-21 front tire and a 110/90-19 rear tire. Tire sizes vary by year - see the table for each range.
Tire fitment by year
| Years | Front tire | Rear tire |
|---|---|---|
| 2023 | 80/100-21 | 110/90-19 |
| 2020 | 80/100-21 | 110/90-19 |
449cc. Tire sizes read as width / aspect ratio - rim diameter. Match all three numbers to the rim.
Tires for your TM Racing MX 450 Fi 4T
This bike runs a 80/100-21 up front and a 110/90-19 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 TM Racing MX 450 Fi 4T use?
GarageDex's powersports data shows the TM Racing MX 450 Fi 4T runs a 80/100-21 front tire and a 110/90-19 rear tire. Tire sizes vary by year - see the table for each range.
What do the tire numbers mean?
A size like 80/100-21 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.
Do the TM Racing MX 450 Fi 4T tire sizes change by year?
Yes - fitment differs across the years we cover: 2023 runs 80/100-21 front / 110/90-19 rear; 2020 runs 80/100-21 front / 110/90-19 rear. Match your exact year in the table.
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.