Yamaha YZ 85LW Tire Size
GarageDex's powersports data shows the Yamaha YZ 85LW runs a 70/100-19 front tire and a 90/100-16 rear tire. Tire sizes vary by year - see the table for each range.
Tire fitment by year
| Years | Front tire | Rear tire |
|---|---|---|
| 2021 | 70/100-19 | 90/100-16 |
| 2010 | 70/0-M17 | 90/0-M14 |
85cc. Tire sizes read as width / aspect ratio - rim diameter. Match all three numbers to the rim.
Tires for your Yamaha YZ 85LW
This bike runs a 70/100-19 up front and a 90/100-16 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 Yamaha YZ 85LW use?
GarageDex's powersports data shows the Yamaha YZ 85LW runs a 70/100-19 front tire and a 90/100-16 rear tire. Tire sizes vary by year - see the table for each range.
What do the tire numbers mean?
A size like 70/100-19 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 Yamaha YZ 85LW tire sizes change by year?
Yes - fitment differs across the years we cover: 2021 runs 70/100-19 front / 90/100-16 rear; 2010 runs 70/0-M17 front / 90/0-M14 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.