Triumph Trophy 900 Tire Size
GarageDex's powersports data shows the Triumph Trophy 900 runs a 120/70-17 front tire and a 170/60-17 rear tire. Tire sizes vary by year - see the table for each range.
Tire fitment by year
| Years | Front tire | Rear tire |
|---|---|---|
| 2002 | 120/70-17 | 170/60-17 |
| 1991-1992 | 120/70-17 | 160/60-18 |
885cc. Tire sizes read as width / aspect ratio - rim diameter. Match all three numbers to the rim.
Tires for your Triumph Trophy 900
This bike runs a 120/70-17 up front and a 170/60-17 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.
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Frequently asked
What tire size does a Triumph Trophy 900 use?
GarageDex's powersports data shows the Triumph Trophy 900 runs a 120/70-17 front tire and a 170/60-17 rear tire. Tire sizes vary by year - see the table for each range.
What do the tire numbers mean?
A size like 120/70-17 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 Triumph Trophy 900 tire sizes change by year?
Yes - fitment differs across the years we cover: 2002 runs 120/70-17 front / 170/60-17 rear; 1991-1992 runs 120/70-17 front / 160/60-18 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.