Triumph Bonneville Bobber Tire Size
GarageDex's powersports data shows the Triumph Bonneville Bobber runs a MT90-B16 front tire and a 150/80-R16 rear tire. Tire sizes vary by year - see the table for each range.
Tire fitment by year
| Years | Front tire | Rear tire |
|---|---|---|
| 2021-2023 | MT90-B16 | 150/80-R16 |
| 2018-2020 | 100/90-19 | 150/80-R16 |
| 2017 | 100/90-19 | 150/80-16 |
1200cc. Tire sizes read as width / aspect ratio - rim diameter. Match all three numbers to the rim.
Tires for your Triumph Bonneville Bobber
This bike runs a MT90-B16 up front and a 150/80-R16 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 Triumph Bonneville Bobber use?
GarageDex's powersports data shows the Triumph Bonneville Bobber runs a MT90-B16 front tire and a 150/80-R16 rear tire. Tire sizes vary by year - see the table for each range.
What do the tire numbers mean?
A size like MT90-B16 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 Bonneville Bobber tire sizes change by year?
Yes - fitment differs across the years we cover: 2021-2023 runs MT90-B16 front / 150/80-R16 rear; 2018-2020 runs 100/90-19 front / 150/80-R16 rear; 2017 runs 100/90-19 front / 150/80-16 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.