Beta 390 RR Race Tire Sizes
The Beta 390 RR Race has used 90/90-21 front and 140/80-18 rear sizes across model years. Match your year in the table below, then shop the tires we stock in your exact sizes.
| Years | Front | Rear |
|---|---|---|
| 2018–2026 | 90/90-21 | 140/80-18 |
| 2025–2026 | 90/90-21 | 140/80-18 |
We're restocking tires for the Beta 390 RR Race. Browse all tires or use the bike finder there.