Traction was the top priority when developing ONZA tires’ tread for wet and muddy conditions. Named after a high alpine plateau in the Swiss Alps, situated at an elevation of about 2000 meters above sea level and littered with numerous creeks and tarns, the GREINA’s wide open knobs find traction even in the worst mud without clogging.
| Part # | Description | Category | Size | Weight | ETRTO | Casing | TPI | Bead | Rubber | Durometer | tech. Notes |
| A1110297 | GREINA | Freeride / DH | 26×2.40 | 1100g | 60-559 | DHC | 40×40 | Steel / Wire | VISCO | GRP-40 | – |
| A1115115 | GREINA | Enduro / Freeride | 27.5×2.40 | 1015g | 61-584 | EDC | 60 | Kevlar / Foldable | RC²55a | 65a/55a | TLR |
| A1115118 | GREINA | Freeride / DH | 27.5×2.40 | 1160g | 61-584 | DHC | 40×40 | Steel / Wire | RC²55a | 65a/55a | – |
| A1115127 | GREINA | Freeride / DH | 27.5×2.40 | 1185g | 61-584 | DHC | 40×40 | Steel / Wire | VISCO | GRP40 | – |
Weights may vary in the range of +/- 8% due to the application of natural resources.