GRAM LIGHTS 57DR & 57CR Knurling Finish!
The popular gram LIGHTS model 57DR and 57CR is receiving a feature update! As of January 2023: Starting with production of new orders, the 57DR and 57CR will now feature a knurling finish on all sizes. Please note: inventory situations may vary. Depending on certain sizes, knurling and non-knurling specifications may be mixed. Thank you for your understanding.
Knurling finish provided at the bead seat sections suppresses shift of the wheels and tires that often occurs when large traction is applied and minimizes the traction loss and changes in the tire balance.