CAN bus bit timing with 16 MHz crystal
The other side can't tell you how many time quanta to use for various parts of the bit.  It can only tell you the bit rate you must adhere to.

Pick a set of time quanta close to what they use but that still comes out to the specified bit rate, and all will be fine.  Consider their time quanta "spec" as merely them telling you how their implementation works, not what you have to do.