A couple of weeks ago I ordered the Trak 4x4 chains for our Model X. At that time the Tesla website said that they were compatible with 19" and 20" wheels on the Model X. When I received them, the Tesla literature included with the chains said they only fit the 19" Cyclone and 20" Helix wheels. Since we have the 20" Silver Cyclone wheels the chains do not fit. I emailed Tesla online sales and brought this to their attention. Since then they have changed the shopping website to say that the chains are only compatible with the 19" Cyclone and 20" Helix wheels. This is good for future buyers of the Model X and the Trak chains, but not so good for me. The main issue is that there is a 21 mm socket installed on the chains that are meant to fit the 21 mm lug nuts on the 19" Cyclone or 20" Helix wheels. The 20" Cyclone uses a lug nut that is larger (it seems to be 1" or about 25 mm). Does anyone know if I can SAFELY use the 21 mm lug nuts with the 20" Cyclone wheel? If so, I can just swap out the lug nuts without having to spend thousands to upgrade to the Helix wheels. The Wheel Lock Set sold on the Tesla shopping website under the Model S tab says that it is compatible with both the Model S and the Model X. This implies that the threads are identical for all the wheels. Is that correct? Any ideas would be appreciated.