Because it covers 85% of the vehicles, and the tire sizes we use is almost similar to the OE standard size. So no difference in height by using USW.
Testing resulted in no significant handeling issues.
Yes, it is multi fit through changing the EFS adapter kit, so it will fit on other vehicles also. Example, when you buying a new car you can take your spare wheel with you. Extra advantage and most valuable wholesale effort is big reduction of stock levels.
The wheel has been specially designed to allow this.
All this is simplified in a application file by year, make and model
EFS-system in combination with the 4×17 Aluminium spare wheel is tested according TÜV Rheinland Pfalz / Germany standarts and approved.
It's 50mph or 80km/h (this what we recommend), but we drove 140Km/h and there were no problems and handling of car was