Pretty sure you don't need run flat because an authorize dealer is selling winter packages with non run flats snow tires. I purchased it and will have it installed this month.I am getting the run around from my dealer on installing my after market rim/tires from my G37: 225/55/17 Goodyear Ultragrip Ice. They hooked up terrific in the ice, slush and snow.
The dealer tells me the bolt package is the same as Q50 AWD, but none of the sensors will work. I get that the tire pressure sensor wont work...but they tell me all the other sensors will flash error messages (ABS, Traction Control, etc.)
Also they suggest the car wont handle properly without run flat tires?
What's the real facts/scoup?