[ashish22]

while ordering i did not choose the tires so i was wondering what would be the default tire size that i get with the 2015 X3 28i.

i live in new england and was wondering is 17" wheels are an option.

[fjrmann]

Most likely to have 18" rims.

[ashish22]

if i do change the tires from run flat to regular tire but same size as original will there be any issues with tpms or other car systems and also will that void bmw warranty

[02420X3]

Why change? The RFTs are perfectly fine. Are you Leasing or Buying? If you are Leasing then check the terms of your agreement to determine what tires must be on the car when you return it.

[Scandic24]

Originally Posted by ashish22

if i do change the tires from run flat to regular tire but same size as original will there be any issues with tpms or other car systems and also will that void bmw warranty

TPMS-sensors can not sense which type of tire it is. They are screwed onto the rim itself. It only provide tire pressure and temp data to the car.
The sensors will have to be changed after a no of years, i.e. when the battery in the sensor runs down.

[Peter_R]

Originally Posted by ashish22

if i do change the tires from run flat to regular tire but same size as original will there be any issues with tpms or other car systems and also will that void bmw warranty

It will not void warranty. How can it do so?