OK
from what i undertstand so long as you dont have the brembo brakes (SRT)
the 18" spare will work just fine on the RT even one that came with 20s
i believe the 18" spare is as tall or nearly as tall as the 20s with the stock
low profile tires.
the only probelm that some guys spoke of on another site was this it could
possibly mess up the rear gear and that they would pull a front wheel and
swap it to the rear if the flat was out back.
im sure if you look up your car that the 18" spare was an option even with the 20s
and since it is nearly the same size height due to the tires side wall height i dont see
where there would be a gear issue especially since the space saver is there to get you
to the nearest tire store at no more than 50 and not take you across country at 70
from what i undertstand so long as you dont have the brembo brakes (SRT)
the 18" spare will work just fine on the RT even one that came with 20s
i believe the 18" spare is as tall or nearly as tall as the 20s with the stock
low profile tires.
the only probelm that some guys spoke of on another site was this it could
possibly mess up the rear gear and that they would pull a front wheel and
swap it to the rear if the flat was out back.
im sure if you look up your car that the 18" spare was an option even with the 20s
and since it is nearly the same size height due to the tires side wall height i dont see
where there would be a gear issue especially since the space saver is there to get you
to the nearest tire store at no more than 50 and not take you across country at 70