[OliverB]

That has been a common practice on the 451 smarts but not so on the 453s. Most folks are satisfied with the handling with the staggered tire size. You could install the wheels and tire size found on the Prime model that also has a the lowered suspension.

 

[OliverB]

I totally agree, don’t do it. As the owner of two different smarts over the past 9 years - 451 & 453 - it’s really not that big of a deal living with different size tires front/rear. Many have done the switch on the 451s but things are different with the 453s. Relax and enjoy the handling of your Prime.