[jmartinsmart]

Okay, I have to jump in with my vote... Don't do it. Without going into a lot of detail here, I'll just put a link to my reason. Mixing front and rear sizes outside of the smart factory specifications on the 453 is a recipe for traction control disaster.

Larger Tires

Hi, does anyone know for sure if 205-50-15 will fit up front? ...this is why: These tires although they look good, and would grip the road nicely, only come with 6/32 tread with to start with. This is about half the tread of a normal tire. Also the compound of the tire is very soft for road...

www.smartcarofamerica.com

Just sayin'
Jim

 

[jmartinsmart]

I should add that turning Traction Control off in the 453 is not as simple as pulling a specific fuse, like on many other cars.

As I understand it there are a couple fuses that must be interrupted and the result is you loose all safety features, including anti-lock brakes, cross-wind assist, and more. If you could break out the TCS by itself, I'd take that risk.

Jim