What wheel size should I use on my '04 coupe?

The stocks are 18... I like the stock look.

I'd stick with the 18's. 19's and 20' are heavier and will make your car less pleasant for everyday use, and require more expensive tires.

19" don't offer much tire cushion on potholes. be prepared to have dents in your rims. I wish I had 18" wheels.
2006 Coupe CC

it really depends on what look you want and the conditions in your area. bumping eastcoast city smaller wheels are better.

xraygun said:

19" don't offer much tire cushion on potholes. be prepared to have dents in your rims. I wish I had 18" wheels.
2006 Coupe CC

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wanna trade? I have stock 18s on my 06 coupe with 5k miles.

Funny, I have 19's as they were the only option available. If I bought another car and had the choice, I'd go for 18s.

I wouldn't trade my current 19's though: "it's better to look good than to feel good" in Billy Crystal's words.

IS the Trofeo or GS wheel available in 18?

And what is meant by offset? Is this made to fit the car for each wheel size or how does it work if I want to replace my stock 18 with a better looking 18; is it JUST an even swap out or more to it?

no 18 trofeo :[

No Trofeo in 18, so what would you buy?

open to suggestions; like the Trofeo/GS wheel but not in 18 size......

dogdoc said:

And what is meant by offset? Is this made to fit the car for each wheel size or how does it work if I want to replace my stock 18 with a better looking 18; is it JUST an even swap out or more to it?

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Offset is how far inside or outside the centerline of the rim the hub is placed. You will want to get this right so it looks right and to be sure it clears the calipers. I don't know the proper dimensions for Maseratis, but I do know that you will want to find out before buying any aftermarket wheels. You'll also need to know the bolt pattern.