I have both. Personally I like the 18's

I like running 18's. 255/45/18 to be exact

Depends on what youre going for.... I'm running 15's. But also on slicks

I am runnng 17's, 225/45/17.

Stock 17's gsx rims here. No complaints.

The stock rims are 16s so Im thinking of getting 18s

Like 11Banger said, it depends on what you plan on doing with the car. Most drag racers want the lightest rim possible to have a lower rotating mass, so a 15" or 16" would work well. If you are aiming for better handling a 17" or 18" will be better because the tire will have a shorter sidewall.
At the drag strip a lower rotating mass is definitely the way to go. I also have a 2005 Dodge Magnum Rt that I occasionally race and I dropped 2 tenths of a second just by switching from my 20" rims back to the 18" rims that my car came with!

Stock for a gs is 16. Gst and gsx are stock with 17. Most drags will have smaller rims while streets will have larger rims with low profile tires. Depends on your goal.

Silver gryffon said:

Stock for a gs is 16. Gst and gsx are stock with 17.

Click to expand...

GST's never came with 17's. FYI.

18's look great on any 2G, but 17's look great too, and have a little softer ride.

My bad, you're right. Gst's came with 16s. Sorry for the misinfo. Memory failure. Thanks for the correction.

Thanks guys, I dont drag so 18s would be the best option

225/40/18 et38 18"