Due to having a few too many problems with 20' rims on my sc430, I have been riding on the stock wheels for about a year. Recently, I just picked up a set of 18' volk rims and just got them put on this past weekend. Although it isn't quite the look I would normally go for, I think these rims look pretty good on the vehicle. I thought I'd share a few photos before and after:

 

While the style of wheel is nice the offset makes them look really sunk in.

 

What problems were you having with the 20" wheels. I'm planning an upgrade from the 18".

 

...yea i was a little curious about that myself, since I'm still debating between 18's or 20's

 

Paint the wheels , black color

 

I like the second set better. they look good. the 20" just look to big and I don't like that low profile tires.

 

20s looked amazing... but you do what you gotta do sometimes.

 

T119, still wondering what sort of problems you had? Rough ride? Rubbing in the wheel wells? Would appreciate any insight. Thanks ;-)

 

With the 20' wheels on the car, I had trouble with rubbing that caused me to go through tires like nobody's business. In addition, the ride is much smoother with 18" wheels IMO.

 

I like the look of your 20"s but seem a bit large and you don't like the ride.

The 18" seems too small and has the wrong offset for our cars. There are a lot of threads here about wheeels and offsets - see the table posted by Talwang. I am very happy with my 19" Forgestar wheels - could have gone with a bit more offset but the ride is great and the look close enough. Lighter than OEM too.

 

Were your fenders rolled?

 

19's are perfect for the SC's....

 

...could have been a combination of a few things. There are alot of members that are running 20's without any rubbing issues. Usually the biggest issue or complaint, is the ride being a little harsh, but I think a good set of coilovers or even going airride would solve that. I'm still debating going up to 20's myself. I'm currently running staggered 18's with 20(f) / 25(r) offsets, I have a good look & ride,so thats the only thing thats kept me from going to the 20's...but it's still on my mind

 

You can run 20's without an issue as long as you use the correct widths and offsets. Ride quality has more to do with the aspect ratio you need to run with the 20's rather than the suspension. Suspension has a little impact, but running a 25 or 30 series narrow tire is the main issue. 19's offer the best compromise since you can run a 35 series tire. I'm running 30 series tires but they are 265 front and 285 rear so I have plenty of sidewall to maintain ride quality while increasing handling.

 

..thanx Mark for finishing my thought. I think I assumed that the tire equation wasn't a factor, but probably played the biggest part in it. I'm running 40 series on the front & 35 series on the back of my setup now. I would probably go 35 & 30 on 20 inch setup