I'm planning on getting 18" chrome iroc wheels but I'm still not sure. Is there a big difference between 16 and 18, or 17 and 18?

 

hmm... i'd say about 2 inches or so.

 

Do you mean by the look of them or a drivability? The difference in the look should be obvious when you compare the two on a car side by side. Search the boards for pics. Some people like the look of a bigger wheel with a smaller sidewall tire, some dont. Its really up to you. As for drivability, the bigger the wheel gets the rougher the ride. Because the sidewall of the tire gets smaller to accomidate the overall dimensions of the wheel (in relation to the OEM sizes), there is less rubber to absorb impact meaning you feel it in the seat. The other thing about going with a smaller sidewall is the gap between the fender and the tire becomes more pronounced. You will find yourself wanting to lower the car more and more every time you look at it. I'm running 18's and I'm really happy with them.

 

Thanks for the reply.

 

In my opinion, 3rd gens don't look right without a nice size sidewall. I prefer 16", I would go max at 17". I wouldn't even think about putting on 18". They just look real funny on our cars. Just take a look at the 20" chrom IROC wheels on a few of the cars on this site, it looks like a big toy or a joke. Some people might like it, but I think they look funny.