Pros and cons of bigger wheels, 18" decision Options

[Nihil]

Ok, currently I got 7Jx16" wheels with 205/50R16 tires. This my winter set, but since the winter is almost over and I don't have a set of summer tires, I'm thinking about buying a second set of wheels. I fount used 8Jx18" O.Z. racing Hydra that are quite cheap, but now I want to know, how will this affect mi ride?

I've seen 6G Celicas on wheels from 14" to 19", how are your experiences with different diameters? Are 18" wheels too much, if the roads are a bit bumpy and there are some potholes and cracks and such?

I wanna hear some pros and cons that can help me decide if 18" are suitable for me Thanks

[Nial]

I have run a few sizes of 18" wheels, all ET35 offset, 18x9 which where fine with 225/40 tyres, very slight rubbing from the rears when going over large bumps, I now run 18x7.5 alloys, again with 225/40 tyres, still no problems, thats with normal suspension, you do not need coilovers to run 18" wheels.

They tramline slightly but not really noticeable.

I have also run 18" wheels with 225/35 tyres, I found them a little harsh on ride comfort, but christ they handled well.

If you have lots of potholes, run 225/40s or stick with 17s or 16s