Thank you this is helpful. My search skills obviously need improvement.
| quote | If you step up to a 5x115 pattern, there are 16x7 wheels from a bonneville available and 16x8 wheels from a Grand Prix available. I am running 5x115 and 16x8 rear with 5x100 and 16x6 LeBaron wheels front. The three different types are all virtually identical. |
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Will,
What all is involved with "stepping up" to a 115x5? Do you have a mod list that is needed to get this to work on an '88? or is there an adapter plate situation that needs to be employed?
Thank you all for the tire suggestions as well. I am looking for best traction possible to take the Fiero out on track days. I am planning a lot with this car

I found lots of threads on tires that fit 15's that discuss the best you can still get. I was looking for wheel options that go 1 or 2 sizes larger and keep the lace that will not wreck the offset to fit best for track day tires. I jumped in on the Fiero before I figured out if it can do what I want. So now I am figuring out how to make it do what I want.
I would prefer to keep original bolt pattern so I can have a set of wheels that are good all seasons on stock rims for normal driving and a set of wheels to put on for track day fun. Track tires are too costly and soft compound to leave on for putting around town on. Plus this opens the conversation for other looking for most current information. Although I am not sure that even getting to a 16 or 17 will open up for good track day tires I will need to look into that a bit more.