1986 SE, with stock 14" Aluminum wheels. How wide are they ? I dropped 1 off at a garage today to have a used tire installed, just to use as a "roller" & the guy said, "I'll try to get it on, it looks like a *" wheel"! I looked at it & it sure "Looks" wide. I always thought they were only 6" wide. thanks

I believe the fiero sizes are...
13x5.5
14x6
15x7
and 15x6 for 88GT and Formula fronts

[This message has been edited by Fieroseverywhere (edited 02-26-2011).]

If the 14 in wheel has a lip I believe it is a 7 in. wide wheel.

has a lip ! shame it's so hard to get tires. Like the 15 lace wheels a whole lot better, but, I've already "GOT" these. maybe a "different Painting" on them will make them "Look better".

If they are the 14 in "Vegeomatic" (the correct name is "Hi Tech") wheels they look really good mirror polished with the insets painted black or a contrasting color. I believe the correct tire size was 215/60/14.

Just to clarify, rim width is measured on the inside of the bead lip, not the outside lip. Bead lips are frequently about 1/2", so a wheel with an outside dimension of 7" would be a 6" wheel.

No, the lip does NOT mean it's a 7. It means it has the Fiero-specific offset rather than the FWD Pontiac offset. Still 14x6". NOT wide.

I'm sorry I wasn't clear in what I said. Let me try it a different way:

If you can measure the width of the wheel at the rim, the actual wheel width as far as the tire mounting is concerned is the inside width, not the outside width. If the wheel measures 7" across on the outside, and I know the Fiero has about 1/2" thick lips, the nominal width is 6".

That being said, according to the Fiero Online Service Guide http://floridafieros.org/osg/wheels.html the 14" wheels were all 6" wide (7" across outside). I know from experience the offsets are different between the 14x6 Tech wheels used on the Fiero and that same size used on other GMs of the era. The Fiero wheel's hub is more recessed, giving it the appearance of a "lip" whereas the front wheel drive car versions had the hub virtually flush with the bead.

Here is the front wheel drive version:


And the rear wheel drive Fiero version:



Both are the same size.

Note: In the first link, for the OSG, there is an error in the offsets mentioned for the 15x7 lace wheels. Contrary to what the OSG says, all the fiero 15x7 lace wheels have the same offset regardless of year model, and in fact use the same casting part number.

mine looks like the bottom one. I've got 6 and 7 inch rims on my other cars, this on "Appears to be" 8 " outside to outside, so I guess it's a 7. I'll measure it when I pick it up. Funny how much the "Shine" makes it look so much better !

I saw in a buff book and in a listing of those codes in the front hood that some Fieros came with different width wheels for the back. It may only be the 15 inch diamond wheels on the 88's.

The lace wheels on the '88 Formula and GT only were different front to rear. The rears were 15x7, same as previous years. The fronts were new and 15x6. The 14" Tech wheels were the same as previous years as 14x6 front and back.