ok. everyone that knows help me out here. i keep searching threads and find various answers..."it won't work" "it will work"....so. please, Pm me the wheel sizes with offsets and tire sizes as well that are known to work. with stock struts and with coilovers. i'll keep updating this to list all that you guys give me!

ok. first post is up! thank you for the info...i'm going to keep the ones that don't require any spacers or longer studs.

so...

19" wheels, 84-87 model years;

19 x 8.5 with a 235/35 tire and +35 mm offset, front and rear (front sticks out slightly)


18" wheels, 84-87 model years;

18 x 7.5 with 245/45 tire and +40mm offset (front)
18 x 7.5 with 275/40 tire and +40mm offset (rear) - (coilovers)
18 x 8 with 225/40 tire and +42 offset (all four corners)


17" wheels, 84-87 model years;

17 x 7.5 with a 215/45 tire and +40 mm offset (front)
17 x 7.5 with a 235/45 tire and +40 mm offset (rear)
17 x 8 with a 225/45 tire and +35mm offset (front)
17 x 8 with a 255/40 tire and +35mm offset (rear)
17 x 7 with a 225/45 tire and +38mm offset (front)
17 x 8 with a 255/40 tire and +38mm offset (rear)

16" wheels, 84-87 model years;


...do all of these sizes fit the 88's too? i would think they do. right?

17" wheels, 88 model years;

17 x 7 with a 235/45/17 tire and +40mm offset (rear)
17 x 7 with a 215/45/17 tire and +40mm offset (front)
17 x 8 with a 235/45/17 tire and +35mm offset (rear)
17 x 8 with a 245/45/17 tire and +35mm offset (rear)
17 X 7 with a 215/45/17 tire and +48mm offset (front) **1.5" lowered will clear LCA. lower may interfere?

[This message has been edited by shawnkfl (edited 06-11-2007).]

19x8.5s with a 235/35 nitto tire and +35 mm offset work for the back with room on a stock 85gt, same with front but sticks out slightly. 19x9.5 with a 245/35 nitto tire and +35mm offset rubs the stock strut and sticks out slightly but with a little clearancing, I think it looks great.

this is with the 9.5s on back and the clearancing done. even better from the back with all that meat. Now I need an engine to handle them


this is with the 8.5 on back below


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Low Original Miles at 35,875!!!
19x8.5(f) and 19x9.5(r) Drifz 520b's
235/35 & 245/35 Nitto NT555s
Otherwise stock for now

[This message has been edited by 1fastcaddy (edited 05-31-2006).]

anyone?

I have 215 / 45 R17 front on 7-1/2 rims with a 40 offset, 235 / 45 R17 in rear on 7-1/2 rims with a 40 offset, chrome wheels on my 87GT.
I had about a pencil width clearance on the rear shock tower when I put them on, drove with them for a month while saving up for my coil-overs, no problems but it was very tight.

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jetman
Silver 86 SE 2M6 4-speed, with "check wallet light"

cool. thanks for the post. i've added your's to the top. i'm hoping to get all of these on one thread, rather than searching a few hundred to find any.

Here's a very good link:

https://www.fiero.nl/forum/Forum1/HTML/052912.html

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"Anyone can make a copy of something, it may look good but it ever is the real car, make something from your imagination, something unique, something nobody has, anything is possible and, ideas can be a reality."

https://www.fiero.nl/forum/Forum1/HTML/058236.html
This may help too.

This kinda makes it easy--just go 1/2 way down the page, then enter your info, then it will calcuate it for you...

http://www.venommotorsports.com/library/tirewheelcalculator.asp

The hight of the rim has no relevance in what fit's the Fiero, or any other car for that mater!
The difference in rim-hight is compensated with the profile of the tyre.
The higher rim, the lower profile to compensate. (The lowest number is determined by the Fiero brakes, 14" rims just fit's original 84-87. The highest number is sett by how thin profile you can find. )

So that leaves us with two parameters to play with. Width, and offset.

I will only refer to the rear wheels to keep this simple. - How wide?
I run 18x8" os35, with 245x35-18" tyres, and there is plenty of room. 255 should be no problem. Lets stay with my size for a while!

Let's say the wheel get's a litle to close to the strut, and i would like the wheel to come out about 3mm, just to be safe.
All i need to do is to buy rims 18x8" os 32mm instead. This makes the tyre come out 3mm.
Or if i realize i have room on the inside, but getting dangerously close to the fender, i could buy 18x8" os38, to move the wheel inwards those 3mm needed to look good.

Basicly a offset of 35 - 38mm is good with original struts in the rear. 245 -255 tyres fills the space pretty good.
How ever, if you install coil-overs you gain more space for wider wheels on the inside, and you may want to go UP in offset so you can buy those 305 tyres
I'm not 100% on the original offset of the Fiero, but i do know that the further you get from stock, the more load you put on the wheel bearings.

An example where the changing of offset can be aplyed with good result.
I wanted my front wheels to be 225 wide, and with offset 35mm they touched the inner fender (The outer corner of the tyre rubbed the fender in the front when turning.) so i moved the tyres in 3mm by going offset 38mm and the wheel cleared the fender.

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87-GT 2.8L 5-spd.

quote Originally posted by Kristian V: The hight of the rim has no relevance in what fit's the Fiero, or any other car for that mater!

This is not completely true.
Having a larger diameter rim helps put on a wider rim.
It gives you a bigger "hole" in the rim that allows wider rims to clear knuckles, arms, and other suspension components.

giving this a bump as I didn't manage to figure out how large wheels I can fit on mine...

quote Originally posted by PerKr: giving this a bump as I didn't manage to figure out how large wheels I can fit on mine...

As far as I can tell---and rims tire fitment isnt one of my strong points---looks like Joe has it pretty well covered a few posts above--was their a peticular size you wanted to know.

http://www.westcoastfiero.com/faq/faq.html

That's for 17's.
For 16's, the widest rear you can fit under stock bodywork on early knuckles is 16x8-25. The widest front is irrelevant because you NEVER want the widest front wheel/tire you can fit on a Fiero.

im looking to get 17x8 with 48mm offset. i have grand am upgrade and coil overs in the rear. the car is also an 86. i know i am going to need spacers but should i get them just for the back? anybody have any suggestions. thanks!

i have 17x8's on the back of my 84 with 3800 and it has 245/45/17 and has no fitment issues, before or after the coilovers, they fit fine. 40MM offsetb or maybe its 42MM i cant remember

matthew

87 GT with coilovers. Rear-275/40/18. Front, 254/45/17. These are C5 'vette sizes.
These will be going on sbc GT in the spring.
I have about 1/16 inch clearance to the coilovers in the rear with 18x7.5 40 offset.
Yeah I know that size tire should not go on that rim but I don't care. It looks cool.

------------------
..from beautiful Caledonia, WI
87 GT 5 speed med red
87 GT 5 speed Electron Blue V8 SBC TPI

87 Notchie SportMax wheels 38 Offset 17x7 front 17x8 rear, Kumo ECSTA MX tires 225/45ZR17 front 255/40ZR17 Rear

[This message has been edited by fourpoint9 (edited 12-01-2006).]

quote Originally posted by Will: For 16's, the widest rear you can fit under stock bodywork on early knuckles is 16x8-25. The widest front is irrelevant because you NEVER want the widest front wheel/tire you can fit on a Fiero.

Will: Is that 16"x8.25" or 16"x8" with +25 mm offset? What about the late knuckles?

------------------
FierOmar

[This message has been edited by FierOmar (edited 12-04-2006).]

16x8 w/ 25 offset. The '88 knuckles have more kingpin angle and so *MIGHT* be able to take 16x8.5-30. I haven't been able to test fit my 16x8's on my Formula because the bolt pattern is wrong (5x115).

what tire size do you have on the 16's?

255/50

front and rear? just want to make sure i add the correct info . i didn't even think of seeing what on mine now and adding it. they're not stock i don't think so i'll add them.

16x8-25 w/ 255/50's is just for the rear.

quote Originally posted by Will: The widest front is irrelevant because you NEVER want the widest front wheel/tire you can fit on a Fiero.

For instance, with 8" rear wheels & 255 tires, you'd want 6.5" front wheels & 205's front. We all know those fit.

put on my new wheels this week. 7x17" with 215/50 tires. Have about 10mm clearance to the rear strut and slightly less than 1 fingers clearance forward of the front wheels (there's a bolt there which I managed to cut myself on). How much clearance do you need?

19 x 8 with a 45 offset and a 19 x 10 with a +30 offset. will it work with lowering springs in front, and coilovers in rear?

Has anyone had any success with different size wheels in front and rear, similar to the Corvette setup? For example, 17x7 in the front and 18x8 in the rear? Any pictures? Any stories? Anybody....

am looking for some help on this subject , I purchased some Intrax lowering springs recently for my 86gt ( mistake or not its done ) I am interested in 18's for rims with 17's a close second . What I am looking to find out is what offset do I need @ those sizes so I can throw some 245/255 on the rears and 225's on the fronts . The rims I am leaning towards offer 18x7.5 with a 48 offset also a 18x8.5 38 offset , in the 17" sizes they only offer the 17x7 with 40 offset .

If neither of those will work could someone give some sizes that might ? Intrax lowering springs drop the car 1.8 " if that helps aswell . If anyone is interested in these springs shoot me a pm

Thx for any help

[This message has been edited by Kemp3 (edited 10-22-2007).]