Pennock's Fiero Forum
  General Fiero Chat
   Choice of wheel, designing the car backwards

Post New Topic  Post A Reply
Email This Page to Someone! | Printable Version


next newest topic | next oldest topic
Choice of wheel, designing the car backwards by bigblockfieropacecar
Started on: 03-09-2016 11:46 PM
Replies: 25 (552 views)
Last post by: 2.5 on 03-24-2016 04:05 PM
bigblockfieropacecar
Member
Posts: 90
From: mpls mn usa
Registered: Apr 2014


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-09-2016 11:46 PM Click Here to See the Profile for bigblockfieropacecarClick Here to Email bigblockfieropacecarSend a Private Message to bigblockfieropacecarEdit/Delete MessageReply w/QuoteDirect Link to This Post
The 88 Trans Am 15" wheels are really cool and appear to be a big brother of the 14 inch indy pacecar wheels.
Never mind the fact that they don't fit - - - for now.
The rubber that is typically on these wheels is typically 26.1 inches tall by 9.2 inches wide. That size would be perfect to fill up the wheel opening of the back of a 84 Indy pacecar.
Painting these wheels to match the 14 inch front wheels would be really cool and would make room for larger brakes.

This images is larger than 153600 bytes. Click to view.
IP: Logged
PFF
System Bot
bigblockfieropacecar
Member
Posts: 90
From: mpls mn usa
Registered: Apr 2014


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-10-2016 12:37 AM Click Here to See the Profile for bigblockfieropacecarClick Here to Email bigblockfieropacecarSend a Private Message to bigblockfieropacecarEdit/Delete MessageReply w/QuoteDirect Link to This Post
This images is larger than 153600 bytes. Click to view.
IP: Logged
viperine
Member
Posts: 1401
From: Pittsburgh, PA, USA
Registered: Feb 2015


Feedback score:    (6)
Leave feedback

Rate this member

Report this Post03-10-2016 01:34 AM Click Here to See the Profile for viperineClick Here to Email viperineSend a Private Message to viperineEdit/Delete MessageReply w/QuoteDirect Link to This Post
If you like those, check out the '84 anniversary trans am wheels. White with a blue stripe, if I recall correctly. I have a set of '85's painted charcoal in the recesses with machined faces. They're referred to as salad shooters or 20 slot wheels. I use them for winter and swap over to snowflake wheels in better weather. If you want to get fancy, hawk's third gen parts now offers the GT diamond spoke wheel in 17x9, but again, made for trans ams. Wrong bolt pattern, and wrong center cap application. Oh well, one can dream, right?
IP: Logged
IMSA/GT
Member
Posts: 166
From: pa
Registered: Jun 2003


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-10-2016 07:38 AM Click Here to See the Profile for IMSA/GTClick Here to Email IMSA/GTSend a Private Message to IMSA/GTEdit/Delete MessageReply w/QuoteDirect Link to This Post
Contact Louis @ Centerline in California. http://centerlinewheels.com He can make your wheels with proper bolt pattern and any offset you need. He made mine which are both DOT and SF 15.1 approved. American made too. Some of their many styles with and without exposed centers:

http://centerlinewheels.com...20153618_saberii.jpg

http://centerlinewheels.com...0153624_scorpion.jpg
IP: Logged
bigblockfieropacecar
Member
Posts: 90
From: mpls mn usa
Registered: Apr 2014


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-10-2016 09:05 AM Click Here to See the Profile for bigblockfieropacecarClick Here to Email bigblockfieropacecarSend a Private Message to bigblockfieropacecarEdit/Delete MessageReply w/QuoteDirect Link to This Post


I'm trying to keep my Indy pace car theme. If not for the availability of these 15" wheels
I would simply stay with 14 inch pace car wheels.
IP: Logged
bigblockfieropacecar
Member
Posts: 90
From: mpls mn usa
Registered: Apr 2014


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-10-2016 09:13 AM Click Here to See the Profile for bigblockfieropacecarClick Here to Email bigblockfieropacecarSend a Private Message to bigblockfieropacecarEdit/Delete MessageReply w/QuoteDirect Link to This Post
If I understand this correctly, the bolt pattern is different and also the backspacing.
The first thing I need to do is fix the bolt spacing so I need to know if there is a wheel bearing Assembly selection that would upgrade my existing 88 bearings - - - some machining required I'm sure.
And then? Corvette rotors and calipers that fit inside the 15 inch wheels?
I don't know the possible interchanges that some of you have done on this forum,

I will be making shorter lateral bars so the wheel fits inside the fender well.
IP: Logged
bigblockfieropacecar
Member
Posts: 90
From: mpls mn usa
Registered: Apr 2014


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-10-2016 09:32 AM Click Here to See the Profile for bigblockfieropacecarClick Here to Email bigblockfieropacecarSend a Private Message to bigblockfieropacecarEdit/Delete MessageReply w/QuoteDirect Link to This Post
Yes, that 1984 anniversary Trans Am is what I'm trying to do and to somehow make my car look authentic as if it came this way from the factory. Well - - - and hide the engine.
IP: Logged
bigblockfieropacecar
Member
Posts: 90
From: mpls mn usa
Registered: Apr 2014


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-10-2016 09:37 AM Click Here to See the Profile for bigblockfieropacecarClick Here to Email bigblockfieropacecarSend a Private Message to bigblockfieropacecarEdit/Delete MessageReply w/QuoteDirect Link to This Post

bigblockfieropacecar

90 posts
Member since Apr 2014
Nobody has ever put that big a tire under the back of a fiero without putting the engine in the front.
This will be a first if I do it.
I do this sort of thing so yes I will do it.
IP: Logged
bigblockfieropacecar
Member
Posts: 90
From: mpls mn usa
Registered: Apr 2014


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-10-2016 11:51 AM Click Here to See the Profile for bigblockfieropacecarClick Here to Email bigblockfieropacecarSend a Private Message to bigblockfieropacecarEdit/Delete MessageReply w/QuoteDirect Link to This Post
Ok, I see now that rim is offered in a 16 inch diameter!
How did I miss that?
OK, yes, even more room for brakes.
The point of this post is that I really don't know what is available or the best way to go about this.
I'm looking for ideas but I am married to two things - - -

the Trans Am wheels, and the 88 fiero spindles.
IP: Logged
imacflier
Member
Posts: 933
From: Levittown, NY, USA
Registered: Apr 2002


Feedback score: (1)
Leave feedback

Rate this member

Report this Post03-10-2016 12:32 PM Click Here to See the Profile for imacflierClick Here to Email imacflierSend a Private Message to imacflierEdit/Delete MessageReply w/QuoteDirect Link to This Post
Changing the '88 to use the 4.75 bolt pattern is NOT trivial. FieroGuru has shown how here: //www.fiero.nl/forum/Forum2/HTML/120747.html

And there is another method which I can't seem to find at the moment.

Good luck and mebbe you will find a simpler less costly approach!
IP: Logged
viperine
Member
Posts: 1401
From: Pittsburgh, PA, USA
Registered: Feb 2015


Feedback score:    (6)
Leave feedback

Rate this member

Report this Post03-10-2016 01:34 PM Click Here to See the Profile for viperineClick Here to Email viperineSend a Private Message to viperineEdit/Delete MessageReply w/QuoteDirect Link to This Post
There are at least 4 designs on the F-body 20 slot wheels. White, concave, convex, and 16". The 16 is only available concave...wheel adapters just might be the easiest route. The offset is going to matter as well, but I have no clue as to what extent... In my opinion, the 16" version is the ugliest (to each their own) as it added dimples and a different finish. As for concave/convex, the Fiero versions appear convex.
IP: Logged
PFF
System Bot
IMSA GT
Member
Posts: 9339
From: Smogfornia
Registered: Aug 2007


Feedback score:    (8)
Leave feedback





Total ratings: 248
Rate this member

Report this Post03-10-2016 02:29 PM Click Here to See the Profile for IMSA GTClick Here to Email IMSA GTSend a Private Message to IMSA GTEdit/Delete MessageReply w/QuoteDirect Link to This Post
I have no idea if this will help you but there is a company that custom makes that wheel. If I remember, they take a 14" donor, cut out the face so you retain the bolt pattern, and make a 3 piece wheel in a larger size and whatever width you need. The wheels do look a little different with the rivets along the edges but they still look nice:


By the way, you have to have a translator to understand the Facebook pgae:
https://www.facebook.com/pa...Zbif/435223189880338

[This message has been edited by IMSA GT (edited 03-10-2016).]

IP: Logged
Thunderstruck GT
Member
Posts: 2663
From:
Registered: Oct 2015


Feedback score: (4)
Leave feedback





Total ratings: 98
Rate this member

Report this Post03-10-2016 03:44 PM Click Here to See the Profile for Thunderstruck GTSend a Private Message to Thunderstruck GTEdit/Delete MessageReply w/QuoteDirect Link to This Post
I don't consider starting with the wheels, "designing the car backwards". Fact is, that is how it should be done.
IP: Logged
bigblockfieropacecar
Member
Posts: 90
From: mpls mn usa
Registered: Apr 2014


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-10-2016 04:40 PM Click Here to See the Profile for bigblockfieropacecarClick Here to Email bigblockfieropacecarSend a Private Message to bigblockfieropacecarEdit/Delete MessageReply w/QuoteDirect Link to This Post
I like the concave wheel almost better than the convex wheel but as far as backspacing my main consideration is that I want the inside of the tire to come very close but clear the stock 88 trailing arms.
The rest I will fix by altering the length of the lateral arms.
IP: Logged
bigblockfieropacecar
Member
Posts: 90
From: mpls mn usa
Registered: Apr 2014


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-10-2016 05:03 PM Click Here to See the Profile for bigblockfieropacecarClick Here to Email bigblockfieropacecarSend a Private Message to bigblockfieropacecarEdit/Delete MessageReply w/QuoteDirect Link to This Post
These wheels are going on the back,
Not the front.
Going onto Rear 88 uprights
IP: Logged
qwikgta
Member
Posts: 4592
From: Virginia Beach, VA
Registered: Jan 2001


Feedback score:    (21)
Leave feedback





Total ratings: 83
Rate this member

Report this Post03-10-2016 08:32 PM Click Here to See the Profile for qwikgtaClick Here to Email qwikgtaSend a Private Message to qwikgtaEdit/Delete MessageReply w/QuoteDirect Link to This Post
just be advised, the formula rims come in two diff offsets, diff front to rear.
IP: Logged
bigblockfieropacecar
Member
Posts: 90
From: mpls mn usa
Registered: Apr 2014


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-11-2016 10:06 AM Click Here to See the Profile for bigblockfieropacecarClick Here to Email bigblockfieropacecarSend a Private Message to bigblockfieropacecarEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Thunderstruck GT:

I don't consider starting with the wheels, "designing the car backwards". Fact is, that is how it should be done.


Yes, your absolutely right but this pace car theme makes it more difficult.

IP: Logged
bigblockfieropacecar
Member
Posts: 90
From: mpls mn usa
Registered: Apr 2014


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-11-2016 10:07 AM Click Here to See the Profile for bigblockfieropacecarClick Here to Email bigblockfieropacecarSend a Private Message to bigblockfieropacecarEdit/Delete MessageReply w/QuoteDirect Link to This Post

bigblockfieropacecar

90 posts
Member since Apr 2014
 
quote
Originally posted by qwikgta:

just be advised, the formula rims come in two diff offsets, diff front to rear.


I didn't know, that info gives me more options and will make this easier.

IP: Logged
bigblockfieropacecar
Member
Posts: 90
From: mpls mn usa
Registered: Apr 2014


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-11-2016 10:10 AM Click Here to See the Profile for bigblockfieropacecarClick Here to Email bigblockfieropacecarSend a Private Message to bigblockfieropacecarEdit/Delete MessageReply w/QuoteDirect Link to This Post

bigblockfieropacecar

90 posts
Member since Apr 2014
 
quote
Originally posted by IMSA GT:

I have no idea if this will help you but there is a company that custom makes that wheel. If I remember, they take a 14" donor, cut out the face so you retain the bolt pattern, and make a 3 piece wheel in a larger size and whatever width you need. The wheels do look a little different with the rivets along the edges but they still look nice:


By the way, you have to have a translator to understand the Facebook pgae:
https://www.facebook.com/pa...Zbif/435223189880338



Those are so cool looking, but it looks like big money. May even cost more than what I have into my entire Power plant.

IP: Logged
bigblockfieropacecar
Member
Posts: 90
From: mpls mn usa
Registered: Apr 2014


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-11-2016 10:19 AM Click Here to See the Profile for bigblockfieropacecarClick Here to Email bigblockfieropacecarSend a Private Message to bigblockfieropacecarEdit/Delete MessageReply w/QuoteDirect Link to This Post
My other outrageous plan is to possibly leave the stock 88 rotors and aluminum calipers for less unsprung weight and add an extra pair of rotors and calipers inboard and installed between where my axle shaft bolts to my outlet flange coming from my transmission differential. All four Calipers grouped together and designated as Rear proportioning.
Wouldn't that be cool? I think so and in some ways easier than the upgrade conversion I may otherwise have to do. These rotors would be nonvented and simply just a flat piece of laser cut steel although drilled and slotted.

[This message has been edited by bigblockfieropacecar (edited 03-11-2016).]

IP: Logged
bigblockfieropacecar
Member
Posts: 90
From: mpls mn usa
Registered: Apr 2014


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-11-2016 10:33 AM Click Here to See the Profile for bigblockfieropacecarClick Here to Email bigblockfieropacecarSend a Private Message to bigblockfieropacecarEdit/Delete MessageReply w/QuoteDirect Link to This Post
My other outrageous plan is to install some giant brake shoes from a semi that turn the inside surface of the wheels into a huge brake drum,
Lol, ok, just kidding.
IP: Logged
PFF
System Bot
Raydar
Member
Posts: 39100
From: Carrollton GA. Out in the... country.
Registered: Oct 1999


Feedback score:    (12)
Leave feedback





Total ratings: 457
Rate this member

Report this Post03-12-2016 09:33 PM Click Here to See the Profile for RaydarClick Here to Email RaydarSend a Private Message to RaydarEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by qwikgta:

just be advised, the formula rims come in two diff offsets, diff front to rear.


Yes. Except that GM did it bass-ackwards. The deeper dish wheels are the ones designed for the front.
The rears had a shallower dish (smaller lip.) This was supposedly done for front knuckle clearance.
I always wondered why they didn't just put the deeper dish on all four, and call it a day.
16" IROC wheels are the same way. Not that it matters here.

[This message has been edited by Raydar (edited 03-12-2016).]

IP: Logged
qwikgta
Member
Posts: 4592
From: Virginia Beach, VA
Registered: Jan 2001


Feedback score:    (21)
Leave feedback





Total ratings: 83
Rate this member

Report this Post03-24-2016 11:32 AM Click Here to See the Profile for qwikgtaClick Here to Email qwikgtaSend a Private Message to qwikgtaEdit/Delete MessageReply w/QuoteDirect Link to This Post
I know, I always found that funny that the deep ones were on the front. You don't know how many times I had to tell a tire/wheel shop to swap them back after getting new tires put on. Even had a set on my 79 Grand AM. but I had to put the front on back, and the back on front for that car. In the end I had to buy another set of front so I could run all 4 w/ the deep offset.

Rob
IP: Logged
Jungle
Junior Member
Posts: 10
From: Flagstaff Arizona U.S.A.
Registered: Mar 2016


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-24-2016 02:01 PM Click Here to See the Profile for JungleClick Here to Email JungleSend a Private Message to JungleEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by bigblockfieropacecar:


Yes, your absolutely right but this pace car theme makes it more difficult.


But not impossible. Are you thinking about how any changes of this nature will effect the ride/drive? When it comes to steering and turning, I like my car to feel true.

IP: Logged
lou_dias
Member
Posts: 5138
From: Warwick, RI
Registered: Jun 2000


Feedback score: (3)
Leave feedback





Total ratings: 66
Rate this member

Report this Post03-24-2016 02:28 PM Click Here to See the Profile for lou_diasClick Here to Email lou_diasSend a Private Message to lou_diasEdit/Delete MessageReply w/QuoteDirect Link to This Post
to support my racing, I'm looking for light-weight 16x10 wheels with 5.75" of back-spacing in either Fiero or F-body bolt pattern.

I am using bearings from Arraut Motorsports that come with the 5x4.75" bolt pattern currently.
IP: Logged
2.5
Member
Posts: 42359
From: Southern MN
Registered: May 2007


Feedback score: (1)
Leave feedback





Total ratings: 180
Rate this member

Report this Post03-24-2016 04:05 PM Click Here to See the Profile for 2.5Send a Private Message to 2.5Edit/Delete MessageReply w/QuoteDirect Link to This Post
I always thought those dished T/A wheels would look great on Fiero.
IP: Logged

next newest topic | next oldest topic

All times are ET (US)

Post New Topic  Post A Reply
Hop to:

Contact Us | Back To Main Page

Advertizing on PFF | Fiero Parts Vendors
PFF Merchandise | Fiero Gallery | Ogre's Cave
Real-Time Chat | Fiero Related Auctions on eBay



Copyright (c) 1999, C. Pennock