samdog1232000

If any of you have Boyd Coddington pics on a third gen please post! I also need the back spacing and bolt pattern for the car, because I plan to put some boyds in. I dont know if this will be making a difference but I plan to put a 9-bolt rear end in my car that came out of a 89 Trans am, it has Posi and the rear disc brake setup from the vette. This is all for my 92 RS!!!!!!!!! Oh yeah and vote on which Rim you think I should get!!!!!!!!!!

badandy247

either smoothie or timeless but if it was my ride definatly smoothie all the way

SLP IROC-Z

iTrader: (1)

13"

onebinky

iTrader: (1)

The largest I have seen on a thirdgen are 18's. I think any bigger on a thirdgen and it'll look like you be pimpin' dem hoez and shiz

Matt

samdog1232000

I know I can fit 18'z but I am not sure on the width..........

wyclefsirocz

i've seen pics of 20's and 18" in real life the 18z looks real goos and 17's are just right imho.

wyclefsirocz

i'm going boyd coddingtons and gonna get Magneto's it was Magnetos or Timeless 2's

do u have a daler for them because if not icould hook u up with somebodywho is a dealer for em and hes giving me a good price for my rims shipped.

89blackGTA

Hey Sam, any of those will make your car look nice. But I like the stingrays best. Is your car lowered? I cant remember. If it is stock height I think you can fit 11"/9" r/f in there, if it is lowered I think it is 9"/8.5".
When are you planning on getting them?
Brian

samdog1232000

My car is at stock height!!! So you are saying that I can fit a 11 inch width rim in the back if I wanted to and 9 in the front? Please post any pics of Boyds on third gens so I can get some ideas....

wyclefsirocz:
I am getting a pretty good deal on rims but if It does not work out I will let, are you getting them at dealer cost?

johnyIROC

I've got 17X10 Boyd Magneatos on a 9-bolt disc rear in my car. No pics yet.... but they are a very close fit. 10" with 5.75BS is definitely the widest you can go and still keep everything in the wheel wells without a mini tub.


Out of those choices I would narrow it down to:

Rodder 5
Ronco
Smoothie II

In that order...


I'm partial to magneatos... sorry no pics yet.

89blackGTA

samdog1232000

89blackGTA: Once I decide for sure which one I want I would guess in a month or two at the most.............

johnyIROCid you have trouble with the rear backspacing? How wide are your front? what do you mean 5.75BS?

89blackGTA

That would be sweet if you got them on before our next meet. I would LOVE to see them.

Brian

samdog1232000

Yeah hopefully I will get a good deal? My buddy got a set of Smoothie 17'8 rims for $800 so hopefully I will get a good deal like him, I know I will have to pay a little more but it will be worth it. I want to see some pics of 3rd gens with 17 Boyds and 18 inch boyds on them........... I also heard that the back rim has to be to spec because of the backspacing!

johnyIROC

The fronts are: 17X8" with 4.5" Backspacing
The backs are: 17X10" with 5.75" Backspacing

The 17X10 rears are the biggest you can go without having it stick out past the fenders. With 17X10 5.75" Backspacing they are tight on the inside as well.... almost rubs the bumpstops when jacking it up.

CrazyHawaiian

I'm not gonna vote since I think you should pick the style you like (not what we like hahah), but here's some info on my Boyds.

Wheels are Boyd Coddington Tuned, 18x8 front with 4.5" backspacing, 18x9.5 rear with 5.5" backspacing. Tires are Bridgestone Potenza S-03 Pole Positions 245/40/yr18 front and 275/35/yr18 rear's

Pic from the front:


Pic from the rear:


Closeup of wheel (and crappy brakes lol):


I highly recommend Boyd. Great wheel manufacturer. Some things to think about after ordering my wheel. If you want a completely flat lip, specify the reverse dish design. I didnt know about that option and ended up with a beleveled lip (which is fine with me). Also, when choosing your front width, remember that the front wheelwells are not as forgiving as the rear wheelwells when the car is lowered. What I mean is that wider widths in the front will rub if the car is slammed. Because of this I went with 8" wide wheels in the front (I like them to tuck when I lower the car full lock). Lates!

samdog1232000

I am guessing that if I use those specs for the rear that I will not need to use that backspacing plate right? I am getting different opions on the backspacing, is it preference? Does the backspacing change depending on width?

joekickass

hello CrazyHawaiian,

Can you tell me the offset of your rim(front and rear), I go a problem to make sure what is the maximum tire for my rim, my rims is 18s' , offset = 15, and please tell me how do you know the front and rear backspacing ??? how can I count??

thanks alot

Joe

Dwayne88IROC

Of all the choices I had to vote the smoothies.
Directional rims went out a long time ago. Classic looks on a modern rim is the deal now.

Don't go too big of a rim and rubberband tire. If you want to keep driving the car and not baby it. Get something that you can still use.

Just remember the canyon carving cruises with pot holes? Or the occasional dirt driveway or roads.

Front - 17 x 8.5 or 17 x 9.5

Rear - 18 x 10 Unless you plan on doing some mini tubbin

Don't go lower then a 1" drop if you go with the 18's.

Just my .02

FLYNLOW92rs

iTrader: (53)

I say go with the Rodder 5 rims......I would say go with 18's if you can afford it...

TOTTALLY OFF subject, but you should consider changing to a different grill......

samdog1232000

I have a Z28 Grill with new fog lights in them I just dont have a up to date picture..................

Dwayne88IROC: Dwayne, if I went with your size rims that you recommend what backspacing would ou recommend?

Dwayne88IROC

I would go with JohnyIROC's backspacing recommendations.
The fronts will be fine with 4.5.
Too much more then 5.75 on the rear will really hit the inner fender stuff. I would try to pound, move, whatever inside the rear fender to get as much clearance as possible. I did this for my 28 inch et streets on 15X10 centerlines. If you go with less BS'ing then it may stick out ghetto like.

ROH advertises 18's for 3rd gens I'll check what back spacing they recommend.

Dwayne88IROC

could'nt find the Back spacing but I like these in "black ice" with some big brakes behind them

Graboid

anyone said you shouldn't lower the car mor than one inch? Mine is lowered a good 2 1/2 inch and i t will not be the end.....

Wootah

bleh get a new grill and some fogs and that car would look incredible.. it does now anyways.

Dwayne88IROC

Graboid-What size are those rims and tires?

Most of our drive-fast-back country roads are not forgiving on large rims with small sidewall tires.

Graboid

i had the iroc grill and the foglights and it looks not as mean as this set up. sometimes less is more. The wheels are 8 and 10x18 with 225/45 (you cannot smash the car to the ground and run 9.5's in front) and 275/40 back.

Graboid

.

Dwayne88IROC

Yours has a real nice stance. Did you drop it 2.5 in the back?

Graboid

i have cut a full coil off 2inch intrax springs. Dunno how much the total drop is there

Dwayne88IROC

Wow.

Congrats on your 100th post.

samdog1232000

Graboid: What spacing did you use in the front and back?

Kandied91z

iTrader: (7)

18's if your a competent driver with a few years under the belt and 17's if your not. same thing if you can afford the 18's.

i would also recommend to stick with the 8/10 setup. 9-9.5 in the rear depending on what wheel you choose if you want to be certain that they will be inside the wheel when lowering.

if you are going to stay to a 1-1 1/2 drop then 9.5 with the right measurments in the front and again 10 rear. 10.5's will fit but it's pushing it and i wouldn't go lower then a pro-kit rear drop.

as far as the wheels i would go with a custom built 2 piece wheel as they are affordable and not only lighter then cast but look nicer. just like crazy said be sure to do your research, when i had my wheels built i had things done to my wheels that they never even offered before because no one had asked.

when i was looking to purchase my boyd wheels they also were willing to work with me. the main problem though you must understand is that if you tell them what offsets or backspacing you want you will be stuck with the wheels so don't trust anyone and do the legwork yourself.

samdog1232000

Can you measure the backspacing yourself?

Kandied91z

iTrader: (7)

of course you can....how do you think it's done?

there are plenty of sites out there to help you out with this sort of thing. just do some research on your own and you'll get it. if i were to take a chance on any of them crazy has the closest measurments but if you go with a 10" wide rim that will vary slightly. also it will depend on your options. for me having a reverse mount double rolled lip, etc. my measurement are a bit different. not much but different.

Dwayne88IROC

Hot Rod, CC, CHP all ran an article on making your own back spacing checking tool.

I'll look through my mags but I bet you could ask them online somewhere.

samdog1232000

How do you go about meausuring the BACKSPACING, were do you measure from?

Dwayne88IROC

You measure from the back of the rim where it touches the hub or drum. Then from the center line of the axle/hub measure out to the size of rim your planning on using. Then measure in and check rotation clearence. That will only get you the rim clearence. The tire size also needs to be considered and that is relative per tire.

Most good tire stores will have a tool for checking BS. But the article I mentioned before shows you how to make your own.

Dwayne88IROC

Check these out:
http://www.chevyhiperformance.com/techarticles/92318/

http://www.rodandcustommagazine.com/techarticles/90138/


From CHP mag:

3rd Generation ’82-’92 Camaro
These are reference charts only. All sizes should be verified before purchasing.

FRONT

15-Inch Wheels

Backspacing: 4.75

Wheel width: 7.0

Tire size: 245/50

16-Inch Wheels

Backspacing: 5.5

Wheel width: 9.5

Tire size: 255/50

17-Inch Wheels

Backspacing: 5.5

Wheel width: 9.5

Tire size: 275/40

REAR

15-Inch Wheels

Backspacing: 4.0

Wheel width: 8.0

Tire size: 265/50

16-Inch Wheels

Backspacing: 5.5

Wheel width: 9.5

Tire size: 255/50

17-Inch Wheels

Backspacing: 5.5

Wheel width: 9.5

Tire size: 275/40

wyclefsirocz

pleas eget pics because i want o see a 17"x10" magneto cause this what i'm going with- and a 17"x8" in the front

CrazyHawaiian

Here's the answer to a few questions and stuff:

I did not specify offset when ordering my wheels. When I spoke with the Boyd techs, they explained that backspacing was now the de-facto measurement when choosing wheel fitment. You can specify a custom offset and they will make it, but its not needed for the wheels to fit. I only specified backspacing and the fitment was right where I wanted it.

When finding your backspacing, remember that the wheel width is the most important thing. The wheel size 16/17/18, etc does not matter. The width will dictate the backspacing. Skulte's Wheel adapter FAQ is THE PLACE for wheel fitment info. He lists alot of different widths and their backspacing. An 8" wide wheel in the front requires a 4.5" backspacing. A 9.5" wide wheel in the rear requires a 5.5" backspacing. If you would like to find the backspacing for your desired width, you can search for other threads on this website and usually find the answer. Remember, since the size does not matter you can search for any size wheel with that width. So if you wanted to know the backspacing for a 18x11 wheel, you could search for 17x11 and probably find the answer.

Next lets talk about tire sidewall. If you plan to run a bigger size wheel, the tire sidewall will need to be smaller. I'm running 40 series in the front and 35 series in the rear. These sidewall heights maintain the overall dimensions of the OEM wheels (or as close as possible) with a 18" wheel. They also match the load ratings for tires of this width (245 front 275 rear) on a 3rd gen Camaro. One of the good aspects of todays high performance tires is the re-inforced sidewall. With a re-inforced sidewall you dont have to worry about the rim being damaged from a pothole. I've hit some mean potholes with my 18's (and re-inforced sidewall) and not even a scratch.

As for the ride height of the car, it all depends on what spring rate you run. I've found that you can run a very low ride height (aka slammed) if the spring is not sloppy. I would not recommend running progressive rate springs as they are sloppy unless force is applied. This means that while driving straight the car will rub when you hit bumps. I'm running linear rate springs and a very low ride height and I have not had one rubbing or fitment issue yet. Even at full lock.

Go with the 18's!!! Just make sure you do your research before spending the $$.

samdog1232000

I plan to get 18's for sure, I am running the stock suspension and it will be that way for a while, Do you know of any specific sites to figure out the specs?

lawbreaker2

Hey crazyhawaiian, it sound like you have airbags on your ride is that so.

samdog1232000

I was doing some break work on my car and was looking at the space available for the back wheels. I am surprised how little room there is in the rear. A 18x10 rim most barely fit in there! If I run a rim like that the tire must be a real low profile..............

Falconiroc

Graboid,

I think your car looks great at that level, lowering it more will just look tacky IMO.

but hey, whatever floats your boat.

samdog1232000

I agree, that is why I dont really want to lower it, It scrapes curbs when I go up drive ways as it is let alone if it dropped.......... Once I do get rims I can always get a bigger tire to fill the space up if it is possible?

Kandied91z

iTrader: (7)

just get the right sizes for what your height is. a 18" tire with a tall sidewall will look rediculous..

joekickass

I just put on the 18's on my firebird and found something, my rim is 18*8.5 front and rear, I run 235/40/18 in the front, 255/45/18 in the rear, for the rear, I feel I don't need to drop to make my car look aggressive, the sidewall do the job(I really like the way it is), but in the front, 235/40/18 look thin and I thought the 245/40/18 is the biggest tire in the front or it rub and also the 8.5 is too wide for the tire, I think the rim is wider than the tire.....

If I don't wanna drop the car, the front looks need bigger tire but it is impossible to put more than 245/40/18, so you may get the "right size" and drop it to looks more aggressive.

Personlly I will still try bigger(thick) tire instead dropping the car.

just my opinion

Kandied91z

iTrader: (7)

i have 245/40/18 for my 8" and it's only a point shy from stock height. your tire sizes are a bit off for the rims but if your happy that's good.

why is it impossible to do a 245/40? you should be at a 255 with the 8.5" rim. with such an odd size unfortunately i would say stick with a 40 series 255/18 and you should be very close.

235/40/18 sounds close but your stretching it with a 8.5 wheel. those tires are more suited for a 7.5" wheel.

now your rears are way off....

here is a comparison to stock tires:

245/50-16 4.8in 12.8in 25.6in 80.6in 786 0.0%
255/45-18 4.5in 13.5in 27.0in 84.9in 746 5.4%


just need to pick better tires for your wheels.

samdog1232000

Hey Kandied91z,
Do you have any pics of your car from the rear to show off the width of your rims and tires, or anybody else? I am curious to see a 18x10 rim setup looks like?