84 z28--
Have any rear & side pics?
Any mods to the wheel wells??

Great looking stance!! Great looking Camaro!!

I was told I can't go bigger than 8" wide wheels or the tires would rub the inside wells unless it was cut out.

 

It looks ok, but I'd rather have a cowl scoop.

 

centerline comp quailfier up front and stock 91 wheels in the back till i burn these et's off them i'm gettin either 8 or 10's for the back

 

I dont have any good pics of the rear but i have a couple of the side view. You can go with a 8" rim and 4.5 backspacing and you will be fine with a 275 tire. I have seen it done on this board a number of times. When you move to a 15x10 you have to cut up the wheel well. This is what i had to cut out to make the rims and tires fit.

https://www.thirdgen.org/forums/whee...get-15x10.html

 

84z28 - I like that the rear wheels don't stick out on your car and that they tuck in nicely. I'd like to get about the same effect, but I'd like to run a smaller rim since I'm only interested in getting 15/275/60"s on the rear of mine without hitting anything or modding.

I've been looking at the Centerline Polished Fuel wheels, and they have a 15"x8.5" wide wheel with a 5" back set and a +13mm OFFSET available.

So how will this positive "offset" effect the fit of the wheel/tire?? Also on some wheels, they don't even list a back set, just "off set" - what's a good off set wheel for the rear of a Thirdgen that'll tuck in as far as possible without modding (in a 15" wheel)??

 

84 z28 & Stephen--

Thank You for the info!! This is definitely something I saved in my "favorites" on the computer. Now I know what we may be in for when we decide on wheels & tires!!
WILL do it for sure if there's rust.

 

I know on a 15x8 you usally want a 4.5 backspacing with the extra 1/2 of rim and backspacing I dont know if it would rub or not. I forgot what the offset will affect in your case but it is where the hub mounting surface sits in the rim but I believe most 15x8 rims with 4.5 backspacing have a 0 offset. My 15x10 have a 6.5 backspacing and are a +25.00 mm offset.

 

a 15x8.5 with 5" back spacing centerline wheel will fit no mods required. i had a set of warriors on the car for a weekend once with those exact dimensions.

 

Did the set of warriors also have a +13mm offset too?? -Or were they "0" offset? You see, that's my dilemma...13mm is close to 1/2", so I might end up with essentially a 5.5" backspaced wheel, or am I over thinking this? Why does a wheel need to have both an offset and a back set anyway?? It doesn't make sense to me.

 

you're over thinking this. it's "5inch backsping OR13mm offset" and if 0 offset is 4.5", then 13mm offset would be 5". put a straight edge across the back side, and measure to the wheel flange, see what it is.

 

Offset is where the the center line of the rim meets the hub mating surface.

Backspacing is where the hub mating surface is measured to the outside of the back of the rim.

The two are completely different and both matter.

 

Ahhh...Ok, so they're talking about the same thing then? It's really just saying I'll end up with a 5" back set as I'm trying to understand it. Seems to me that if you increase the back set on any wheel, the hub flange needs to move outward (which increases "offset") to make up for it regardless....is that the right way to think about it?

 

nice cars!

 

they are different, but they measure the same type of thing, just using a different concept. offset on a 15x8 wheel with 4.5" backspacing is zero, but offset using a 15x10 wheel with the same backspacing is ~25mm. a 15x10 with 5.5" backspacing would be zero. backspacing is a much easier measurement to use, and is what's mostly spoken of in drag racing since regardless of the width of the wheel, backspacing won't change. it's ALWAYS the distance from the hub flange to the inside wheel lip. whereas offset changes based on wheel width.

 

to bump this thread up here is my car with pro convo's















I need your honest opinions

 

oh btw the rear tires are 295/50/15 and 225/60/15 up front will change the front to 205/60 soon

 

Back rims have the wrong backspacing. Other then that looks good.

 

well the problem was if I want to use 10" rear it must have 5.5" B.S but centerline doesnt have pro convo's in 5.5" they have them in 5"

 

You dont have to have 5.5 bs. You could of went 6-6.5 bs spacing if it was available.

 

well it doesnt matter that much now I might go with TTII or just order rear centerlines with the correct back space

 

convo pro's are a badass wheel, but i agree, wrong backspacing and it looks a bit r*dneck to me

 

ok I decided to ditch the TTII idea out of my head and will order 2 wheels 15x10 with correct back spacing but whats the correct back spacing for them?

 

5.5 , 6.0 , 6.5

I would personaly only go for 6-6.5 bs.

 

now it has 5" B.S and you can see in the pictures it sits out like an inch or little bit more

 

Whats your point. Your tires bulge more then the rim sticking out. You wanted a 295 then thats what hapens. Most people that have 15x10 rims go with 5.5 backspacing. That eliminates most of the work to the inner fender. In my eyes 6.5 is ideal but you have to cut and re shape the inner fender. Get a 15x8 and put a 275 on it and you will get the same look with less issues.

 

I toke these pictures I hope they will explain what I mean

I

 

what if I toke the 15x10 with 6.5" B.S and instead of cutting I put half inch or an inch spacer will that work?

 

6.5 bs with a .500 spacer and you would have 6" bs so yes it would. Dont get or use a 1" spacer.

 

Any running a 15x10 with a 6 inch backspace? Post pics if you do!

Or a 15.9.25 with a 5.5 BS?

I am about to order wheels and need to decide between the 2

 

heres mine, 15x4 with 165 80 15 front and 15x8 with 4.5bs rear with 275 60 15s. need to lower it a bit in the rear.

 

Just to clarify for those who may still be confused about the difference in wheel backspacing and offset:
http://www.tirerack.com/FAQ/results....gory=Wheels#66
if you click the word "offset" it will show a drawing of a wheel which will give a better visual of how these are measured.

 

Nice wheels...What brand are they?

 

Matt (mw66nova), 85sc5 and 91RsNate

You guys have the set up I want, while retaining streetable status.

1) Rears, was there any modifying for the rear wheel wells?
2) With 165's up front how is it during normal driving, parking & turning?

 

 

What diff, tire and wheels specs r u running on that rearend ?

 

Opps, I guess I forgot that info!

Strange 12bolt stock 3rd gen width
LT1 rear disc brakes
Weld RTS 15 x 10.275; 6.5" back spacing
MT 28 x 10.5 slick

 

need to cut out the bump stops and do inner fender massaging where the lca mount is.

 

Looks awesome.. I have a fourth gen rear end on mine but idnt no what back spacing to go with so the wheels have tuck into the fender. I got some et drags 28x10.5 for free and i wanna mount them up but idnt know what wheel spec to get to get the perfect fitment

 

if you have a fourthgen width rear, look at a 15x10 with 7.5" backspacing

 

Thanks

We went at it a slightly different way but got the same results as mw66nova












Rear plastics still fit too

 

Hello everyone, For those running a 15" x 8" wheel with 5.5" bs, Did you have to do any modifications to the inner fender? I have a set of prostars and they seem to be very close to the inner fender. I bought 3/4" spacers and that gives me lots of clearance, but I'd rather not run spacers if I can get away with it. I haven't tried the fitment with tires mounted. What would be the best tire to run on these wheels... I'm thinking 275/60/15, or 275/65/15.
I currently have mickey thompson sportsman d/r 28/12/15 on stock z28 rims... and no clearance issues.

 

How about a 29x12.5 15 sportsmen all tucked under nice and neet
on a 10.275 x 15 wheel fits like factry..(Now)

I did have to use off set bushings for the LCA
DROPPED the car down about 2" inch ..looks sweet.

 

looks good. do you intend to keep that old skool bias ply on there or go with some modern radials?

 

this is the thrash set of tires could not pass them up brand new for $200
this is the tallst set i could fit with My GFX good for mock up and beat up!

the drag Radials are 1 inch shorter at 28"tall and 1 inch wider with the same cross sec... 13"

and the sportsmen pro, wrinkle wall tires, bite better. to start with
almost has good as the ET streets. also a non Radial tire.

But.

doing the same thing has i did with the drag lites, buyn 2 more rims for the Radials

will be posting a add for the 6 weld drag lites all 15"

2x 3 1/2" (coopers tires new)
2x 8" (et streets tires new)
2x 10 (mickytomson tires 3/4 gone)

Tires are like shoes..ya can never have too Many..
so unless mom is still buys your shoes...why only have one pair. it's only money

just shop is all

 

just scored another set of new Mickytomson Radial front runner tires

with the flame patrn in the tred..$150 for the set.. 50%off
has long has i paid $420 for the 325/50/15 drag radials

so

also got the newr Micky Drag Radial rear tires.. it's all about dealing

update: sold the better then new weld drag lites for $600. had them for over 20 years..lol
there on a G body now... kid loves them..

 

m/t drag radial 15x10 rear 275-60-15. 15x7 front 225/60-15

 

Weld Racing Vitesse RT... M/T drag radial 275/60/15 on 15x8 5.5 B/S...205/75/15 on 15x5.

 

Are you sure on this info? Im about to make an order for 15x10 with 6.5 and .500 spacers

 

new shoes

 

Sizes please ^^