84 z28

Looking at buying some 15x10 rims from Jegs or Summit. I have done a search and for the life of me cant decide on a backspacing. 5.5 or 6.5
I want them under the fender lip and i will be running a 275/60/15 tire. Which backspacing will work the best and is there any mods that I will have to do with the wheel well or other stuff ? The car will also be lowered so the fender gap will be around an inch space from tire to fender lip.

//<86TA>\\

iTrader: (15)

5.5 is the most common offset, but the wheels are not quite flush. 6.5 is best, but requires a bit of work to the inner fenderwells.

84 z28

Does the 6.5 back spacing put the rim in the wheel well more or less ? I dont want the rims flush with the fender lip because the car will be lowered and I dont want any rubbing.

84 z28

One more question also. I wanted to run a 275/60/15 radial tire. The recomended max rim for these tires are 9.5. I swear i have seen poeple on here running a 15x10 with a 275 tire. Would it look right or not ? really dont want to step up to a 295 tire.

kens86

you would be fine with a 275 on a 10" wheel. But you would have to to some cutting to the inner wheel wells. I have 15x9 with a 275's and no problems.

Stephen

iTrader: (12)

Go with 5.5" bs. 6" would work easily.

I had 5", with room to spare. Went to 7"bs & it required more than "just a little" cutting. 6.5" would be a LITTLE easier to fit the wheel in, but the majority of my cutting (and welding) issues were because of the tire, not the wheel.

It was worth it, but be prepared!

84 z28

I not worried about the cutting. And if i could find a rim that i like in a 9" i would buy it nothing looks good to me in a 15x9.

84 z28

I have been googleing this topic today and have been reading that 5.5 sits flush with the outer fender lip or a little more. That is almost like some joe dirt stuff to me. I was planning on probably rolling the lip and some inner fender mod so the rim and tire sits right inside the wheel well. I'm searching for pics now but i have been seeing there's a nice debate about the 5.5 vs 6.5 here on TGO.

Stephen

iTrader: (12)

The wheel width has to be considered, not just the bs. My 11" wheels are in a bit, not quite flush.

84 z28

I dont want the tire flush with the fender lip I want it inside. I want to use a 275/60/15 tire a a 15x10 rim just need to know what backspacing would accomplish it.

84 z28

The closer i can get to this the happier i would be. Large rim and tire inside the fender lip

t-top havoc

iTrader: (3)

Sweet Camaro!! Narrowed rear end and//or mini tubs??
Does that fit your description--15x10--275/60/15?
Forgive me but I don't know tire//wheel talk.

S_Johnson

ok, so my two cents. I just had 295/15-15's mounted on my rears, which are 15x10 with 5.5" of backspacing. I would call them flush-ish, but my tires are wider than yours, and fatter (They are 10" tread, but 12.3" section width, because the're the old Mickey Thompson "indy profile's"). I can get pics tomorrow and post them, that will give you a good idea. BTW, just asking, but why don't you want to go to 295? wider will get you more traction, plus it looks WICKED from the back of the car. Just asking!

84 z28

I will be waiting for those pics thanks. I have seen pics of a 15x10 and a 295 tire and there all like a 60 series tire it seems. I dont want a huge amout of side wall.

84 z28

In my eyes this is too much tire but it does fit inside the fender lip. But my car is also a street so I dont need that much tire.

just an example: 295/65/15

Confuzed1

iTrader: (4)

With all this talk about a 5.5" backset 10" wide rim fitting, is that assuming a
"0" offset wheel??

I'm looking for the same type of fit that 84 z28 is...widest tire/rim combo in the rear that fits inside the rear fenderwell - not even with it or slightly outside of it - (as he said, Joe Dirt style). Some of the wheels I'm looking at have both an offset and a backset number....and I know a positive offset puts the wheel hub closer to the street side of the rim...(as opposed to a "0" offset in which the hub is centered in the rim)

Confuzed1

iTrader: (4)

I look at that as fitting inside the fender lip, but not inside the fender - looks like it would rub if used daily on the street.

84 z28

I dont know looks close. For more pics check the link

https://www.thirdgen.org/forums/orga...bs-anyone.html

S_Johnson

Your totally right, a tire with that much sidewall makes it look like a drag racer. Her's a link to two tires that are the STOCK amount of sidewall, just wider.

http://www.tirerack.com/tires/TireSe...er=15&x=83&y=9

I'm at work right now but I'll get those pics in a few minutes when I take a break.

84 z28

You have 50 series tire. I cant go that low. I need a 60 series or a 28 in tire with 4.10 gears.

S_Johnson

wait, I don't understand, you said you didn't want that much sidewall, but you need a 28" tire? that means you need bigger than 15" rims... I'm confused... STOCK sidewall and tire hight is 26" total diameter, and 235/60-15. Which gives you 26". I have 295/50-15, which has the EXACT same amount of sidewall, and is exactly the same totall height as stock.

84 z28

i want to run 15x10 rim with a 275/60/15 tire(28"). the red car pictured has a 30" tire on it, dont need that. With a 28" tire and lowering my car to close to 0 fender gap will bring my car to a stock ride height which is what i want. What I have been asking is what backspacing will get me inside the fender lip with a 15x10 rim and a 275/60/15 tire. I want my car to be setup as close to the black car pictured as possible. I am leaning towards 6.5 backspacing and some metal work.

S_Johnson

I get it now. Ok, as soon as I can I'll post those pics, that will tell you exactly how far 5.5" will stick out. All you need to do is get the section width of those tires, and compare it to mine, that will tell you how far out 275's will stick out relative to my 295's (probably around 1/4" or so less).

Hewmanoid

I was looking at 15x10 rims, but they have a backspacing of only 4".
Will that stick out from the fender lip? I have a bad feeling it will.

84 z28

Hewmanoid

I lol'd. I should have checked before asking. My fault there. They'd look bad. Haha.

kens86

That's my buddies car. No they do not rub. and yes it is a 8.40et street car.

cjyoung@netins.

yes 4's will hang way out itll look terrible you need 6 to 6.5 to keep it inside the fender

articwhiteZ

iTrader: (56)

what was the out come.

doing a new set of wheels now

15x10 w/5.5 bs came close to outside lip but bolted on (with out tires)
Over all.lip to lip this wheel was 11.5 wide
and a set of 15x9.275 w/6.5 bs have to test in the AM. this wheel is only 10" wide (lip to lip)
but so close to a 9" we will just call it a 9

i put up the lip to lip size. has it gets close to inside parts. (outside lip of rim)

GOING TO ORDER ANOTHER WHEEL

thinking about a 15x10 with a 6.5 Low pad
from what everybody thats doing this there is some cutting and pounding.
so when i start all this ill also post a full set of pics (like others have done)
but will get a few diff tires in the mod to show.

all wheels are the new RT-S from Weld wheels
it's only money...

tires i have on Hand are
Micky 29x12.5 x15 sportsmen
and micky ET Streets 29x12.5x15

articwhiteZ

iTrader: (56)

Ok.got the 15x10 6.5 back space.low pad wheel. a few weeks ago.
working on this 6.5 back space now. and looking at the last 2 pics the side wall is even with the outer lip. my old set up was the same way.

with the 28x12.5 ET Streets and with only a 4.5 back space and no wheel well mods At all.

anybody have a few shots of a 15x10 6.5 back space wheel. on a thirdgen car without tires.
to show for ref.

Like this shot! showing the side wall would be even at best with the finder lip. if not sticking out.w/ tire mt on rim.. like in the last few shots.(wana get the Facts out is all)


this shot shows how much you have to work with in the back.
with less then 1/2" to the LCA and see marks above hand. on inner finder. (from 4.5 back space) rim. with 28x12.5 ET streets on 15x8 rims and going into a corner at 35mph with 12psi to get rub marks. the rim in this pic below. is a 15x10 6.5 back space

by going with a small di LCA 1.25 tube. you can get another 1" of room to the LCA.
the stock LCAs are almost 3" wide at the lower point in the above pic.(at finger)

also note: the date. just above the 2003 is the Bell of the rim. yes thats 6.5" deep. Dates off by 9 years..also.dead batt in cam.

this shot shows the top of the 6.5 back space rim all but toutching the bumpstop.
yes it will get removed. will never need them. but remember the side wall of the tire will stick out a min of 1" past the rim lip. just so you know.

articwhiteZ

iTrader: (56)

looking at the last few pics of this car you can see the side wall sticking out of the finder..

thinking about a 15x9 with a 6.5 and low pad. for the Weld RT-S wheels.
has the 15x10 i have now. puts the side wall out past the finder. like in his Photos.

this pic shows the 10" and 9" wide rims. the 9" wide is a med pad. going back to a low pad would give me 1" more off set outer lip. and putting the sidewall of the tire. just inside the outer finder.

this shot below shows how the 9"wide rim would pull the side wall in. just under the outer finder. note: this 9" rim is a med pad. NOT NEEDED. has the Low pad rims in the RT-S line. fit the Larger Factry REAR Calipers..by going to a low pad wheel. I will get more out side dish. by almost 2". this would look better to me also. then the above 9" rim now


one other thing about the RT-S rims. thay are all a tad but wider the listed under.expl. a 10" wide rim is a 10.25wide. and a 9" wide rim is a 9.23 wide rim in true life. just so you know. so putting on a larg drag tire is no prob. any thing that needs a wider 15" wheel would not fit under a stock thirdgen rear fender anyway.

any input on this? has m starting to pull my hair out. and running out of room for rims