is this wheel tire combo going to fit?

[khan0165]

check these out...
http://adaptitusa.com/5x120to5x120wheeladapter.aspx

you can also do your own google search on "Adapters" and "Spacers"
unfortunately, same bolt pattern (5x4.75 to 5x4.75 BP) adapters are still rare. So it may be tricky to find quality ones. I also looked at the ones you saw on summit. The "Trans-Dapt" ones... DO NOT BUY THESE... I warn you. I used them on a car, and they almost shattered. It was very dangerous, and could have killed me. They are cast alloy, and I think they are made in China... very cheap, and terrible.

Another option is to have your own made. This is often what people do, because they want to keep their wheel studs, and adapter studs, the same thread pitch. For example, you will find most adapters have the new 12x1.5mm metric thread pitch, while our old cars often have 7/16-20 or 1/2-20 imperial studs. So, it may be worth it to get a machine shop to make you custom adaptors. They can even make them from billet steel, which would be even stronger than the 6061 alloy.

I know someone who had 1" adaptors made at a machine shop for his corvette, out of steel, because he wanted to keep a common 7/16-20 stud thread pitch. It cost him $200 I think.

Another warning though... imperial thread studs are becoming very uncommon. So, it may be cheaper just to replace your hub studs with newer metric studs. I think 12x1.5mm is very common these days. And then just buy new adaptors, because 12x1.5mm are the most common ones.

Hope this helps...
feel free to ask if you need anything else

 

[stockgp]

those look perfect.

my studs are already metric 12x1.50, so no worries there.

interesting that you tell me about adapters for different bolt patterns right now. i've known they existed for a while, just never occured to me that this is what i needed.

i say it's interesting because i found a set of wheels the other day i'd love to have. only problem is they are ford 5x5 bolt pattern. i never even thought about using adapters for them.

now i'm thinking about going back for them and seeing if i can use them for winter wheels.

these are the ones i found:

http://cache.jalopnik.com/assets/resour ... am-van.jpg

don't know if it's just me, but i love these things

 

[khan0165]

cool,

you know these are "Turbine" rims, and also came on the 70s Corvettes with the proper 5x4.75" bolt pattern? I love these too.

I think they came in 15x8.5" wide... Atleast, thats what they were on the vette. So, it may be tricky to fit them in the front of your car. But I may be wrong.
I've also seen some that were 15x7 and 15x8.

You'll also find some from Dodge cars, I think they came on the 60s Chargers. But here you'll be at 5x4.5" bolt pattern.

Anyways, keep your eyes open, these were available on alot of old cars.

 

[gbodyera]

nope. stock 7.5. I have the same Enkei wheels as "83CutlassSupreme?" They look similar to the firebird GTA rims. IIRC They even have a 5'' bs. But my 20's have 6'' bs and they just rub on the edge. I may use my adapters I have or just may buy a couple of thin spacers.

 

[stockgp]

i'm aware that they are called turbines.

i even found a few with the proper bolt pattern. but they are always missing one or have broken spokes.

the set i found on the ford truck are almost perfect. they just need cleaned up

 

[kingcolbert83]

http://www.ezaccessory.com/5_Lug_Adapte ... n_s/45.htm
Only thing I dont like is they dont have as many sizes as the other site posted.

I was looking at adapters the other day. The wheels I want are ford wheels but they will look absolutely great on my car. They are the magnum 500 wheels, which are basically the buick rally wheels. I am obsessed with staggered fitment wheels and the 20x10 have a 7.2 backspacing. I know I will have to push them out and if I have to make some adjustments to run fender flares I will. I might just go that route anyway. This way I know I can run and have space for a 295/30/20. Tell me what you think because I am obessed with getting these wheels. They give me that classic look but in a upsized wheel.

I dont know why the pictures have a x on them. With these wheels do I order my spacers for the backspacing or the offset? I've been tol that backspacing is the old way of getting wheels for cars and offset is the new way. Our vehicles are low to zero offset. If I order a 1.5" spacer that would put me in the range of +6 offset. I am assuming if I do it by backspacing that would put me in the range of 5.7 with the spacer/adapter. Correct or wrong?


http://customerpics.americanmuscle.com/ ... 9&id=15308

Here is link to wheels on the car.

 

[khan0165]

yeah, these are real cool wheels... You know, in the 60s and 70s, almost every company had their own versions of the "Magnum" wheels. The Buick GS, Chevelle SS, Mustang, even Dodge, all had their own versions. They varied the shapes of their spokes, and sizes ofcourse. I think the 90's Mustang Mach 1 also came with these, but they were 18" or 17"s.

"Offset" has always been confusing to me. It is the measure of the distance of the mounting surface to the center of the wheel. Zero(0) is absolute center on the wheel, and the mounting surface can be (+) or (-) or (0) to it. If your offset is (0), it means your mounting surface is exactly center. The more (+) the offset is, the Bigger the BS is. The more (-) the offset is, the Smaller the BS is.
And, for added confusion, they've decided to do offset in mm, not inches... ha ha

Backspacing is very simple (in my eyes)... It is as simple as the distance from the mounting surface to the back of the wheel. That's it... There is no guessing where the center of the wheel is... And since wheels are measured in inches, there is no converting of units from inches to mm.

They say you should stick to 4" Backspacing to be safe on a G-body. On a 8" rim, 4" BS is (0) offset...
8" divided by half (to give you neutral offset) = 4"
on a 8" wheel with 4.5" BS, it will be a (+) offset... (I think it's +15mm)
on a 8" wheel with 3.5" BS, it will be a (-) offset... (I think it's -15mm)

but the formula isn't always so simple... For example, on a 7" rim, 4" BS will give you (+) offset... (I think its +25mm)
it can get confusing really fast... So I always just say stick with 4" BackSpacing...

It's true, the NEW way of measuring wheels is by Offset... that's just how they are listed in a manufacturer's database. But they should also have the BackSpacing information. So always ask...

Well, sorry for the lecture, but I hope what I said makes sense, and I hope it helped...

Ha ha

 

[lukeduke]

I have 20/8.5 coys they have like a 4.5 backspacing or something on my cutlass. They are a very tight squeeze. In my research I've found that a 20/10 wheel requires wheel tubs and frame mods.

 

[kingcolbert83]

yeah, these are real cool wheels... You know, in the 60s and 70s, almost every company had their own versions of the "Magnum" wheels. The Buick GS, Chevelle SS, Mustang, even Dodge, all had their own versions. They varied the shapes of their spokes, and sizes ofcourse. I think the 90's Mustang Mach 1 also came with these, but they were 18" or 17"s.

"Offset" has always been confusing to me. It is the measure of the distance of the mounting surface to the center of the wheel. Zero(0) is absolute center on the wheel, and the mounting surface can be (+) or (-) or (0) to it. If your offset is (0), it means your mounting surface is exactly center. The more (+) the offset is, the Bigger the BS is. The more (-) the offset is, the Smaller the BS is.
And, for added confusion, they've decided to do offset in mm, not inches... ha ha

Backspacing is very simple (in my eyes)... It is as simple as the distance from the mounting surface to the back of the wheel. That's it... There is no guessing where the center of the wheel is... And since wheels are measured in inches, there is no converting of units from inches to mm.

They say you should stick to 4" Backspacing to be safe on a G-body. On a 8" rim, 4" BS is (0) offset...
8" divided by half (to give you neutral offset) = 4"
on a 8" wheel with 4.5" BS, it will be a (+) offset... (I think it's +15mm)
on a 8" wheel with 3.5" BS, it will be a (-) offset... (I think it's -15mm)

but the formula isn't always so simple... For example, on a 7" rim, 4" BS will give you (+) offset... (I think its +25mm)
it can get confusing really fast... So I always just say stick with 4" BackSpacing...

It's true, the NEW way of measuring wheels is by Offset... that's just how they are listed in a manufacturer's database. But they should also have the BackSpacing information. So always ask...

Well, sorry for the lecture, but I hope what I said makes sense, and I hope it helped...

Ha ha

yes offset and backspacing combined are confusing. I think I will just measure my current space and subtract that from the wheel backspacing and order my adpter/spacer that way.

 

[kingcolbert83]

I have 20/8.5 coys they have like a 4.5 backspacing or something on my cutlass. They are a very tight squeeze. In my research I've found that a 20/10 wheel requires wheel tubs and frame mods.

Why would wheel tub be required unless you wanted the wheel to sit under the wheelwell for tucking purpose? Thats the purpose of spacers right? I dont have a problem with the wheel rubbing the outer fender lip. That just gives me more reason to run some fender flares.