Eagle

what the hell kind of lug nuts are on a 7? why do they screw unto the hub? why is there a threaded hole in them? whats the zero with the arrow inscribed on them for? i mean i got the tires on my car and locked them down with an impact but i had to loosen the actual lug nut to fit the wheel over them and im just worried that the lug nut itself is not tighened on the hub.

Eagle

alright i know somebody on this thread has takin one of their wheels of before. what is up with rx7 lugnuts?

Tom

They're lug bolts not nuts. They are designed to screw into the hub.
If I'm understanding you correctly- you managed to rip-off the bolt-head? If so- they are trashed and you'll need new ones.

85rotarypower

Well, before you go all crazy on us, they are called lug bolts. They aren't actually a nut with a stud thats screwed into the hub. I don't get what your saying though. They just screw into the hub and in the end, they are just like a lug nut and stud. The only difference is that the stud is attached to the nut, to put things into perspective.

Damn you. you beat me too it.

Eagle

ok i guess yall dont get what im asking. i know that they screw into the hub, but when i put the wheels back on the car i had to loosen the lug bolts to fit the wheel on because they are like lop sided. if u have ever taking them out u would know what i am talkin about. anyway, if u dont get any of that just answer this question. when i tighten the lug NUTS, with an impact, does that also tighten the lug BOLTS into the hub? im just worried about my wheels popping off when im goin down the road...

YapaKanichi

are you talkin aobut that large nut in the center of the rotor? large nut lol. Or are you talking the bolts that tighten the wheel to the rotor or the rotor to the car? OR are you talking about yuor steering wheels hub

RitcheyRch

They are lug bolts which are similar to what is used on a VW bug. I am not sure why Mazda chose to use this style instead of the old fashioned lug nuts with push in studs like use on most cars.

85rotarypower

We still don't get what you are saying. If I understand somewhat, you are confusing something with something else. They are LUG BOLTS. In other words, they are just like a bolt that screws into the hub. There are 4 of them on the RX-7 wheels. All you do is screw them into the hub through the wheel in the correct spots and tighten them down. Not too difficult to understand really. There should be nothing in the hub that holds the wheel on when the wheels are off. Thats why its confusing.

On the rear drum brakes or brake rotors (depending on the model you have), there are just two little screws to hold the drum on the rotor onto the hub. The bolts go through the drum or rotor and thread into the hub. On the fronts, the lug bolts just thread into the rotor. Its all contained in one unit, the hub and rotor, on the front.

Eagle

ok, obviously yall dont have the lug nuts/bolts that i have or else u would understand exactly what i am saying. either that or you have never takin them out. on my car, lets say on the front passenger wheel. there is a (hub i guess you call it) that four lug bolt things scew into. on one end of the lug bolt is a small thread that screws into the hub deal, on the other end is the threaded part that the lug NUT screws onto. INSIDE the lug BOLT is another threaded area, anybody know what thats for? on the end of the lug BOLT there is a "0" and an arrow, inscribed on it, anybody know what that is for? now the thread that screws into the hub is off center on the lug BOLT. so it "wobbles" when you screw it in. if its not screwed in a certain way, the wheel will not fit. what i am MAINLY tryin to get out of this thread is that if i tighten down the lug NUT will it also tighen down the lug BOLT into the hub? like i said before, i just dont want my wheels falling off down the road because the lug BOLT is not tightened...

Rotofire

okay i think i get what he's asking, the nut and stud are once peice, you tighten the head of the bolt (nut looking deal) and it screw the (stud part) bolt into the hub. why would loosen the lug bolt to put the wheel on, woldn't you have to take it completely out?

-wheel didn't read the last response. What model is your car? it might have changed or somone who had the car before you might have changed them for some unkown reason.

rcurrier44

Oh **** now I see what you are saying.

You have a stud that screws in to your sindle/rotor but it is offset so it will fit a different lug pattern when you screw the lug nut on. Sounds like someones home made adaptor to me. Never seen one before. Get us a pic!

I would bet you should first screw the stud into the rotor/spindle as far as you can get it. The "0" and arrow probubly are matched to the offset of the stud. I would guess they would mean the arrow needs to be pointed to the center of the rotor; this will insure that your rim is centered on the spindle/rotor. So you may have to loosen the stud up a bit to get the arrow pointed in the correct direction.

Then put your wheel on and thread the lug nuts down. Hopefully your stud stay in the correct orientation. If it doesn't than you are going to have a horable shake when driving.

rcurrier44

I have no idea what the other threaded area "INSIDE the lug BOLT" is. If it is on the back side of the rotor/spindle; it may be for a lock bolt that you jam aginst the back side of the rotor spindle to keep the stud from turning while you put on the lug nut.

Could also be for some "alignment plate" if it is on the lugnut side.

I realy am just pulling out ideas here because I have never seen this used on a car before...however I have seen offset studs like you describe used eslware.

Anex 570

Uh oh, I understand what he's saying now, he's talking about haveing studs like a manifold stud. The way I see it is that they're not safe at all and shouldnt be used on wheels, that spells trouble. Get the stock lub bolts witch have a thread on one end and the hex nut on the other, which are one piece.

red13brx7

well whatever you are talking about.. I would go get a set of stock lug bolts and be done with it. It would make matters much more clear.

rcurrier44

If these studs are used as wheel adaptors than he will also need new wheels if he goes to normal lug bolt...or he could use a real wheel spacer/adaptor.

Persionaly I would also be skeptical as to how strong they are...the offset is going to be a big stress riser.

rcurrier44

Every manifold stud I have seen has been streight...no offset. As long as it is streight a stud/nut will acualy be stronger than a bolt. I just don't trust the offset.

What are the 2 lug patterns??? 4x110 and 4x114??? is there about a 2mm offset to these studs? I would guess that it would adapt between these 2 lug patterns (if they are the correct ones).

Dcrasta

I think his lug bolt became seperated. They are two piece bolts. The stud part (the threaded piece) and then the 'cap' that is the hex sided part. They can come apart, if they do u can press them back on (I actually used super glue to hold it together). U might want to install some real wheel studs

85rotarypower

No, it looks like someone installed screw in studs on his car. Basically, the stud screws and then you use the lug nut on that.

theweasel

How about a pic?

red13brx7

pics would definitley help

Eagle

ok i will try to get yall a pic but it wont be until this weekend. last weekend was the first time the car has been driven in seven years and it shook like hell but i figured it was because the tires were not balanced and the front end wasnt aligned. maybe these lugnuts have something to do with it. now my lug bolts are one piece. theres the tread that goes into the hub and it IS connected to the threaded part that the lug nut screws onto and there is also a hex shaped part on the lug nut part, but yes the whole thing is one piece. i still dont think yall understand why i cant get the wheel on when i screw them in. the thread that screws into the hub is off-centered ON THE LUG BOLT. do this... take a quater and place the eraser of a pencil on the eagles head. think of the quater as the part the lug nut screws onto and the pencil as the part that screws into to hub. thats how i mean off centered, so when i screw it into the hub it changes the lug bolt pattern and i have to play with them to get the wheel to fit on.

Anex 570

You HAVE to get new ones, Immediatly!!! thats not good at all. They're eaither about to break or bent when the car hit something.

comeonstart

what if, you put half of them on then the tire, then the last piece. Are they aftermarket rims?

Tom

definately pictures are in order.

mckinneyml

Just a note of caution. Don't overtighten the lugbolts. If I use an impact wrench I don't tighten them down all the way and then I tighten the rest by hand. Also they make flexable sticks for the impact wrenchs for different torque ratings. They flex when you exceed toque cabacity of the stick and keep you from over tightening the bolts.

Local tire place over tightened my friend's '68 Camero. He had to jump up and down on the lug wrench to get it loose.