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Location:
Baulkham Hills, Sydney
Registered:
February 2003
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I supported Toymods
Location:
Perth, Western Australia
Registered:
December 2002
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 07:54
 
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Ideally, you want all the thread of the nut to contact thread of the stud, this however is difficult to check when using enclosed nuts! The other line of thinking is to have a greater amount of thread contact than width of stud, which for most small cars is at least four complete rotations of thread, and more for larger cars with bigger studs. Check the requirements yourself, before you take anyone's remarks including mine as gospel!
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Location:
Auckland NZ
Registered:
December 2003
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 08:06
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don't know about Australia but in NZ it's meant to be 7 full turns of the nut for a warrant of fitness. i've never seen it checked though
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Location:
adelaide
Registered:
October 2003
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 08:25
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on my old 180sx i use to have the nuts half on becuase i ran spacers.
i got them on about 3turns and made sure they where tight.
they never come lose on me and i drifted the shit out of it
cheers matt
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Location:
Montrose, VIC
Registered:
May 2002
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 11:16
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Yick! People that use spacers and only a couple of threads are tosspots of the first order - it does seem to work, and often you'll get away with it for ages, but they have a horrible habbit of failing at the WORST possible time. I went and had a look at a crashed car one time, reason for the crash? Dickspot that owned the thing had done the spacers/no thread trick. Dickspot is now well and truly dead, by the way... Another time I was IN a car, when Dickspot MK II that 'owned' it decided to 'have a go' at beating a falcon at the lights. The result? The car hit a gutter, and the wheel came right off! Need I even BOTHER mentioning the reason??
Changing studs is not hard. If you can't do it yourself, pay someone to - and it really is that easy! In case anyone gives a damn, as part of my current brake upgrade, I changed to 5 larger and longer studs. How long? Try over 30 turns with open ended nuts  (OK, so I went too far, but hey!)
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Location:
Canberra
Registered:
May 2002
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 11:46
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It took me about an hour per side to change the short assed studs to longer ones. That included removing and refitting the hubs to the car. 
"Old Engineers rule of thumb: Minimum 3 threads above surface of any nut". Hey if you're using blind wheel nuts, do the maths.
Anyone relying on 3 turns or so is IMHO an accident waiting to happen.
I dont care if you kill yourself, but Murphy's law says you will take out someone else! If you survive, your life is going to be hell! particularly if the ones you hurt are mine!!!!!!
regards Chuck.
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Location:
Baulkham Hills, Sydney
Registered:
February 2003
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 12:05
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I only need to change one wheel 
I was trying to replace a cracked rim and the guys down at Tempe Tyres sold me one with a different offset after assuring me that it was exactly the same wheel. I suppose I should have thought to check that one.
Anyhow, now I have 3 wheels with an offset of 35, and one wheel with an offset of 40. Tempe Tyres will refund me, but I don't want to do that unless I can replace the wheel somewhere else.
My other option is to fit a 5mm spacer, although it is a little annoying having the nuts stick out 5mm more on one wheel than any other.
The wheel is a "Diablo Burgini" or a "Zenetti Mystic" depending on who you ask and I'm looking for a 19x8.5 with a 35 offset in silver.
I bought the wheel from Tempe Tyres for $290. Hell, I'll give $50 to anyone who can find me the wheel I want locally (Sydney) for under $320 by tomorrow.
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I supported Toymods
Location:
Perth, Western Australia
Registered:
December 2002
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 14:13
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Take the wheel back, get the refund, and put the steelies back on till you find a suitable replacement. Changing the offset of only one wheel is ludicrous.
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 14:14
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Steelies? *cough* Mk4 Supra *cough*
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I supported Toymods
Location:
Perth, Western Australia
Registered:
December 2002
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 14:29
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OK, alloys, donuts, bricks, whatever, just not one odd wheel!!!
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 14:31
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Location:
tallahassee FL usOFa
Registered:
May 2002
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 17:49
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i like 150% of the bolts diameter -- a 10mm bolt needs a nut that contacts 15mm of threads.
200% would be better for wheel stuff and the ABSOLUTE MINIMUM is 100% for anything else except jam nuts.
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Location:
Baulkham Hills, Sydney
Registered:
February 2003
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 20:02
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yeah all i've got to sit the car on is the space saver.
one odd wheel might be my only choice if i can't find a replacement.
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Location:
Baulkham Hills, Sydney
Registered:
February 2003
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 20:05
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i hate driving my girlfriend's magna! 
i want my supra back! 
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Location:
sydney
Registered:
April 2003
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 22:46
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| mrshin wrote on Mon, 22 December 2003 22:16 |
Changing studs is not hard. If you can't do it yourself, pay someone to - and it really is that easy! In case anyone gives a damn, as part of my current brake upgrade, I changed to 5 larger and longer studs. How long? Try over 30 turns with open ended nuts (OK, so I went too far, but hey!)
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where can i get longer studs from? and how do they connect into the hub? just screw in i suppose?
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Toymods member
I supported Toymods
Location:
Rydalmere, NSW
Registered:
May 2002
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Re: safe amount of thread on the bolts for mounting a wheel?
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Mon, 22 December 2003 23:09
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I changed mine over from 16x7" stockies to 17x7½" chromes, and the offset is similar to stock, though I miss out on about 2 thread turns. 
The spare tyre, however, is a different matter.... having a modified rear wiper arm (from a Toyota Kluger) which is thicker than a RAV4 stocker, combined with a much wider tyre on a bigger rim means that I had to use a 10mm spacer on the rear door studs.  The rear wiper arm does get it's full swing now without jamming up against the tyre. The studs are still stock and the wheel nuts only get about 3 or 4 turns on the spare wheel, but there's no wobbling or rattling at speed, even with only 3 nuts/studs holding the wheel on.
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Location:
Baulkham Hills, Sydney
Registered:
February 2003
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Re: safe amount of thread on the bolts for mounting a wheel?
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Tue, 23 December 2003 05:47
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The end result has been...
Tempe Tyres are ordering the wheel with the proper offset in with their next shipment. Meanwhile, I will be using the wheel with the wrong offset with a proper spacer made courtesy of Neale Wheels. When the new wheel arrives, Tempe Tyres are going to buy the old rim back off me, as long as it is still in good condition.
What a run around!
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I supported Toymods
Location:
melbourne.victoria.austra...
Registered:
June 2002
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Location:
Canberra
Registered:
May 2002
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Re: safe amount of thread on the bolts for mounting a wheel?
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Tue, 23 December 2003 08:48
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Longer wheel studs are available at auto parts suppliers.
For Celica front: remove the entire brake disc and hub assemly, unbolt the the disc, then knock out the old studs. You will see that there is a spline type engagement section, under the head of the stud. The new stud has to be pulled into the hub, ensuring that the stud fully bottoms out. Rattle gun works well for this. You would be well advised to re-check wheel nuts a couple of times, after replacing studs.
Some live axle rear ends can have studs replaced without removing the axle, some cant, depends on the length of the new studs.
As has been said elsewhere in this thread, it is imperative that, the wheel centres on the hub. This is where all the weight of the car sits. Adapter rings are available at wheel shops, measure the dimeter of your hubs, and the internal diameter of the mounting hole on the wheel. Take these measurements along to the wheel shop, and pick up the adapters.
regards Chuck.
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Registered:
November 2002
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Re: safe amount of thread on the bolts for mounting a wheel?
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Thu, 25 December 2003 07:14
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Maximum strength is achieved when you have 1.5 times the stud diamter on the nut. Eg 12mm stud gets maximum hold will 18mm of nut. This is the general rule.
More contact than that makes no difference.
Cheers,
Simon
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Location:
sydney
Registered:
April 2003
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Re: safe amount of thread on the bolts for mounting a wheel?
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Fri, 09 January 2004 08:37
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| ChuckLandwehr wrote on Tue, 23 December 2003 19:48 |
Longer wheel studs are available at auto parts suppliers.
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do you mean like a repco or something? if not, what is an example store? what model celica is your tutorial referring to?
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