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GR Yaris wheel stud is too short for track use

19K views 93 replies 28 participants last post by  Philevo6 
#1 ·
Is hard not to temp to put 9.5j and 275 high performance tire to Gr Yaris
Because is design. To be run this wide tire
But there is problems
I find out stock 2 peace rotor center is very thick
Make it if u are runing aftermarket wheel the thread is barely enough~
So I never use impact tool when I change tire
And use high temp grease at stud to prevent binding

but at my last track day , when I reTQ rim after the session , find some thing funny feeling
Sure enough one of nut are strip !!!!
Man I just bought this few mo ago and only did 5 track day !!!!
so Inorder to fix this issue I am going to install longer wheel stud at front , and temporarily fix
Is to use this special made chrome molly nut
That have much larger taper base to support

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#80 ·
They said their normal taper nuts they supply would be ok but I asked about nuts with a shaft as the studs are so short and these are what they have
A guy I know with a GR Y owns a shop that sells wheels, I was talking to him and he said the stud length on the GR Y is no different to other vehicles. He's had about 5 different sets of wheels on his (mainly WedsSport.) He said standard nuts are fine.
 
#81 ·
Thanks - the shop I bought them from said the taper nuts they supply are fine and they have sold lots of sets but they will only give about 5 turns which he said is enough

they have shank nuts too though which he said they can provide and will give more thread coverage
 
#82 ·
5 turns??

People forget that the clamping force supported by those little threads is huge. As in several times the cars weight per stud. And that is before loads are applied. 5 turns, of which you can substract roughly 0,5 again as the entry threads don't support in the beginning, will leave very little margin for error and/or actual load before the thread shears off.
Can't say I would have much trust for a such a shop, nicely put...
 
#83 ·
5 turns??

People forget that the clamping force supported by those little threads is huge. As in several times the cars weight per stud. And that is before loads are applied. 5 turns, of which you can substract roughly 0,5 again as the entry threads don't support in the beginning, will leave very little margin for error and/or actual load before the thread shears off.
Can't say I would have much trust for a such a shop, nicely put...
running a nut up the equivalent of the stud diameter would be 8 turns which is the minimum I would be comfortable with. In my line of work rule of thumb is a nut needs to be tightened at very least the length equal to the diameter of the stud/bolt

But saying that lots of shops sell them with the OZ nuts without issue.
 
#89 · (Edited)
Some update
There is video about very hard to get axle nut of GR Yaris ,
This happend to me too
But luckily like OE wheel stud , this is common part from other Toyota line up
Glad my axle still in ok shape , and long stud fit pretty smooth


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