Save Your Car on Road and Track Day

Save Your Car (GR) and Money, this isn't just a slogan!!
When I say that there are few things that are really important for safety, you may think of brakes and tires. Absolutely right, but also wheel studs make a huge impact!!
In this video I will explain why failures happen and how to prevent them.
On top, a few good suggestions not to make your car unsafe by installing low quality parts that recently have proven to brake down on a very famous GR!!
In fact, Toyota GR Corolla and GR Yaris wheel studs are very short, so when replacing wheels with aftermarket units that are wider, you most probably will have to change the studs, be safe!
TIMESTAMPS
00:00 - Intro
00:10 - Importance of Wheel Studs
01:25 - OEM vs WIBORG
02:05 - Failiures & Reasons
03:35 - Installation
04:15 - How to stay safe
05:45 - Outro
Music Credits:Lo-Fi-Bloom_AdobeStock_832209738
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[@AJClubsport]

have already experienced issues with your wheel studs?

[@wubziz4769]

Hey AJClubsport, great video!
I did not have any issues with the wheel studs on my GR Yaris.
I was thinking about upgrading to wheel studs made out of titanium (Phil from Rötheli Racing has some) and lug nuts made out of titanium to save some weight.
Would that be a good idea or should I stay at steel wheel studs and steel lug nuts?
What material are the wiborg wheel studs made of?
Galvanized wheel studs would make titanium brittle, if I would use steel wheel studs with titanium lug nuts.

[@Kirtanus]

​@@wubziz4769just for me titanium studs have low value/money coefficient. It's ok when Phil puts 100k euro in the time attack build, but for daily there are cheap mods AJ mentioned in other videos.

[@AJClubsport]

Thankyou mate!
The Titanium option is a good one, although I would be changing them every few years, as opposed to steel. The Wiborg are 10.9 steel, motorsport grade, with a proper coating on them

[@DanielHernandezBC]

No problems, tracking with Nankangs CRS

[@apex_gr]

Would love more about the tensile strength topic this is interesting info AJ!

[@AJClubsport]

Don’t want to let down, but I’m afraid to become too geeky 😅

[@Sprintcup1]

Hello AJ great info and details, I do have one question as regard to the spiggot ring on the hub, I always thought this carried most of the vertical load on any wheel, acting against sheer, I understand that the correct Torque is a given.
Seeing Chris's car like that is worrying for anyone, great video as said 👍

[@AJClubsport]

Thankyou Russ and hello! Actually the spigot ring has more of a centering function: what carries the vertical load is the union between the rim and disc, therefore if the torque is loose, the force is directly transmitted to the bolts, hence failing. On top of that, if the quality is low, they are more prone to failure

[@ferradar]

Great video!!

[@AJClubsport]

Thankyou ❤️

[@p3lwo]

Just catching up here mate, it looks like my failure was caused by insufficient clamping force. I was using the OEM torque spec but obviously that is for OEM aluminium studs and flat seated nuts. Hardrace confirmed to me that 104NM is correct but evidently not, all five studs have sheared because the hub assembly rotated separately to the wheel. So I would suggest anyone changing from OEM to steel studs to also increase torque rating to 120/130NM

[@AJClubsport]

Yes mate, this is the most probable cause, together with the material not being of the right tensional strength or quality!

[@alita9950]

I don't have 10.9 marked on the bolts but marked as ARP good enough ?

[@AJClubsport]

Arp is a very good brand: for sure they are the right tensile strength. To make sure, certainly they will have noted it on their catalogue

[@HPAddict]

Stock studs with the right torque specs is fine?

[@Kirtanus]

With stock wheels and tyres - yes. If you put more pressure on the car with wider stickier tyre, and especially new rims, better have long ones.

[@AJClubsport]

Yes mate, as @kirtanus said very well!

[@HPAddict]

@@AJClubsport Thank you guys!