FourT6and2

How bad would it be if center lock nuts were torqued with car on the ground, instead of in the air? Tech hand tightened center locks with wheels off the ground, but did final torque, back-off, and re-torque with wheels on the ground.

RDCR

The nut won't clamp the wheel hub evenly unless there are no external forces when the nut is torqued. I would assume the nut not being clamped evenly would lead to less clamping pressure once the car is driven and the uneven clamping is balanced out.

FourT6and2

So I guess I should find a way to re-torque the wheels myself?

RDCR

Hopefully there was enough of the anti-seize paste left on the nuts, hubs and wheels if your tire guy didn't reapply. At the very least check your safety locks occasionally until you get the wheels reinstalled properly. If you want to come down to Santa Cruz at some point I've got the Renntorque tool and we can check & re torque your wheels off the ground. PM me if interested.

FourT6and2

Awesome, thank you.

Larry Cable

this!!!!

Larry Cable

I decided to stop messing around and I bought one of the renntorq tools - @FourT6and2 you can borrow mine - I live in RWC

elgato13

Hope you guys don’t mind inviting myself in, but I was considering biting the bullet and grabbing one myself, maybe I can “rent” yours occasionally Larry? I was thinking I would only need to use it for brake flushes/pads and wasn’t sure I wanted to eat that cost.

CaymanSinAR

Respectfully, I'd bite the bullet and buy proper tools to have on hand rather than borrow someone else's. If one of your CL nuts is too tight from being over-torqued or poorly lubricated there is a good chance you are going to accidentally break someone's $2,000+ Renntorque tool.

Spend $500-$700 and get a proper torque wrench and breaker bar.

That sounds snarky in writing, but please understand it's not.

erko1905

Surprising number of shops and/or techs are really casual with this stuff when customer isn't looking. I guess since wheels aren't flying off cars left and right, it "should" be ok most of the time, but it's definitely something I'm very concerned about.

The centerlocks are the only thing I don't like about an otherwise truly perfect car.

rcg412

Retorque it up in the air. The issue you face is that the nut (Given the high torque) is not flush on an equal plane…

CaymanSinAR

I get that. I would 10/10 choose regular bolts were they a factory option.

I'll tell you one seemingly small thing that made a big difference for me in terms of working with the CLs; I bought some cheap mechanic's coveralls from Amazon. Now I don't worry about ruining my clothes because of that darn CL paste.

ddugas01

Is it best to torque in the air? Yes
is it ok to torque on the ground? Yes
Does porsche recommend slicks? No
Do we put slicks on? Yes
Does Porsche recommend screwing around with the PSMS? No
Do we? Yes

Lets face it guys, Porsche is going to set rules that they know we wont follow so they're protected in a liability lawsuit.

Everyone who owns a GT car should know how to change a center lock wheel by themselves. Unless you carry around some stupid brake holder and steering wheel lock mechanism, you torque on the ground. I’ve changed my wheels this way well over a 100 times. I track the crap out if my car. Don't waste your money on some fancy device. Buy a torque wrench and get to it.

Palting

Bit of a contradiction there, bud. Brake holder is a cheap bar clamp you can buy from any hardware store. Steering wheel "lock" is the dude in the car parked next to you in the paddock holding the wheel for a minute as you torque and retorque each front wheel while it is UP IN THE AIR. If you already do your own wheel changes, it is a no brainer no added effort no added cost to torque wheels off the ground.

Larry Cable

I have no problem with that ... but per @CaymanSinAR comment, "you break it you buy it"... which seems reasonable I think

I also have QuikJacks and jackpoint jackstands ...

well said - "you break it you buy it"

this!!!