997.2 require 444. Porsche issued a supplemental on these.

 

No ****?

I was owner #2, saw no supplemental. Is there a way to tap into that online?

 

that would actually explain a lot. When I first removed the locks I had to have help with the brakes, as the wheels in front were turning on my lift rails.

Ever since I haven’t needed the help, I guess because I’ve been torquing them 70 foot pounds light.

haha

 

From member 911SLOW back in August, 2011:

Removing and installing wheel with central bolt. 3-step tightening procedure (Step 1: Tighten to 600 Nm (444 ftlb.). Step 2: Loosen the central bolt again (slightly) by approx. 60 angular degrees (1/6 turn). Step 3: Tighten to 600 Nm (444 ftlb.)). The tightening torque was increased to 600 Nm (444 ftlb.) (previously 500 Nm (370 ftlb.)) in the course of model year 2011. The higher tightening torque also applies to older vehicles. 600 Nm (444 ftlb.)

Here's some more info too:
https://rennlist.com/forums/997-gt2-...read-this.html

 

So wouldn't it be safe to assume I'm fine at 370 if I don't track my garage queen?

 

If you had 5-lug wheels, would you be comfortable reducing the torque on the lug bolts by 19%? Just saying...

 

Actually, the question would remain the same irrespective of the type of wheel locking system I have on my car. The original spec was 370, and it seems the impetus for the increase in torque is tracking the car. I think it's a reasonable question.

 

I certainly would not torque less to such an extreme amount, maybe 5% less. If you do any spirited driving at all, that is, drive the car as designed, I would maintain the 444.

 

with all due respect, it seems some here think that the 370 printed in the owners manual was a typo.

I, on the other hand, suspect there's a little more to it than that. LOL

 

It wasn't a typo...the spec just changed. The supplemental owner's manual for my 2012 GTS says:

Tightening torque for central bolts:
444 ftlb. (600 Nm)

There is no reference or mention of this spec being for track only. IIRC, there were some issues with CL wheels when first introduced and this change was most likely in response.

 

370ft lb was not a typo like you are thinking...this was the original spec. But after hub and wheel issues Porsche increased the torque spec to 444ft lbs. Whenthis was changed changed Porsche recalled cars...the GT3 to inspect and or replace hubs and nuts. This all happened before the GTS was brought to market so the GTS was always torqued to the higher spec.

 

He has a TT though and as far as I know there was never a recall for the TT nor a change to owner's manual.

 

I don't think it's a typo. (that's not what I said) I think it's a very deliberate spec. Something may have happened to cause Porsche to revisit the issue, but I'm reluctant to believe that I'm in grave danger given the frequency with which I drive my car.

 

I've now read the update that was posted on another thread, but linked in this one. It definitely qualifies the 444 spec as intended for vehicles (including mine) that are being tracked.

 

Eng specs often change with added field data. The CL torque spec is defined by several parameters, and engine torque is one of them; and a torquey TT pushes that requirement up, that is, if driven as designed. But... as you say, you may just as well never bother torquing higher and just park the car and never drive it.