Wheel Nut Torque for HPDE/Track usage for 991.2 Carrera T
 

Hi Team,

I am new to this forum and have some questions regarding the wheel nut torque for my 991.2 Carrera T for the track day (I am living in Bay Area, Laguna Seca and Sonoma are the tracks I went most often).
Recently I went to this local Porsche specialist motorsports shop for the track day prep (change brake pads, etc.).
After the visit, I sent a message to the owner and confirm the technicians had torqued the wheels and what value they were using, and he replied me the message saying they are using 95 ft-lbs.

Since I have read the manual before and the owner's manual explicitly said 118 ft-lbs should be used, which made me confused whether I should I use 95 or 118 ft-lbs when torque the wheel nuts on my Carrera T?
I asked the shop owner why they torqued 95 ft-lbs instead of the value specified on owner's manual, and below was his reply
I try search online and could not find my answer, thus would like to ask other experienced drivers here. Wondering what are your opinions for this question?

What is the recommended Wheel Nut Torque for HPDE/Track usage for 991.2 911?

The answer is: Whatever your owners manual states. If the shop owner gave you a different number, you'd need to ask him why and if he torqued them to the wrong number, you should rectify that right away.

BTW - The number he cited is correct for some of the older cars.

I use 115 for my 981 track car and both my 991.2s. When in doubt, follow the manual.

Originally the owners manual stated that the silver colored lugnuts are 95. If you got the black ones there was an update with the manual that stated 116. This started about the time the 987 Cayman R came out.

Correct, old value is 95, new recommended value is 118 so use new value of 118

Effort
 

Breaking loose hot lug bolts tightened to 118 takes considerable effort compared to 95. I had better re-read my owners manual and dial in the correct torque.

As others have stated, you're not going to damage the wheels or hubs by torquing to the factory specs. More than that however, I'd be a bit suspicious of your indy shop. The key to not damaging your hubs or wheels when torquing the wheel bolts is to ensure that the mating faces are true and free of debris and tightening the bolts progressively in a star pattern. Over-torquing by a small amount will not damage the hubs if you do it correctly. Any good mechanic should know that.