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I have heard or read many times that the base of the shield on the wheel cap should point to the valve stem, but every Porsche illustration that I have seen has the chief (top) of the shield towards the stem, like this (from the '92 GTS OM and the '86 WSM):
For the span of years hat I've owned Porsches (over 40...), starting with a 356, the point at the bottom of the crest points to the valve stem.
Remember that the 'red' stud and the location guidance on the locking lugs are only guidance for dealer techs working on the cars. The cars were originally fitted with wheels in that position, and the guidance allows the techs to fit the tires wheels lugs in exactly the same relative positions. It's only useful when troubleshooting vibration or handling issues with the original tires and wheels fitted to their original positions on the car. We religiously follow the WSM guidance, of course, since it is God's Truth. I do it for consistency, and have identifying marks on each wheel (L or R) so the same wheels go back in the same relative positions even after new tires are fitted. It serves no purpose unless I need to chase a vibration or noise that might be tire-related.
Whoa! I may be new to 928's but not to Porsche, so I noticed an egregious error on your car: the Porsche crest on the wheels must point to the valve cap. If you've been getting funny looks, that's why.
!!
Well isn't my face red!
Anyway...fixed...well...maybe. Um... I think.
I just decided to put five locking nuts per wheel. so I'm good to go either way.
08-31-2014, 08:50 AM
