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You really want the 8 inch fronts which were the std size. 7.5’s are not nearly as desirable. Refinished wheels with 8 inch fronts go between $3500 and $4500 US.
Is this the good size for a 993 nb ? Whats a fair price ? 18" Porsche Twist Turbo 1 Hollow Spoke
Front 7.5" et50 part# ☆993☆ 362☆ 134☆ 05
Rear 10" et65 part# ☆993☆ 362☆ 140☆ 04
Bolt Pattern 5x130
1 - yes they are a perfect size. I never understood the disdain that Rennlist has for the 7.5J Hollowspoke. On or even off the car, you would never notice the difference.
....and yes I do have both, in pairs, and the measurable difference is a thin paperback book, one of those child readers.
2 - you need to check those part numbers with the seller - the 140.04 rear is the Solidspoke 10J version.
You really don't want those. They weigh the same as the Empire State Building. Each one.
Here is your OE wheel bible, courtesy of Florian Seibold.
3 - as to value - yes the 8J front is worth more as it was made in much smaller numbers, but the converse is that the 7.5J is much much much easier to find a replacement if required
And it weighs slightly less as well, obviously.
Your choice.
Last edited by orangecurry; Jun 2, 2023 at 05:14 AM.
I have heard over the years (unattributed of course) that the hollows are less robust that the solids and more subject to road damage (potholes). Is there anything to that?
My understanding from numerous posts here and this technical bulletin is that the 7.5 inch fronts were not offered on the 993. They were early 996 and Boxter wheels…and yes, I know the part number starts with 993.
My understanding from numerous posts here and this technical bulletin is that the 7.5 inch fronts were not offered on the 993. They were early 996 and Boxter wheels…and yes, I know the part number starts with 993.
Thanks. Can you post the entire page 6 so I can see the applications at the top and keep a copy for my records. It’s interesting that my docs are dated 1997 and has no listing for the 7.5’s. Yours is dated 1999 which is the year the 996 came out and shows the 7.5’s. Wonder if they added the 7.5’s in 98 or 99?
Thx guys for the info, seller marked them sold. but now i know what to look for.
For performance oriented use
min 8ET50 or 52 front and 10 ET65 rear, these will fit any 993 at any height w/ 225/40 & 265/35 tires
even better is 8.5ET54 & 10ET65 you could use 225/40 & 265/35(second best performance choice) or 235/40 & 275/35 or 245/35 & 285/30(best performance choice), though this last is very tight
any ET numerically smaller pushes the tire outboard by the difference in ETs, as the ET goes down your envelope for ride height goes up.
Thanks. Can you post the entire page 6 so I can see the applications at the top and keep a copy for my records. It’s interesting that my docs are dated 1997 and has no listing for the 7.5’s. Yours is dated 1999 which is the year the 996 came out and shows the 7.5’s. Wonder if they added the 7.5’s in 98 or 99?
It's just the updated 4440 TSB which is on the internet. No secrets.
My 7.5Js are datestamped 1997, so the documentation above trailed the actual production. My 8Js are datestamped 1996, SM may have been making both in 1997, or they may have switched.
The interesting thing is that SM made just one face (from sometime in 1997) for the rear 9J and the 10J, and attached a different barrel to complete the wheel. I've never seen any info on that being done for the fronts, which you could say implies they had decided to stop making the 8J in 1997 sometime - maybe they had a stockpile that was greater than the number of 993 shells remaining..... we'll never know.
The first mention of the 7.5 inch wheel for a 993 is in 1999 under “winter wheels and tires”. It would be interesting to know if 7.5’s ever came on a 993 at delivery. My 1996 Owner’s manual lists 8’s only for front 18’s. Anyone have a 1998 manual that they can check? I have experience with collector car and bike restorations, so this topic is interesting to me.
The first mention of the 7.5 inch wheel for a 993 is in 1999 under “winter wheels and tires”.
That copy I showed is printed/dated 1999 for sure, but the TSB is actually version/dated 2/98 - the earlier one you have is actually 'TSB issue version/date' 4/97.
Again this matches the datestamps on the wheels that I have seen, if all '18" Turbo' wheel sizes were available from sometime in 1997.
Note that even your 4/97 version of the TSB details the Carrera 17" wheel with the 996 part number.... as we all know, if anything is available to be sold, Porsche will sell it to you
Last edited by orangecurry; Jun 4, 2023 at 05:46 AM.
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18in hollow spoke question
