928S4 Wheels on a 944?
#1
Track Day
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Join Date: Jul 2001
Location: Southern NH
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928S4 Wheels on a 944?
I am considering replacing my 15" phonedials on my '87/944na with a set of 16" 928s4 wheels (Part nos 928-362-115 and 928-362-117). In researching the specs, I have found that the 8Jx16 rears match my current wheels backspacing(6.06") and offset (2.09"), but the 7Jx16 fronts show the correct backspacing (6.06") but a different offset (2.56")! (This info from 928 FAQ) How can this be? I thought the two measurements were dependent on each other? I just need to know if they will fit my 944, and how large a tire can I get under the fender. The stock tires liste for these wheels are 225/50/16 front and 245/45/16 rear. HELP!
#2
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Lead Rennlist
Technical Advisor
Rennlist
Lifetime Member
Lead Rennlist
Technical Advisor
Rennlist
Lifetime Member
Your 944 has the same front and rear offsets of 52.3mm.
Have you considered a set of 964 Design 90 wheels for your 944. They are 6JX16 front and 8JX16 rear. They bolt straight on.
225s on the front is a lot of tyre to haul around on a NA 944 by the way. I have no idea on an 1987 944 if they fit but they do not without modification on a 1985.5 with 23.3mm offset all round,
Ciao,
Adrian
Have you considered a set of 964 Design 90 wheels for your 944. They are 6JX16 front and 8JX16 rear. They bolt straight on.
225s on the front is a lot of tyre to haul around on a NA 944 by the way. I have no idea on an 1987 944 if they fit but they do not without modification on a 1985.5 with 23.3mm offset all round,
Ciao,
Adrian
#3
Race Director
but the 7Jx16 fronts show the correct
backspacing (6.06") but a different offset (2.56")! (This info from 928 FAQ) How can this be? I thought the two measurements were dependent on each other?
backspacing (6.06") but a different offset (2.56")! (This info from 928 FAQ) How can this be? I thought the two measurements were dependent on each other?
It's easier to visualize this if you draw pictures. I've got diagrams and procedures on wheel measurements on my website at:
http://members.rennlist.org/951_racerx