Please help with wheel fitment
09-30-2018, 12:19 PM
#1
Race Car
Thread Starter
Please help with wheel fitment
Hi! I'm considering buying these wheels for my 88 n/a 944. I'm a wheel fitment retard.
Will these bolt up and fit nicely on a late model 944? Thanks!
https://www.cip1.ca/ProductDetails.a...e=C32%2DFU172B
Will these bolt up and fit nicely on a late model 944? Thanks!
https://www.cip1.ca/ProductDetails.a...e=C32%2DFU172B
09-30-2018, 01:37 PM
#2
Nordschleife Master
They will fit but they will be closer to the fenders than the et52 offset wheels your car came with, so watch for any rubbing which may require you roll the fenders for clearance. They are also cast and obviously bigger than stock size, so being heavier they will somewhat make the car handle worse. Imo they look nothing like the era of Fuchs fitted to our cars, but hey if you like the look that’s all that matters. Post some pics up after you fit them and a review 
09-30-2018, 02:35 PM
#3
Drifting
Noah , they appear to be available only in17x7 , not sure if Fuchs look alike will do it on a 944 !
Oh , and by the way, i managed to save your old head , it had one bent valve , 3 were sealing at 55% and
the rest were at 80-85 % and we had to take off another .004 due to warpage.
It was a good time for a rebuild , i'll send you some pics of the new race engine i'm building !
The old one has a big hole in it ...
Oh , and by the way, i managed to save your old head , it had one bent valve , 3 were sealing at 55% and
the rest were at 80-85 % and we had to take off another .004 due to warpage.
It was a good time for a rebuild , i'll send you some pics of the new race engine i'm building !
The old one has a big hole in it ...
09-30-2018, 08:51 PM
#4
Rennlist Member
Hi! I'm considering buying these wheels for my 88 n/a 944. I'm a wheel fitment retard.
Will these bolt up and fit nicely on a late model 944? Thanks!
https://www.cip1.ca/ProductDetails.a...e=C32%2DFU172B
Will these bolt up and fit nicely on a late model 944? Thanks!
https://www.cip1.ca/ProductDetails.a...e=C32%2DFU172B
09-30-2018, 09:50 PM
#5
The above image isn't entirely correct, but it doesn't really matter here.
The Cip1 wheels would sit 12mm further out than the stock 7". FWIW, Cip1 is only a retailer. IIRC the wheels are produced by John Brown Wheels.
The 5x130 version is the correct bolt pattern, don't know if hub bore is correct or if different seating lugnuts are required.
If it is a "Fuchs" style you seek, there are several companies that make replicas in 17". Fuchsfelge/OttoFuchs, the original supplier, makes a 17" version that would fit.
https://rennlist.com/forums/wheel-an...hs-repros.html
The Cip1 wheels would sit 12mm further out than the stock 7". FWIW, Cip1 is only a retailer. IIRC the wheels are produced by John Brown Wheels.
The 5x130 version is the correct bolt pattern, don't know if hub bore is correct or if different seating lugnuts are required.
If it is a "Fuchs" style you seek, there are several companies that make replicas in 17". Fuchsfelge/OttoFuchs, the original supplier, makes a 17" version that would fit.
https://rennlist.com/forums/wheel-an...hs-repros.html
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10-02-2018, 11:29 AM
#8
Instructor
Wheel fitment is easy math, don't trust anecdotal evidence or pictures of other cars. Offset is calculated from the center of the wheel. Let's use a 8" wide late offset wheel example:
1. Take your width and divide by two. (8 inches*(25.4mm/inch)) / 2 = 101.6 mm
2. Add offset to find the position of the hub face w.r.t. inner edge of the wheel. 101.6 mm + ET 52.3 mm = 153.9 mm
3. Subtract offset to find the position of the hub face w.r.t. outer edge of the wheel. 101.6 mm - ET 52.3 mm = 49.3 mm
Now you have a baseline to compare to. Do the same for your new wheel size to determine how the inner/outer edge of the wheel will be positioned.
Let's compare that with an early offset 8" wide wheel.
1. Half-width is the same = 101.6 mm
2. Hub position w.r.t. inner edge for Early offset 23.3 mm = 124.9 mm, comparing to the late offset 153.9 - 124.9 = 29mm towards the outside of the car (this will give big clearance)
3. Hub position w.r.t. outer edge = 78.3 mm, comparing to late offset 49.3 - 78.3 = 29mm towards the outside of the car (this will rub the fender if it fits under at all)
Don't forget to take into account tire width as well. Even for the same size from one manufacturer to another the section width will vary. Measure carefully how much clearance you really have to work with at the extremes of the tire movement (suspension travel, full steering lock) before you go buying wheels and tires.
1. Take your width and divide by two. (8 inches*(25.4mm/inch)) / 2 = 101.6 mm
2. Add offset to find the position of the hub face w.r.t. inner edge of the wheel. 101.6 mm + ET 52.3 mm = 153.9 mm
3. Subtract offset to find the position of the hub face w.r.t. outer edge of the wheel. 101.6 mm - ET 52.3 mm = 49.3 mm
Now you have a baseline to compare to. Do the same for your new wheel size to determine how the inner/outer edge of the wheel will be positioned.
Let's compare that with an early offset 8" wide wheel.
1. Half-width is the same = 101.6 mm
2. Hub position w.r.t. inner edge for Early offset 23.3 mm = 124.9 mm, comparing to the late offset 153.9 - 124.9 = 29mm towards the outside of the car (this will give big clearance)
3. Hub position w.r.t. outer edge = 78.3 mm, comparing to late offset 49.3 - 78.3 = 29mm towards the outside of the car (this will rub the fender if it fits under at all)
Don't forget to take into account tire width as well. Even for the same size from one manufacturer to another the section width will vary. Measure carefully how much clearance you really have to work with at the extremes of the tire movement (suspension travel, full steering lock) before you go buying wheels and tires.