19 x 8.5 porsche rims
03-01-2015, 08:53 PM
#2
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You need to tell us the offset first. But 19 inch rims are generally regarded as too large and give a very uncomfortable ride along with the possibility of them wreaking havoc on your suspension.
18's are generally regarded as the largest size still comfortable on the 928.
18's are generally regarded as the largest size still comfortable on the 928.
03-01-2015, 09:34 PM
#4
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+1 on 18's . I had 19's Carerra classics wheels from an 997 on my 1980 US , very uncomfortable ride. Not sure where you're located, but you can usually find good deals on turbo twist 18's or panamera 18's .
03-01-2015, 10:08 PM
#5
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Yes, it well usually say "et" and the number follows that. Try to stay above 55 at the minimum, 60 or higher is the recommended offset for 928's.
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03-02-2015, 12:44 AM
#8
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Still tough to say without an actual offset measurement, but based on the picture below I'm going to go out on a limb and opine with that much lip on an 8.5" wide rim, there's no way there's enough positive offset there for those to fit on the front of a 928.
03-02-2015, 05:26 AM
#9
For an 8.5" wheel (I completely agree with Rob btw) you will need around 63 mm offset. Even then you will have to roll the lip on the guards.
03-02-2015, 10:40 AM
#10
You need to tell us the offset first. But 19 inch rims are generally regarded as too large and give a very uncomfortable ride along with the possibility of them wreaking havoc on your suspension.
18's are generally regarded as the largest size still comfortable on the 928.
18's are generally regarded as the largest size still comfortable on the 928.
The ride is very comfy. Far nicer than it was with the 16" and the rock hard tires.
The tire it self can make a huge difference, not just diameter of the wheel.
Lots of people here are very happy with their 19s.
03-02-2015, 11:13 AM
#11
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There are a couple of issues here, first is the offset, the 928 came with either a 65mm offset or a 60 mm offset on the Club Sport. If the wheel width is anywhere between 7 and 8 inches on the front you need to be close to the those numbers on the front rims. The rears are much more forgiving for offset and easier to find as offset is not nearly as critical as the fronts. The second consideration is tires. Stock your 928 came with tires that were 24.7" in diameter, which means the sidewall height will be 1.5 inches less than stock if you keep the diameter constant. A shorter sidewall will ride harsher and give far less protection to the wheels. Going to a larger diameter tire will have impacts on ride height, CG, front fender clearance, interference on the inside of the of the wheel well, and speedometer error (it will show lower than actual speed.
That said, I run a 255/40 on the front of my 80 Euro S on a 17*9.5 60 mm offset rim. the car sits 12 mm lower that the stock min ride height and all I needed to do was add a second rack bumper per side and have no problems with interference anywhere
That said, I run a 255/40 on the front of my 80 Euro S on a 17*9.5 60 mm offset rim. the car sits 12 mm lower that the stock min ride height and all I needed to do was add a second rack bumper per side and have no problems with interference anywhere