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If I have a cayenne without the arc extension kits that come with some of the wheels…
if I purchase the spyder rims for example in the future (staggered set) will they stick out without the arc extension? Or will they be in line with body without the extensions to begin with.
Another way to questions... has anyone purchased the car with standard wheels and then put 21/22 inch wheels on it? Was there any issues without the arc extensions?
You don't say which model you have. I assume 6 cylinder. The problem is each wheel diameter is successively wider. You need to spend time surfing sites to compare tire circumference and width for each tire size. You can then estimate the difference in circumference (divide by 2 for radius) and width, for your current setup vs your intended setup.
Compare the difference calculated above compared to the space you have available between your current tire and nearest wheelhouse surface. Do the measurement on the rear axle, and consider that the front steerable axle will be a more difficult situation.
You don't say which model you have. I assume 6 cylinder. The problem is each wheel diameter is successively wider. You need to spend time surfing sites to compare tire circumference and width for each tire size. You can then estimate the difference in circumference (divide by 2 for radius) and width, for your current setup vs your intended setup.
Compare the difference calculated above compared to the space you have available between your current tire and nearest wheelhouse surface. Do the measurement on the rear axle, and consider that the front steerable axle will be a more difficult situation.
Page 345 of the 2021 manual:
Thanks!
It's for a 2024 Base which unfortunately I can't measure obviously.
What I ended up doing is ordering the base wheels as I needed a winter set, and was going to order a HRE set for the summers. Obviously the standard doesn't come with arc extensions, now I'm worried the HRE ones will stick out.
Standard wheels/tires are
Front axle: 9.0Jx20 ET 50 with tires 255/55 ZR20 (110Y) XL
Rear axle: 10.5Jx20 ET 64 with tyres 295/45 ZR20 (114Y) XL
HRE Rims/Tires are (they are same as if I was to get 22'' options from Porsche)
Front: 10J x 22 ET48 wheels with 285/40 R22 tires
Rear: 11.5J x 22 ET61 wheels with 315/35 R22 tires
So not sure if the arc extensions are purely cosmetic, just to stop some road debris, or do the tires actually come out and fill the space there (so they will stick out of the car without arc extensions).
You can do the homework on the circumference and width difference online, then go to a Porsche dealer or two and measure a 2024 with unpainted arches in stock, if there are any available to measure.
Not likely many people have taken delivery of a 2024 with unpainted wheel arches, and that who are active members of this site.
The 2023 configurator had the tires sizes for each wheel choice, and also indicated that extensions were included for 21" and 22" wheels, but not 19" or 20". So if your tire choice matches the size of the OEM 19" or 20" wheels, you don't need extensions.
The painted wheel arches do extend out further than the black plastic ones, but I don’t recall ever seeing an actual measurement. Best would be to look at both at a dealer to gauge the difference.
Your HREs will each be about 1/2” further out than the stock wheels (1” wider with about same offset). I use willtheyfit.com to compare wheels and offsets.
If I have a cayenne without the arc extension kits that come with some of the wheels…
if I purchase the spyder rims for example in the future (staggered set) will they stick out without the arc extension? Or will they be in line with body without the extensions to begin with.
I added 21” Spyders in place of the std. 19s in a 2020 base. The Spyders sit flush with the stick black arch extensions by I added the painted wheels arches because I like the look better. They are a few millimeters wider, but not much.
Stock black wheel arches Wider, painted wheel arches
I added 21” Spyders in place of the std. 19s in a 2020 base. The Spyders sit flush with the stick black arch extensions by I added the painted wheels arches because I like the look better. They are a few millimeters wider, but not much.
Stock black wheel arches Wider, painted wheel arches
Thank you so much! looks great!!
Tire sizes did you use the 315 for the backs on the Spyder rims?
I added 21” Spyders in place of the std. 19s in a 2020 base. The Spyders sit flush with the stick black arch extensions by I added the painted wheels arches because I like the look better. They are a few millimeters wider, but not much.
Stock black wheel arches
Looks like plenty of space with 21" wheels, corresponding tires, and base unpainted arches. This directly answers the question in the original post, agree @jasdhaliwal ?
Tire sizes did you use the 315 for the backs on the Spyder rims?
Yes, 315s in the rear. You can easily get by without adding the painted arches as the Spyders fit perfectly flush. I went with the painted / extended arches simply because I like the look. It adds a nice reflective body line (pic below) Took me about 2 to 2.5hrs and I wasn't rushing. The new arches also come with wider front wheel liners.
05-12-2023, 02:51 AM
Wheel Arc Extensions
