971 - Wheel size limits - offset
Hi All.
Ive checked my original wheel sizes and believe this to be correct.
Porsche Part No.: 971601025D 971601025K
Front: 9.5Jx 21 inch ET71
Rear: 11.5Jx 21 inch ET69
Im using https://www.willtheyfit.com to make sure fitment is ok for a replacement set of wheels.
Whats the furthest people have gone with the offset before fouling the arch.
Cheers
Ive checked my original wheel sizes and believe this to be correct.
Porsche Part No.: 971601025D 971601025K
Front: 9.5Jx 21 inch ET71
Rear: 11.5Jx 21 inch ET69
Im using https://www.willtheyfit.com to make sure fitment is ok for a replacement set of wheels.
Whats the furthest people have gone with the offset before fouling the arch.
Cheers
Cheaper, by far, than changing wheel offsets would be to simply install a set of shims! You could keep your wheels and just add
the shims. Check your current clearance between the tire and fenders at anticipated suspension compression.
...and, remember, increasing the offset moves the center closer to the brake caliper! In my Panamera Turbo, there's very little clearance
between the front wheels and those massive calipers!
Good luck!
the shims. Check your current clearance between the tire and fenders at anticipated suspension compression.
...and, remember, increasing the offset moves the center closer to the brake caliper! In my Panamera Turbo, there's very little clearance
between the front wheels and those massive calipers!
Good luck!
Cheaper, by far, than changing wheel offsets would be to simply install a set of shims! You could keep your wheels and just add
the shims. Check your current clearance between the tire and fenders at anticipated suspension compression.
...and, remember, increasing the offset moves the center closer to the brake caliper! In my Panamera Turbo, there's very little clearance
between the front wheels and those massive calipers!
Good luck!
the shims. Check your current clearance between the tire and fenders at anticipated suspension compression.
...and, remember, increasing the offset moves the center closer to the brake caliper! In my Panamera Turbo, there's very little clearance
between the front wheels and those massive calipers!
Good luck!
I don’t want to come too far out as I presume there’s a risk of the tyre hitting the arch
I made the mistake of purchasing some gts wheels after checking the offsets.
they are 21”Width: 9.5J 11J
Offset: et46 et58
The rears are fine but the fronts protrude 25mm which doesn’t make much sense as the stock ET was 71. Yeah they’re wrong but not by that magnitude.
so I don’t have much confidence to sort without some guidance.
55 front and back seems to be common.
what are your wheels out of in@FoothillPan
they are 21”Width: 9.5J 11J
Offset: et46 et58
The rears are fine but the fronts protrude 25mm which doesn’t make much sense as the stock ET was 71. Yeah they’re wrong but not by that magnitude.
so I don’t have much confidence to sort without some guidance.
55 front and back seems to be common.
what are your wheels out of in@FoothillPan
Last edited by Bigjeffuk; Oct 22, 2025 at 03:45 AM.


