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Anyone attempt 275's in front / 305's in rear for Coupe?

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Old Jan 11, 2017 | 07:08 PM
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2017 Porsche 911 C4
Anyone attempt 275's in front / 305's in rear for Coupe?

I still have plenty of rubber on my PSS's, but I'm curious if anyone has considered (or done) 275/35/19 in the front and 305/30/20 on the OEM 19x9f and 20x10.5r cross-spokes?

It would keep the same staggered ratio as stock, and I know technically the rubber will fit on the rims (pushing it though it seems), but has anyone encountered rubbing issues at stock height or lowered?

I'd love to get some beefy 305's in the back, but not sure if those fronts can handle 275's without rubbing.
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Old Jan 11, 2017 | 08:03 PM
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I think it will work... if you are not lowered.
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Old Feb 7, 2025 | 01:37 AM
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Anymore to this? I'd like to know if 275 front, 295/305 rear is possible on custom rim as well
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Old Feb 7, 2025 | 01:55 AM
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Originally Posted by Joey911
Anymore to this? I'd like to know if 275 front, 295/305 rear is possible on custom rim as well
Coupe easily fits 275 fronts and 305 rears. Currently settled on 265 fronts and 295 rear Cup 2's. Dunno anything about your "custom" rims but yeah on stock ones no worries
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Old Feb 7, 2025 | 11:15 AM
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I'm running 305 rears no problem, didn't touch the fronts yet as they had plenty of life still, but may go up when it's time.
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Old Feb 8, 2025 | 11:28 AM
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Yes it’s possible, no rubbing issues at all. I’m running 305 rears and 275 fronts. See my thread here.
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Old Feb 9, 2025 | 01:40 PM
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Works with no issues. I've been running that setup on my car for years now.
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Old Mar 2, 2025 | 09:20 PM
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AMG C63s
295 /30/20 fronts
315/30/20 rear

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Old Mar 3, 2025 | 09:51 AM
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Originally Posted by Struth
295 /30/20 fronts
315/30/20 rear
That’s a pretty aggressive setup. Can you post some more close up pics? I’m assuming you’re on aftermarket rims? 275F / 305R is pretty much pushing the limits on stock rims.
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