Leonvt Posted March 27, 2021 Report Share Posted March 27, 2021 Can any one tell me if 20" PORSCHE 911 991 C4S CARRERA CLASSICS will fit on 981 and what tyres would be required. Thanks in advance. Paul. Link to comment Share on other sites More sharing options...
Greenman Posted March 27, 2021 Report Share Posted March 27, 2021 I don’t know but these are the approved 20” fit for a Boxster: 20-inch wheel FA / RA or 8 J x20, RO 57 / 9.5 J x20, RO 45 8 J x20, RO 57 / 9.5 J x20, RO 45 8 J x20, RO 57 / 9.5 J x20, RO 45 20-inch wheel FA / RA 8.5 J x20, RO 57 / 10 J x20, RO 50 8.5 J x20, RO 57 / 10 J x20, RO 50 8.5 J x20, RO 57 / 10 J x20, RO 50 Summer tyres FA / RA 235/35 ZR 20 (88Y) / 265/35 ZR 20 (95Y) 235/35 ZR 20 (88Y) / 265/35 ZR 20 (95Y) 235/35 ZR 20 (88Y) / 265/35 ZR 20 (95Y) so basically anything up to 8.5” on the front and 10” on the back is guaranteed to fit.(with correct offsets) Link to comment Share on other sites More sharing options...
Leonvt Posted March 27, 2021 Author Report Share Posted March 27, 2021 Thanks for the information, the one that I was looking at are 11 rear, so would not be suitable. Link to comment Share on other sites More sharing options...
mneil Posted March 29, 2021 Report Share Posted March 29, 2021 On 3/27/2021 at 8:08 PM, Leonvt said: Thanks for the information, the one that I was looking at are 11 rear, so would not be suitable. It's the offset that is the critical measurement; clearing the springs and other suspension components. It can often be overcome using suitable sized spacers. There are web sites out there that can help😃 Link to comment Share on other sites More sharing options...
temporarychicken Posted March 29, 2021 Report Share Posted March 29, 2021 I have some 11J wheels on the rear with 55mm default offset. They fit without spacers but they are close to the rear chassis rails. Ideally I would suggest an offset of 50mm with no larger than 295 tyres. This will work nicely and tuck into the arch with no issues. This necessitates a 5mm hub-centric spacer in my above example. On the front, 9J with a total offset of 55 with 245 tyres will work best.any higher than 57 and you'll scratch the MacPherson strut. The key in both cases is not the exceed 245/295 tyres. These are a tiny stretch on 9J and 11J rims respectively, but this setup tucks well without rub on bounce, and is no more of a stretch than with the standard 'Sport Techno' wheels for example. Link to comment Share on other sites More sharing options...
alank Posted March 30, 2021 Report Share Posted March 30, 2021 I Have got Sport Techno II wheels, they seem to be 1/2 inch wider (11.5) than Classics, are you saying that they fit the same tyre as on the classics. Wondering if i could get away with 305's (no spacers fitted) Link to comment Share on other sites More sharing options...
Leonvt Posted March 30, 2021 Author Report Share Posted March 30, 2021 I am getting lost now!!! Link to comment Share on other sites More sharing options...
718as Posted March 30, 2021 Report Share Posted March 30, 2021 If you are referring to these then they will fit fine. www.ebay.co.uk/itm/GENUINE-SET-ALLOY-RIMS-20-PORSCHE-911-991-C4S-CARRERA-CLASSICS/203140957354?hash=item2f4c2504aa:g:RH8AAOSwXwRfiCIT Link to comment Share on other sites More sharing options...
Leonvt Posted March 31, 2021 Author Report Share Posted March 31, 2021 yes that the item i was looking at. it would seem that the 265 tyres on the rears would be a bit of a stretch on fitting. Link to comment Share on other sites More sharing options...
temporarychicken Posted April 1, 2021 Report Share Posted April 1, 2021 265 tyres on an 11J will be quite a severe stretch. You might even need to explode them onto the rim with lighter fluid. If you think this sounds nuts then google it, it exists..! I would strongly suggest using 295/30R20 on 11J rears. This is, after all, what Porsche themselves fitted to the 981 Spyder variant. Link to comment Share on other sites More sharing options...
Leonvt Posted April 1, 2021 Author Report Share Posted April 1, 2021 sorry to drag this out a bit but what about 245/40/19 and 275/40/19 on 19 inch alloys with 8J front and 9.5J rears, is this a recommended fitment ? Reason being there seems to be a better choice of 19s out there. Link to comment Share on other sites More sharing options...
718as Posted April 1, 2021 Report Share Posted April 1, 2021 I'm running 275s on 11's but will go up to 285's soon. They look fantastic. Link to comment Share on other sites More sharing options...
Leonvt Posted April 1, 2021 Author Report Share Posted April 1, 2021 What size of rim are you running? Link to comment Share on other sites More sharing options...
mneil Posted April 1, 2021 Report Share Posted April 1, 2021 My 981s, I'm running 275s ps4s rears on 20" carrera classics; fill the arches better😃. Always a bonus, they're cheaper😂. Link to comment Share on other sites More sharing options...
718as Posted April 2, 2021 Report Share Posted April 2, 2021 13 hours ago, Leonvt said: What size of rim are you running? 20x11 and 20x8.5 Link to comment Share on other sites More sharing options...
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