5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHWorking Out Offsets Help
Leading reported evidence
Run spacers
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
Q1: How do I convert that into a offset for new wheels given I can specify so I don't need to run spacers?
Leading evidence: 'Run spacers' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run spacers' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
I currently run the standard wheel (albeit turbo) with Cup2's on 7mm spacers front and 15mm spacers rear which is just right.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T003124Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Am very much thinking about getting some BBS E88's for the 6.C4S and I could do with the collective brain on sizes etc.
I currently run the standard wheel (albeit turbo) with Cup2's on 7mm spacers front and 15mm spacers rear which is just right. I shall probably change to 4S's on these if I can find the right sizes.
Q1: How do I convert that into a offset for new wheels given I can specify so I don't need to run spacers?
Q2: Is there any merit in going smaller or wider at either end and if so is their any good/favourite alternatives out there? It is pretty over tyre'd for the power so I don't want to run any more rubber at the rear, arguably front could do a size larger etc
Can't get gold E88's out of my head. Such lovely looking wheels but I don't want to spend all the money and get the wrong size!
Standard wide body wheels are as follows
Front : 18x8 et50
Rear: 18x11 et63
The equivalent with your spacers are front et43, rear et48.
My 996.1 C2 had 235s on the front when I got it (which is standard on wide body), I changed for the correct 225 and can see why the previous owner made the change, but it isn't much different really. I'd suggest sticking to standard sizes.
The wheel offset eg ET63 is the amount in mm by which the mounting face of the wheel is offset outwards from the centre line of the wheel (ie how much the centre line is displaced inwards towards the car). The spacer effectively moves the mounting face inwards towards the centre line of the wheel ie it pushes the wheel outwards from the hub. So to recalculate the effective offset with the spacers fitted you subtract the spacer thickness from the wheel ET. In your case if the original is ET63 then the effective new rear offset is ET(63-15) = ET48.
You need to be sure what your current ET is before specifying new wheels.
This is a source reference. Confirm exact model applicability in the original material.
