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WHEELS SIZE QUESTION, HELP!!!

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YOUR RESEARCHWHEELS SIZE QUESTION, HELP!!!

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Recommend 15-20mm spacer

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Suggestion

Rears: Inner clearance 15mm less and wheel will sit in arch by another 15mm so I would recommend a 15-20mm spacer.

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WHEELS SIZE QUESTION, HELP!!!
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Leading evidence: 'Recommend 15-20mm spacer' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Recommend 15-20mm spacer' (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.

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Run 18" wheels

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Suggestion · Original poster

hello guys, now my 2002 c4s is running 18" wheels with front 8" with 50 offset , the rear 11" with 45 offset.

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WHEELS SIZE QUESTION, HELP!!!
Frequently discussed actions (2)

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Recommend 15-20mm spacer

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Suggestion

Rears: Inner clearance 15mm less and wheel will sit in arch by another 15mm so I would recommend a 15-20mm spacer.

Original post Read captured discussion
WHEELS SIZE QUESTION, HELP!!!

Run 18" wheels

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Suggestion · Original poster

hello guys, now my 2002 c4s is running 18" wheels with front 8" with 50 offset , the rear 11" with 45 offset.

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WHEELS SIZE QUESTION, HELP!!!
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POST 1 / ORIGINAL POSTEROriginal post

hello guys, now my 2002 c4s is running 18" wheels with front 8" with 50 offset , the rear 11" with 45 offset. so my question is, are those wheels--- 8.5 x 18 ET 41mm 11 x 18 ET 60mm fit my car well or need spacers? or do not fit at all? thanks in advance. kent

POST 2Original post

Fronts: Inner clearance will be 3mm more but wheel will extend by 15mm more. See how you think this will look - should be OK Rears: Inner clearance 15mm less and wheel will sit in arch by another 15mm so I would recommend a 15-20mm spacer. If you puit a wider tyre on the front (235 say) remember to take the rolling radius into account for the 4WD with a matched rear (315) Hope this helps.

POST 3Original post

The front will be perfect and look fantastic in my opinion as they are only 1mm off the 8.5et40 of the GT3 wheel specs. The rears will definitely need as spacer as you have a wide body car where the optimal offset is in the high 30's to low 40's range. Porsche makes a 17mm spacer for the wide body cars for this very application. For example, the rear wheel on my Turbo is 11et63 so the 17mm spacer moves it out perfectly.

POST 4 / ORIGINAL POSTEROriginal post

thanks 4C4GTS and Dell for the wheel offset 101, got it and now i know how to calculate the offset.coolll

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