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Old 02-15-2024, 06:49 PM   #5
Pashets
Registered User
 
Join Date: Feb 2024
Location: California, USA
Posts: 2
Hi All,
I’m new here, bought my 2001 Boxster S a couple months back and been thinking about upgrading its stock 17 inch wheels since then.
I came across used 981 18-inch ones a few days ago that come with good tires too, but even after checking the fitment in the tool linked here and on another site, I honestly still can’t understand if the new setup is going to work, and what I might still be missing, so would really appreciate input from experts.

Current setup 17”
Front: 7 ET 55; 205x50
Rear: 8.5 ET 50; 255x40

New setup I’m looking to buy 18”
Front: 8 ET 57; 245x40
Rear: 9 ET 47; 275x40

From what I understand, I’ll need 15mm spacers in the front. Is that correct?
Not sure about rear. Anything I should be worrying about in terms of the tires size?
Thank you all so much!
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