Hi Beltar, I thought that Porsche didn't have 10 mm spacers, so they told me !! You can have 5 mm spacers and than it goes directly to 15 or even 17 mm spacers
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I would love to place 5 mm spacers on the front axle and 10 mm on the rear. Impossible, so they told me, 5 mm all the way because they don't have 10 mm and 15 mm is way too much (that I can believe).