GrahamHill56 Posted November 7, 2019 Share Posted November 7, 2019 Well I've been a Cayman owner (and 1st time Porsche owner) for about a month now & I'm confused/receiving conflicting information. The hand book & info in the car gives 2 options for 20 Summer Tyres Normal 2.3 bar front & rear Comfort 2.1 bar front & rear For the first month I used 2.3 (using a traditional tyre pressure gauge) At the weekend I've dropped it to 2.1 all round to see if it is a little more comfortable. The display on the dash seemed to agree showing 2.2 all round. Today I have had a warning pop up saying that the rears are 0.3 bar below what they should be, but the display on the dash is still showing 2.2 & 2.1 per my tyre gauge! So I called in at our local Porsche Centre @ Tewkesbury & the service guy told me "ignore the manual" "because the rears are larger than the front, then the rears should be a little higher" NB He couldn't/wouldn't tell me what pressure to use! "the display to rely on is the one saying how much air to add or take out" I'm inclined to ignore the dash display & just rely on my tyre gauge & just use the dash display as a guide. Leaves me somewhat unimpressed by Porsche service. Thanks for any input Graham Link to comment Share on other sites More sharing options...
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