sandrof1 Posted April 30, 2013 Share Posted April 30, 2013 Can't seem to find 18X9 or 18X10, only 18X9.5 and 18X10.5 on the RPF1's - is the 1/2" acceptable for Spec Z? - Never mind on this one, I went to PTS and they have them! From reading all the posts, I'm guessing the best offset is +15mm and 20mm spacers all around?? Thanks! Quote Link to comment Share on other sites More sharing options...
philstireservice Posted April 30, 2013 Share Posted April 30, 2013 Can't seem to find 18X9 or 18X10, only 18X9.5 and 18X10.5 on the RPF1's - is the 1/2" acceptable for Spec Z? - Never mind on this one, I went to PTS and they have them! From reading all the posts, I'm guessing the best offset is +15mm and 20mm spacers all around?? Thanks! You're not looking to hard......we have 18x9 and 18x10 RPF1's in stock. Quote Link to comment Share on other sites More sharing options...
laze1 Posted April 30, 2013 Share Posted April 30, 2013 BTW: Some folks are just buying 18x9 and running them on all 4 wheels...makes it easier to rotate/even out the wear... I don't believe that is much performance hit when doing this... Quote Link to comment Share on other sites More sharing options...
philstireservice Posted May 2, 2013 Share Posted May 2, 2013 A square setup isn't optimal for Spec Z. Running the 10" max on the rear rims will have an effect. It changes the shape of the contact patch of the 275/35-18 R1s and will offer an advantage in the Z's handling. What's the advantage for the larger rear contact patch? It seems most of us are battling excessive understeer ? . ? The wider tire on the rear will help the understeer problem. Quote Link to comment Share on other sites More sharing options...
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