napp Posted March 7, 2020 Share Posted March 7, 2020 just managed to pick up a set of 18s for my Z , the rears are 9.5j ET 22 I have 25mm spacers on the rear with 8.5 . looking to get some new tyres fitted , I will go 40s not 45s as I have 245 x 40 x 18 on the front. I am looking for a set up to fill the arch . what tyre size will I need , with or with out spacers . if you have a set up like this please could you put up a photo. thanks. Quote Link to comment Share on other sites More sharing options...
Ben–350Z Posted March 9, 2020 Share Posted March 9, 2020 I'd probably go 265x40 with those... Used to have 275x40's on my 10J rears. As for spacers, try it, see what it looks like then decide. Mine were ET12, and poked out a little, so I'd _guess_ that at ET22, you'll be about 5mm inside the arch. Quote Link to comment Share on other sites More sharing options...
Silverthorn Posted March 9, 2020 Share Posted March 9, 2020 (edited) A 245/40 up front with a 275/35 rear will give equal sized sidewalls so might not be a bad idea imo. I assume, based on the 245/40's, that the fronts are 8.5J? Edited March 9, 2020 by Silverthorn Quote Link to comment Share on other sites More sharing options...
napp Posted March 9, 2020 Author Share Posted March 9, 2020 yes mate 8.5j up front with 245 x 40 x 18 .so you would go with 275 x 35 ? I have 245 x 40 on the rear but there is quite a gap between the top of the wheel and the arch , will this fill it ? Quote Link to comment Share on other sites More sharing options...
napp Posted March 9, 2020 Author Share Posted March 9, 2020 you can tell side on, the front is spot on with 20mm spacers ,I do have 25mm on the rear Quote Link to comment Share on other sites More sharing options...
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