Jinx Posted September 12, 2013 Share Posted September 12, 2013 Hello to everyone and my first real post. Had my Z now for only a few months and replaced the two rear tyres ( like for like) the first week I had her, as one was very worn. Just checking the fronts recently and noticed a size difference to the rears. I would like to get them changed to match the rears profile. I know that some cars do eg Mercedes have a slightly larger tyres on the front. Is there a reason or just not been matched up properly. Is it ok to get them swopped to the same lower profile as the rears. Tyres Front 255/35r 20 97w xl Admiral Rear 285/30zr 20 Nankang Quote Link to comment Share on other sites More sharing options...
Ekona Posted September 12, 2013 Share Posted September 12, 2013 The Zed runs staggered sizes front to back to maintain a neutral balance between over and understeer. Profile is the % of the width, so not unusual to have different sizes. I have no idea what size tyres you need to run on 20" wheels, but those tyres you have on there are bloody awful! Have a read of this and make your own mind up though as to whether mixed tyres are a good idea or not. I'm sure someone else will be along to advise of the correct sizes on 20" wheels, the miata.net calculator appears to be down for me. 1 Quote Link to comment Share on other sites More sharing options...
Jinx Posted September 12, 2013 Author Share Posted September 12, 2013 Thanks Exona. There what came on her so just using for now WIP. The wheels are pretty banged up them selves and need a dammed good refurb or scrapping. But tempted to go to 19" just worried about the different sizes. Quote Link to comment Share on other sites More sharing options...
KyleR Posted September 12, 2013 Share Posted September 12, 2013 Front tyres for 20's should be 255/30/20 Your rear tires are the correct size, but bloody awful 1 Quote Link to comment Share on other sites More sharing options...
Jinx Posted September 12, 2013 Author Share Posted September 12, 2013 Cheers, humm so I'm getting the feeling my tyres are poo ??? Lol thanks for the size info though. My anal retention was getting the better of me. Quote Link to comment Share on other sites More sharing options...
Flex Posted September 12, 2013 Share Posted September 12, 2013 Thanks Exona. Quote Link to comment Share on other sites More sharing options...
maddog1982 Posted September 12, 2013 Share Posted September 12, 2013 MPSS job done, car is transformed. Quote Link to comment Share on other sites More sharing options...
Jinx Posted October 20, 2013 Author Share Posted October 20, 2013 Front tyres changed to match the rear lower profile. Deaded Nankangs on all four corners but still alive. JUST!!!!!! :-) Quote Link to comment Share on other sites More sharing options...
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