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ROD ARNOLD
01-03-2011, 01:23 PM
my car has UNFORUNATELY been fitted with 17 wheels and rubber bands !!!,now can anyone tell me how far out the speedo is ???? (slow)??

Adam
01-03-2011, 01:27 PM
Handy site for you here....

http://www.miata.net/garage/tirecalc.html

So you can enter the original specs: 205/45/16
Then just enter the new tyre/wheel specs: ???/??/17

ROD ARNOLD
01-03-2011, 01:44 PM
hi THANKS will do,need to get the originals when i can , what a brill site,looks like about 2 mph slow ,on17s

Fast Alan
01-03-2011, 01:55 PM
get yourself a sat nav or borrow one which will tell you your speed on the screen and compare it to your speedo,there all slightly low probably for saftey reasons on mine at 70 on the speedo I will be doing around 66-67

ROD ARNOLD
01-03-2011, 02:01 PM
good thinking iv got tom tom ..never gave it a thaught to use that ,its grey hair syindrome