I NOTICED THAT NOT MANY THREADS HAVE BEEN POSTED LATELY SO I WAS LOOKING OVER THE ONES FROM THE PAST AND CAME ACROSS YOURS. LAST MONTH I BOUGHT A Z3 BUT HAVEN'T PUT IT ON THE ROAD SO, NOT USING THE CAR YET, I DON'T HAVE MUCH EXPERIENCE WITH IT YET. HOWEVER, I SEE THAT YOU MENTIONED THAT YOU DIDN'T KNOW HOW OLD YOUR SPARE TIRE WAS. I DO KNOW THAT IN THE U.S., TIRES, MOST OF THEM, HAVE ON THE SIDEWALL, A SMALL OVAL WITH 4 DIGITS OR NUMBERS INSIDE. THE FIRST 2 NUMBERS CORRESPOND TO THE WEEK OF THE YEAR AND THE LAST 2 NUMBERS CORRESPOND TO THE LAST 2 NUMBERS OF THE YEAR THAT THE TIRE WAS MANUFACTURED.. SO, FOR EXAMPLE, IF 4611 WAS IN THE OVAL, THIS TIRE WOULD HAVE BEEN MANUFACTURED DURING THE 46TH WEEK OF 2011. AGAIN, I'M NOT SURE IF THIS IS THE CASE IN THE UK. FRANKIE, EGG HARBOR TOWNSHIP, NEW JERSEY. I JUST READ AGAIN WHAT YOU SAID AND REALIZED YOU WERE TALKING ABOUT NO DATE ON THE SPACE SAVER TIRE. STUPID ME. YOU PROBABLY ALREADY KNOW WHAT I WAS TALKING ABOUT. IF I FIND OUT THE REAL ANSWER YOU NEED FOR THE AGE OF THE TIRE, I'LL GET BACK TO YOU. FRANKIE.