right i'm ordering some tyres but wtf does it all mean.....i know the speed ratings (but that means at a constant speed) and extra load..???? but whats the best to get out of these (same tyre different prices)......
215/40/R17 Z XL.......???????
215/40/17 87Y......??????
215/40/ZR17 87Y XL with rim protector.....?????
does any of it really matter...cheers Pete