Hey guys, Just thought I'd start a thread on tyres and basics of it, as I have a question on my mind that seems silly that prolly everyone knows. This relates to sizing. As you know they usually have it numbered as 180/55/17" I know the first last one relates to sizing to fit your wheels. How does the first and the last numbers work? I mean, with my current rear tyres are like, 180/65/17" Would I be able to fit these tyres on what I've got? And how would it affect the bike? Just a quick Q on that. Thanks for any help guys.