I need some more aggressive tyres for my R80 G/S. I'm leaning towards TKC 80's. I'm confused as they are listed in metric and imperial type sizes and I've seen bikes fitted with both. What's fundamental differences? By the way I was going for 90/90x21 front and 120/90 x18 rears but also available in 300x21 and 4.10x 18 . Opinions please.
Paul
Paul