I am confussed about tyre sizes, what is the diff between 1.5 & 1.9
I have a mountain bike but I am riding more on roads and Toe paths these days so i want to change my tyres to slicks. I want a tyre that will go faster on roads but have some grip on Toe paths. My wheels are 26 x 1.5 and my current MTB tyres are 26.*1.9 . Will this tyre in size 26 * 1.5 fit my wheel or do i need the 26* 1.9, also which size is faster on the road. I have also looked at the Schwalbe City Jet MTB Tyre but this is only available in size 26*1.5, will this fit my wheel and would it have enough grip on a wet Toe path ?