Joined: Aug 2014
Posts: 1,152
Likes: 439
From: UK
Bikes: customized Dahon Helios 1x10, customized Dahon Smooth Hound 1x11, customized Dahon Hammerhead 8.0 d7, Kinesis GX Race 50(mullet setup 1x11), Forme Calver 37 (1x11), Planet X Giovanissimi 20 (1x9), Orange Zest 20 (1x9)
Unless you are racing hill climb, there is no advantage to run the 1.75 on the back. you would be better fitting you old 1.5 on the back and finish it out and run the 1.75 at the front, the new rubber with the added volume/lower pressure and extra patch contact will give you better control and possibly more wrist comfort.
I run wider front on XC/gravel bikes or at least gripper (50 or 52 width) and of fast race, I run a thinner rear semi slick (47 witdh). On hill climb bike,I run 32 rear and 28 front (for weight reasons)
And if confort is important, conti urban contact is much smoother and faster than marathon.