>>1113172Yes
The front needs to have a lot of "grab" i.e. it needs to grip onto things without deflecting off them or sliding, as this would push you off line and cause you to crash if it was bad enough. It also should be more stable (i.e. have a stiffer casing) as your weight will be pushing down on it when your leaned over cornering.
Grip isn't quite as important on the rear (it's still important) as it's getting pulled along by the front, and also because the rear can slide with much less consequence. In fact many people like a rear that slides a bit as long as it does so in a predictable manner. It's also more likely to pick up punctures so many people choose a rear with a tougher casing (note that tough is not always the same as stiff).
Of course this is all totally dependent on the conditions you ride in and how you want to ride. There isn't necessarily anything wrong with having the same tire f+r. I originally had two Baron Projekts, then I switched to two Squales, and now I've been running the Braon front and the Squale rear for about 6 months and I'm pretty happy with it. The Baron wasn't smooth/predictable enough on the rear and the Squale wasn't grabby enough on the front. The Squale is also faster rolling however being a 1kg+ tire it's still not terribly quick.
