These tyres are not as comfortable as my set of winter tyres (Dunlop Winter Sport 5), nor my previous set of summer tyres (Michelin Primacy 4). Mainly due to the stiff sidewall I suspect, but the 94 XL load index probably doesn't help either, which makes them a bit harsh. Other than that they are great tyres. Great handling in dry and wet, good steering response, noise is not an issue and a lot of fun to drive. And remarkably wear resistant: after 25000 miles of mostly commuting (easy on the gas and brake pedal but cornering quite hard) the tyres still have in between 2.8 and 3.5mm of tread left.
Rolling resistance is supposedly quite high, higher than my Dunlop tyres. But to be honest I don't notice that much of a difference. In fact, the outside temperature has a larger impact on my fuel economy than switching from summer tyres to winter tyres. Now that the temperatures are dropping (which increases air resistance) I already see an increase in fuel consumption: around 6.0 L/100km in the summer and 6.5 L/100km in the winter.
Would I buy the Bridgestone Potenza Sport again? Probably not. Not because it's not a good tyre - it is. But simply because there are better alternatives available now. Like the new Potenza Sport Evo or the Goodyear Eagle F1 Asymmetric 6, to name the most likely contenders in my tyre size.

