I have been riding Continental tires for over 15 years - GP 4000, 4 Season and Gatorskin - I love the ride characteristics and flat resistance and durability. The 4 Seasons has become my year round road bike tire and the Gatorskin(32) is my winter street ridingcommuting tire on gravel bike. I would recommend Continental tires to any and all asking about tire recommendations.
I run 28s on both my winter training gravel bike (CX) as well as a tandem. I've ridden on all kinds of gravel roads and even on a few MTB trails with them. On the tandem we've recorded descending speeds of over 60mph and find them totally trustworthy. Logically, they are slightly heavy, but otherwise great handling, super durable, and hard wearing. My go-to tire.
I ride about 5000 miles a year on my road bike. I use a Conti Gatorskin on the rear and a Conti 4-Season on the front. On my last 4-Season I got 4000 miles with only one puncture which was a direct hit by a thorn I like having the 4-Season on the front because it is responsive and smooth-riding. I've tried tires from other manufacturers on the front that were also responsive and smooth-riding but not very durable-multiple punctures and low mileage. I'm sticking with the Conti 4-Season
The Grand Prix 4-Season offers me plenty of options. Great for the road and for a bit of off-roading as well. It might require more watts to push it but look at it this way, you're getting more of workout! The grip has been great including on wet patches. It does have better puncture resistance but you will find something that can cause you to have a flat, I certainly have. At the same time I have rolled through plenty of stuff that would have flatted lesser tires. This is now my preferred tire and I love the size options as I use a 32mm.
These tires are nearly as tough as gatorskins but lighter and with better road feel. I get maybe 1-3 flats a year that are virtually inevitable no matter the tire. Cornering is confident and performance in wet conditions is also very reasonable (I've been on several other tires that are most definitely worse).
Putting these tires on my crossgravel bike made a big difference in road performance. They are ok on gravel but lose traction on steep climbs. I plan on lowering pressure and trying again, however you obviously lose performance on the tarmac in doing so.
I use these tires exclusively. I never have had a flat, and that means a lot to me. I'd much rather take a slight penalty on weight and go for a 60 mile ride knowing my chances of flatting are next to nil.
Ride about 2,000 miles per year and have used the GP 4-season for 15 years or so. I have had very few flats, probably less than one per year on average. Great traction and handling. Hard to beat this tire at the sale price.
I use the Grand Prix 4-Season on both my road racing bike and my commute bike, it handles well, and offers more puncture protection than a race tire. These are great tires, rain or shine, which is especially good for those long winter months (here in Portland, OR, anyway). If you find yourself faced with snow in winter, a studded winter tire is more up your alley.
Bottom line, this tire handles nearly as well in rain as it does on dry ground. It's a great purchase for anyone who rides in all conditions, and wants a durable tire that feels good.
Like many other reviewers I am a big fan of these tires. The only improvement I'd like Conti to make is to go one size wider. If I could I'd ride a 28 on the front and one size wider in the rear during the winter months when I'm commuting in the dark.
I have not yet laced-up these these Conti 4-Seasons to my Vuelta wheel set, yet. I am waiting for my current pair of Conti 25mm Gatorskin foldables to give their last, before I swap them out. This will be the third set of Continental Brand tires I have ridden on my 30 mile daily commute on the current bike, and all without a single flat (knocking on the wooden desk now). I have tried three other brands of tire with much less success (Maxxis, Ribmo, and Vittorias) and they all ended badly, with either continuous flats or complete tire blow-outs. Highly regard the Conti's. Last set wore off all the rubber tread surface, down to the woven inner liner in a couple spots, before I decided to retire them and I never had a singe issue up to that point. High hopes for this set, once the current pair have done their job. Reliable and speedy choice.
Rode the 4-Seasons down the length of the Cascade Mountain Range from Hope BC to Sacramento CA with zero flats. Traction is amazing on both wet and dry roads. Perhaps best of all they give a very smooth ride, adsorbing road vibrations, a really big deal when riding six to eight hours a day, weeks on end. 5-stars in my book. Oh, I also commute on 4-Seasons here in rainy Portland.