Continental Grand Prix 4 Season Tyre

So I bought a Cyclocross bike so I could ride into work. I did this because its 10 miles in one direction and one of my options was to ride on a light gravel trail which I did not think a standard road bike would be able to handle.That said, it wasn't comfortable to ride on the fat knobby tires on the road which was what I ride on the majority of the time. So I decided that I wanted to get the best, fattest road tire I could find so that I would be comfortable on the road but still be able to take it on the trail when I wanted to. These tires are the ones that seem to fit the bill.They are fast on the road and able to take the trail when I go on it. The difference in overall comfort has been fantastic and I love the fact that I'm able to keep up with all my friends on their road bikes when we go for weekend rides.

I replaced some pretty good 700x28 tires on my Bianchi touring bike before going on the 2011 Cycle Oregon tour and was very pleased with the result. After more than 600 miles of prep and touring, the front tire still has traces of the little left-over ridge from manufacturing. When it first began peeling off on day 2 of the tour and slapping against my fork, I thought I had a mechanical problem until I located the source of the noise. The rear tire has lost all traces of that seam material but seems little worn. And I had no trouble in a couple of sections of gravel or going over road and bridge seams and railroad tracks. No sense of squirreliness on downhills. And I worried very little about glass and gravel on the roads.Most important, my speed increased more than a mile per hour on my training rides with these tires.

Would have given 5-stars, but they don't seem as 'flat-resistant' as advertised. My old Vittoria Zaffiro-Pro's had fewer flats.But the 4-Season's roll way-faster than the Zaffiro's AND a pair of 25mm Rubino's that I got from a friend.I have the 28's and they are significantly skinnier than my old, worn-out 28mm Zaffiro's. I've read that they actually measure closer to 26mm, and I believe it!All-in-all, great tires!

Perfect winter tire. Absolutely great for gravel. Hundreds of miles on these tires on gravel and some of the worst paved roads in the South Central U.S. and not a single flat. They're more supple than Gatorskins and seem at least as tough. Experiment with air pressure to get the right feel. I weigh about 150 pounds. I run these 28 mm tires at 75 psi, and they are absolutely cushy on even the worst roads. And I have never gotten a pinch flat, even when hitting sharp concrete bridge decking and some really bad pot holes. I usually get flats when riding in the rain because so much trash gets washed onto the edge of the pavement, but I've ridden in the rain several times on these with no flats. And they stick to the pavement like glue, even in sharp curves.

Following way too much research to get new bicycle tires, I purchased a set of these. I guess the "all season" part is the thin, weird tread on the edges of the tires. According to the instruction sheet, the treads have an orientation for mounting, but it doesn't say what it is, as in "mount the tires with the tread direction as shown on the tire." Ain't no stinkin' direction shown on the tire.Not one to just throw something on my bike, I sent a message to Continental Tire. A few months later, I received a message from Germany, advising me to mount the tire as shown in their website picture, with an added note about the direction of rotation.Bottom line: Subtract the "all season" thin grid marks and you have what is basically a "slick" tire.

Had these for about six weeks and rode them for 150-200 miles before running over something so small that I didn't even know it until the tire split and went flat in less than 3 seconds. After trying to repair the flat with a new inner tube, it popped again before I could even get on the saddle. The tire is basically garbage at this point. I really had high hopes for these tires after reading all the positive reviews. I'm going to call continental customer service about a warranty and will write an update with their response...

PROS:* Kevlar sidewalls* Vectran center-tread layers* Grippy* Fairly lightCONS:* Expensive* Do not last as long as Gators.I had a 1cm flat band at 1500 miles. At this point, I picked up glass, which worked its way into a small pocket, through the casing, and started killing tubes.My Gators lasted about twice as long, and have not picked up any glass. The center rubber is a little harder. I keep them on my spare wheels.Now, before you say this is low mileage for a tire, understand my ride wright (bike+kit+body) is 300 pounds. I run 28C in the back, 25C in the front, at around 110-120psi

I submit reviews on about 50% of the things I buy on Amazon, mostly to rave about items I think are worth raving about. That's not the case with this tire.After only a couple hundred miles on it, I noticed some ominous gashes in the tread. It wasn't long after that I got a flat. When I found and removed the culprit -- a tiny shard of glass smaller than a grain of rice -- I couldn't help thinking this is the wimpiest road hazard to ever give me a flat.To make matters worse, I bought two of these tires and even though I don't trust it enough to install it, I'm stuck with it since the purchase date was back in September, 2014.