My history for rear flats is appalling. This is my latest attempt at mitigation..
It has turned out quite well. 2100 miles w no rear flats. This is very good for me and includes removing a staple from the rear tread after one ride wo a problem.
On the downside I blew out a front at 500 miles w a sidewall cut.
Now riding w Michelin Power Protection on the front (always been good on the front) and Conti 4-Season on the rear and having very good results. I do 100 mile rides (3 last week) so tire reliability is a big deal for me.
It's not scientific, but I haven't ever had better results.
Continental has always made great tires for tandems. The only problem I noted in the past has been with the brown colored side walls on some tire. It seems that UV light would break down the sidewall fibers causing them to break prematurely. These Continental Grand Prix 4-Season Special Edition Black has eliminated this problem by covering the side walls with a black rubber coating. I also find that when using the 28 and 32mm tires on regular width rims allows for a round tread profile. This offers good straight line and cornering stability.
I bought these on sale and put both on my road bike. In almost 5,000 miles I only got 2 or 3 flats Before the rear needed replacing. The front lasted a bit longer, but soon needed replacing, too. Definitely great flat protection and long wear-especially for the sale price.
I've used Continental 4 Seasons for several years on my road bike (Lynskey R360). I have rarely had a flat. Are they the lowest rolling resistance tires out there, no they are not but they are stable and will take a lot of abuse. I like the black edition because it looks good on my titanium frame.
I have been road biking for many years, completing many centuries. I get more miles out of this tire than any other I have tried. I have less flats, too. The grip is good on wet pavement and cornering is excellent. Great traction. I use the 25's.
These tires are great for training. They wear very well and handle in good and bad weather. I usually get 3 years out of a set of Continental tires. I average 12 thousand miles a year. I'm a light rider weighing between 128 and 130 lbs. The last set I went 3 years without a single flat. A lot of the roads in southwestern Ohio and Indiana are not the greatest either.
I highly recommend these tires.
I have a set of these on my Lynskey Helix, on which I've been doing an 11-mile urban commute. I have a 28 on the back, 25 on the front. So far, these have been great. They're showing minimal wear, I've had zero flats, they seem to hold pressure pretty well. They feel fine to ride on - it's true what they say about wider tires giving a smoother ride and not adding to the overall effort. They were easy to put on. Feels like I have good feel, good control, tight in the turns. Two thumbs up.
When I got my new Trek Domane, it came with 32s which I just wasn't ready to go to. I had always run Continental GP 4000S IIs - 23s or 25s, and I saw they made 28s in that tire also, so I got those. I loved the softness of the wider tire and lower air pressure, but I got 4 flats within 200 miles. All goatheads. I lost confidence in the ability of those tires to fend off a couple teeny tiny goatheads, so I went with these 4 Seasons. So far, 300 more miles on the same roads, zero flats. They are a hair stiffer, but I'll take the stronger durability. The black edition was a little splurge but does look better with my partly black bike.
These tires deliver the best compromise between ride quality, grip, and durability. They don't excel at any one of those aspects and that's likely the objective. Heightening one seems to take away from the other. These are good for everyday commuting or training but they definitely don't roll and ride as well as others targeted for speed or ride quality. For the money, they can't be beat. They'll survive a century ride over rural roads and last a long time. I just wish these delivered a better ride but that would mean the sidewall losing strength and puncture protection being compromised. I am going to try the 5000s and compare. Given I just used the Vittoria Corsas (zero durability but buttery smooth), that's likely the next tire I'll try to get a better ride.
these four-season tires are great for winter riding and last longer than I expected. I also use them on the trainer and compared to the wear on other tires, these last significantly longer. I don't like the cost of Continentals in general, but Bike Tires Direct helps make them affordable for the average Joe Cyclist. Thanks!
These tires will obviously not be as light as the GP4000's or GP5000's that I put on my road bikes but on my commuter bike they are perfect. They provide a really nice ride. If you get caught in wet weather they channel water away from the bike very effectively. A really solid tire. Get them on sale and they would be hard to beat.
The 32 or 28 size is the tires to use on a tandem bicycle. The ride is good and wet traction...with a reduction in tire pressure...instills confidence. Especially like the black side wall. Punctures are a thing of the past.
I've ridden several tire brands for the last 26 years - Continental has always been durable but not necessarily long-lasting in my experience (in the competitive-race category tires).
It was a pleasant surprise to realize I rode almost 3000 miles on this rear tire (granted, it was off-season), 2000-2500 is more the norm for my usual go-to brand. So if there's something new with the Grand Prix 4 to make it tougher than before, then I can vouch it's true!
Recently installed these and with over 100 miles I am extremely willing to say that these roll smooth,they are light, I can run high psi and quiet to boot! If looking for a tyre I highly recommend these.