Schwalbe

My weekly ride on a bike path passes through areas with pieces of glass and other litter left by overnighters, thus the reason for buying the Air Plus Tube. Along with the Schwalbe Marathon Plus, this should provide the puncture protection I need. In the 800 miles of use since this purchase, I have yet to flat. The only downside is the additional heft. As for the claim of holding air longer, I find that it loses about 10 psi over 2 weeks. That is certainly better than my road bike with light weight tubes and tires,

The Marathon Plus is noticeably heavier than some other tires, likely due to its thicker tread and I'm hoping it will meet its claims for puncture protection. The local bike path frequently has small bits of glass that would work their way through the tread of my thinner, lighter original tires but so far, I haven't flatted in 800 miles with the Schwalbe. Goat Head season is just around the corner and if I make it through without a puncture, then the tires are well worth the cost.

I've read that some people had difficulty in mounting these, but I found it helpful to frequently pinch the sidewalls together on the opposite side of the tire levers so that the tire bead stays in the drop center. Otherwise, the stiff sidewalls tend to push the bead up onto rim shelf.

Rolling resistance is surprisingly low for a tire with this much rubber, as long as you keep its pressure in the recommended range.

My gravel bike came with 38mm tires, slick in the middle. Good for the road, commuting and light gravel, but I was nervous about using them on a long gravel ride which I do a couple of times a year. The big ride was coming up so I upgraded to the 45mm and mounted them tubeless. The middle is not slick but rolls well on pavement, which is what all my training was on. I just completed the 60-mile Loudon Gravel Grinder. Most of the roads are in pretty good shape but there are some pretty steep down and up hills. I felt confident going fast on the down hills - good control. They climbed well on the uphills. Slight slippage on super steep uphill when standing, but I also had the tires moderately firm to minimize overall ride rolling resistance.

So the description is accurate "Designed for 50% road, 50% off-road use" if you are looking for an all around tire.

I bought a pair of these to convert an old hard-tail MTB to gravel/rail trail use. For this application, the G-one Allround is an ideal tire - wide enough to work and look great in the MTB frame and terrific grip. I'm not racing these (they are for rides with my wife), but they seem pretty smooth and fast rolling to me. They compare favorably to the Maxxis Ramblers I have on my drop-bar gravel bike. Great tire, particularly if you want a wide size.