They roll as you expect for the tread pattern. Hook up well in loose, chunky,rocky, and soft stuff. Did great on a long single track climb with mostly decomposed granite. No washing out front or rear. A little noisy and slower rolling on tarmac than other tires with shallower or closer set lugs. Definitely overkill if 30% or more of your riding is pavement or if the gravel is predictable. Both tires weight out the about 620g but it is a pretty robust tire for the intended use.
They roll as you expect for the tread pattern. Hook up well in loose, chunky,rocky, and soft stuff. Did great on a long single track climb with mostly decomposed granite. No washing out front or rear. A little noisy and slower rolling on tarmac than other tires with shallower or closer set lugs. Definitely overkill if 30% or more of your riding is pavement or if the gravel is predictable. Both tires weight out the about 620g but it is a pretty robust tire for the intended use.
If you read my review of the 1st Gen, G-One RS 40's then everything I said there applies here, but the 45 just adds more comfort, more capability on rougher terrain and even more smooth suppleness overall. The 45's weigh 552 and 550 and settled in at 46.1mm F and 46.4mm R inflated to 29 PSI F and 31 PSI R after a ride on Enve 4.5 SES, 25mm internal rims. Although they are heavy, you don't feel the weight so don't be put off by that, the savings in rolling resistance will far outweigh any weight penalty. The setup was a breeze and the tires are holding air well. These tires roll fast, corner well and have excellent grip. The 45's just amplify what the 40's offer, but will undoubtedly be faster than the 40 on rough surfaces.
I have tried several different brands of TPU tubes and I prefer the Schwalbe Aerothan. My perception is that TPU tubes in general provide a lower rolling resistance and are much lighter weight than standard tubes. I have a little more than 1,000 miles on the Aerothan tubes and have only flatted once. The time I did flat, no other tube would have done any better. Flat resistance seems to be the same, maybe better than a standard tube. The Aerothan tubes have a good quality valve and the valve stem is well reinforced in its connection to the tube in comparison to some others. The Aerothans hold pressure about as well as a typical tube. So it comes down to price, which is a lot. If you want a slightly faster wheel and are willing to pay for it, here you go.
