@pigyn Done the Strava thing. I’ve a set of Plus wheels for my Solaris so rode the same loop up here in the Dales on 29er and 650b+ wheels. The loop was about 24Km long and a variety of surfaces from trail centre like path to grass fields. Everything else was as equal as I could make it: clothes; the amount of water in my Camelbak; equal effort and rest in the days beforehand. I also waited a month or so after getting the wheels so I didn’t get the new gear, halo effect. I knew the ride pretty well as we do those trails several times a year.
The result (from a single run on each): the Plus tyres were about 7% faster. I knew some segments would be as they were stony, slightly loose, steady climbs but was surprised that others were. Most segments I got PBs on with the rest being second fastest. Some of the time differences (both better and worse) were minimal and well within error margins but others like those I knew would be faster were quite significant, 2mins down to 1min40, that sort of improvement.
All of which was quite a surprise as the wheels and tyres (Alpkit Rumpus and WTB Bridger and Trailblazer) are 1.5Kg heavier than the 29er kit (Hope wheels with Bontrager XR4/3 tyres)
There’s one area where they really don’t shine: tarmac. Normally I have to coast or even brake to let my wife keep up, with the Plus tyres it was the other way round. This has a knock-on effect in that long distance rides like the various ITTs become quite hard work.
The Solaris now has rigid forks and having a Plus tyre on the front makes a big difference to the comfort though I’m getting more used to riding rigid so it’s not so much a benefit now.
My initial thoughts were that the Plus tyres turn a hooligan of a bike into Begbie!