Assuming you’re running tubes 60 psi is too soft, never done tubeless so can’t speak for that. I find Smart Sam’s better than Landcruisers. I run them as hard as they will go, 85psi from memory. Grails should be fine, mate rode on them last year.

I’ve done it three times. Whatever tyres I had. I did it on XGs one year but preferred the uncle johns I used last time (similar to small block 8s), Never brave enough to use a file tread but you probably could if it hasn’t been a very wet lead up – probably more ride-able rocky and tarmac sections than mud.

Think I’ve got velocity SL rims. Pumped up the tyres to about 70psi and was fine. Never saw the point of landcruisers as punctures are pinch flats which is more a factor of tyre pressure and not hitting big rocks/drainage bars. I tended to ride conservatively on the downs to save the bike and me from damage. Go hard on the walking sections, road and final climb.

First time for me last year and was using Kinesis Crosslight rims and Landcruisers at about 70 psi.

IMO it’s only PyG where you risk real damage/puncture, much of Inglebrough is boggy/grassy decent, as is Whernside if you pick the right route 😉

However I wasn’t impressed by how much my bike weighed last year and Landcruisers make up a bit of that weight so was wondering if there are lighter suitable tyres out there ??

For what’s it worth, in last years dry conditions I never thought Landcruisers didn’t offer enough grip