Can't believe I'm actually asking this question but it was suggested to me last night that perhaps the reason I'm pinging around so much on the hardtail and losing traction really easily on the slightest hint of gravel on a climb is that my rear tyre is perhaps a little too hard at 40psi....it did feel rock hard to squeeze tbh.
So...who runs what psi on the rear of their MTB? For info I use tubed Kenda Nevegal/Blue Groove combo on both geared MTBs all year round/in all conditions and usually have 30psi at the front and 40psi in the rear. Minimum pressure is allegedly 40 psi for both tyres (oops) but I've run the front at 30 for a good few years now with nary a problem (touches all the wood I can find).
I just have this irrational fear that lowering the rear to 35psi or below will result in a sensation of riding through treacle with a squidgy tyre, making everything harder, particularly climbing. Though I have at least realised these days that much more than 100psi in my skinny road tyres only feels faster as I'm pinging off everything on the road as opposed to actually travelling faster.
No point asking Jez as he runs closer to 50psi in his and thinks my front tyre in particular is too soft. No I don't generally let him inflate my tyres unsupervised and yes he has pumped mine up to 50psi before..just before setting off on a ride with lots of wet limestone, hilarious it was not.