Now then. Some of you will read what I’m about to write and think ‘dumb f**k’, but I’m going to say it anyway just in case anyone else makes the same mistake
For years I’ve had a cheap track pump from either Lidl or Aldi. It’s actually quite good, nice and solid, aluminium. Valves work perfectly, nice lever. Been pumping my tubeless tyres to around 30 psi in the summer, bit less now
I just bought a Toppeak digital pressure gauge just because I felt like buying a little handy gadget and accurately reading my psi
What I thought was 30 psi, actually reads 20psi on the digital pressure gauge. The cheap Aldi / Lidl track pump is on average a whole 10 psi inaccurate. I knew it wouldn’t be dead accurate, so expected it to be +/- 2 psi out, but a whole 10psi is massive
So when I’ve been filling my tyres to 30 psi, it’s actually been 20 psi. More recently I’ve been running them around what I thought was 24 psi, it’s actually been 14 psi. No wonder my tyres almost look flat when I climb on the bike!
Pumped my tyres to 30 psi yesterday morning for Hamsterley as the man made trails are full of jump lines & drops, my Aldi / Lidl track pump read that as 40 psi. My tyres were rock hard, absolutely fine for the hard pack man made surface at Hammers. Been riding some off piste at Dalby today which is quite wet & muddy, absolutely no grip whatsoever at 30 psi, back to my usual 20 psi it was for the grip!
Can’t recommend getting yourself an accurate pressure gauge enough!