Forum menu
So, got myself some 30mm internal width 27.5" rims. ATM running DHF II 2.3s (because they were on my old rims) - but will probably trade up to 2.5s when these wear out.
I weigh, lets say, 13 stone / 182 lbs / 82 kgs fully loaded give or take a few pounds. I currently run pressures at about 30 back, 28 front. (I suspect you'll all scream "too much").
With the 30mm rims what would you be looking at for 2.3's and 2.5-6's?
Dunno sounds about right for that weight maybe a fraction too much
i run 17 psi front and 23 psi rear on 27.5 2.6’s on 30mm rims
i weight 10.5 st
As an example I'm similar weight and I run 22psi front in a 2.3 DHF on 25mm rim and 18psi in a 2.5 Shorty on 27mm rim or 20psi in a 2.35 Mary (bigger than a 2.3 maxxis) and 26psi in 2.3 rears. Depends on tyre casing, where and how you ride. I normally ride steep rooty woods, Lakes or Peaks rocky riding would up the pressures a couple of psi.
No point in asking others, they ride differently to you on different terrain with different skill levels.
Just get a gauge and go experiment. Start high, keep going lower till you pinch / squirm, then put some more in.
I find different pressures suit different places. Very low for the loamy non rocky Chicksands / Woburn, higher for Welsh trail centres.
Don't forget not all gauges are the same, so pick one and stick to it. Your 18 psi wont be my 18 psi.
I cba with the fine tuning really - I've all the talent of Michael McIntyre so won't be able to tell the difference in a couple of psi.
Off to Snowdon to do a dawn raid in a few weeks as it's my fave ride in the UK (so far) so I kinda wanna nail the setup for that really. 🙂
I wouldn’t run any lower than that on Snowdon unless you’re going to put dual plies on. I’m a little heavier and run about 26/28 on 2.5/2.4 WT Maxxis Exo on 25.5mm rims. I’d put more in the back for anywhere rocky though!
Well if you "cba" just put some air in then, squeeze the tyres with your thumb and go and ride. Perhaps bounce the suspension about in the carpark as well. 🙂
I often find it helps to go with the extremes to work our what’s best for you. So try them at, say, 30 psi to see how that feels, then try them at 18 psi - at least that way you can get a sense of what works best, then set accordingly.
Well if you “cba” just put some air in then, squeeze the tyres with your thumb and go and ride. Perhaps bounce the suspension about in the carpark as well. 🙂
I meant I can't be arsed changing my tyre pressures for different rides (woods, rocks, grass, long distance) - I kinda like to find what's grippy and solid in rocky scenarios (which are worst case) and then the rest of the time I'll MTFU and just ride as set... 🙂
I think I air on he side of safety - I have 25mm internal rims with a 2.5wt dhf exo on the front and 2.3 exo aggressor on the back. On a 160mm travel fs bike.
I weigh just under 12 stone and tend to run around 25 psi on the front and around 27-28 ish psi on the back. This is just using the gauge on the track pump so might not be entirely accurate but it seems to do a job. I’ve done some uplift days at BPW and a push up day at Windhill / 417 as well as multiple runs at Cwmcarn / FOD and local trails. No punctures yet - that’s running Stans sealant in them.
I see people running lower pressures and wonder if I should risk a bit lower for more grip but I like not having puncture dramas.