Originally Posted by
Hiro11
The pressures I run on my primary bikes, all of which are set up tubeless. I weigh about 165. I check the pressure sometimes with an SKS digital gauge but I generally just go off the gauge on my pump (a Topeak Joe Blow Pro Digital, awesome pump BTW).
Road, currently 28mm GP5000TL: 75-80
Cross, currently 32mm Gravelking slicks (these on on fat hookless rims and measure out to 35mm): 40-45 (caveat: new bike, haven't ridden much)
MTB, current 2.25 Maxxis Ardents: 22-24
Gravel, currently 50mm Gravelking SKs: 30-35
Fat, currently 5" Jumbo Jims: 15 trail, 8ish snow.
The Silca tool's recommended pressures are significantly higher than I like to run, maybe they're talking tubed.
Hmm, thought I'd take what you told us and check it out. Below has what I got using the Silca calculator (pro version) and 185lb total rider+bike weight. I indicated the surface types that I guessed. for reference, Silca's description of these are here:
https://cdn.shopify.com/s/files/1/03...Guide.pdf?8341
Road, currently 28mm GP5000TL: 75-80;
Silca = 77psi (using "Worn Pavement / Some Cracks)
Cross, currently 32mm Gravelking slicks (these on on fat hookless rims and measure out to 35mm): 40-45 (caveat: new bike, haven't ridden much);
Silca = 41 psi using Type3 Gravel and 35mm WAM you provided
MTB, current 2.25 Maxxis Ardents: 22-24.
Silca = 16 psi using 58mm on 26" wheel and Category 4 Gravel
Gravel, currently 50mm Gravelking SKs: 30-35 --
Silca = ~26psi; Using Type2 Gravel
Fat, currently 5" Jumbo Jims: 15 trail, 8ish snow. Not available in Silca tool