Compass makes a 42. Compass tires are a bit wider than they are tall. Other tire makers apparently make relatively taller tires. Bottom line is you can only go by the number so far. Somewhere Jan Heine describes how to measure. A quick google searc didn’t find it bit I know it’s out there. Obviously fenders make a difference.
I have Compass Barlow Pass (used to mistakenly call them Barlow Flats but that seems like a bad name for a bike tire) 38x700 on my Salsa Cassaroll low trail conversion. I run them around 50 psi. I have compass 48x650b extralights on my Bombadil. I run em 28 psi front and 32 psi rear. They both roll really nice but I really like the volume, low pressure and suppleness of the 48c a lot. So if you can fit a 42c it do it I’d say. According to compass they have 22% more air volume than 38c. So that should mean 20% less pressure to achieve the same loft or around 40 psi. I have run Schwalbe in the past. Marathon supreme and Marathon Plus. I run Gravel Kings 38 on my commuter. Like Gravel Kings but while Schwalbe are durable do not prefer them. I got some Panaracer Pacenti Quasi Moto 27.5 x2 for gravel riding later this summer. Anyone know these tires? John -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.