The stock tyres on the Sequoia are great off-road. If you live in California and off-road means gravel, rocks and dust. In Northern European mud they're merely ok. The biggest problem though is mudguard clearance – not clearance to get mudguards in, but between mudguards and tyres to stop them clogging in said mud. Though that's probably partly down to my particular, voluminous and slightly wobbly, mudguards. I'm considering going narrower; from the stock 42s down to 40 or 38. The Compass Somethingorother Pass look good, but might start out with humble Paselas (if I can find some with black sidewalls) as proof of concept.