In the UK it's not so much about tyre clearance, as mud clearance.
Many of our off road routes consist of sticky mud covered in a fine layer of gloop.
I only venture off road in dry conditions (both days each year) so clearance for 28c or 30c tyres is fine. That also means I can fit mudguards for the 6 months of the year when the roads are wet.
If you want to ride off road through the winter you need magical route selection or some pretty extreme kit.
In the UK it's not so much about tyre clearance, as mud clearance.
Many of our off road routes consist of sticky mud covered in a fine layer of gloop.
I only venture off road in dry conditions (both days each year) so clearance for 28c or 30c tyres is fine. That also means I can fit mudguards for the 6 months of the year when the roads are wet.
If you want to ride off road through the winter you need magical route selection or some pretty extreme kit.