Hi Douglas,
On a 30mm ID Arc rim I measure the SE2 casing as ~2.53” and the outside-outside knobs at ~2.58”. The knobs are a bit tricky as they’re offset side to side.
For really sharp terrain rocks a smaller tire can be a better bet (lower volume - less likely to contact a rock) but yes our rocks are generally less jagged than other rocky places I’ve ridden.
Sept. 17, 2018, 12:43 p.m. - Andrew Major
Hi Douglas, On a 30mm ID Arc rim I measure the SE2 casing as ~2.53” and the outside-outside knobs at ~2.58”. The knobs are a bit tricky as they’re offset side to side. For really sharp terrain rocks a smaller tire can be a better bet (lower volume - less likely to contact a rock) but yes our rocks are generally less jagged than other rocky places I’ve ridden.