Perhaps resistance isnt the best term to use, but which would slow you down more, weight or width of a tire?
For instance, lets say I had a 500g tire at 3.0 vs a 800g tire at 2.15, extreme examples I know, but which would detract more?
For instance, lets say I had a 500g tire at 3.0 vs a 800g tire at 2.15, extreme examples I know, but which would detract more?