I've got cross tubs at 33mm, it is usually the rigour for grass track. Schwalbe do cx clincher at 30mm which is popular if you have the clearance. It is almost a case of whatever you can fit.
What would you recommend for walking? Would modified sliders with spikes work
@Norfolkbound started
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I've got cross tubs at 33mm, it is usually the rigour for grass track. Schwalbe do cx clincher at 30mm which is popular if you have the clearance. It is almost a case of whatever you can fit.