Are BMX tyres also suitable. You see some manufacturers who don't do a touring/commuting 20" tyre in their range but offer some quite impressive BMX tyres like the Kenda Konversion for example, very strong, heavy and capable of very high pressure. Just wondering what issues using a BMX tyre would cause? Kenda are the actual manufacturer behind many tyre brands (mainly actual bike brand tyres). Schwalbe are manufactured by PT Hung A and my experience of Schwalbe hasn't been that great compared to Kenda and that was 26" Schwalbe Marathons although we are talking over 10 years ago and I can't remember the exact model but with my ample frame on the wear rate was very high and they were a long way from puncture resistant. I replaced with Kenda's and they just seemed much better although can't for the life of me remember the Kenda model.