A 21 front wheel and tyre, will look odd under a 20 mudguard? the radious is so different? need to look for a 21 mudguard?
what about the rear? a 20 in tyre under a nromal 19 mudguard will look strange?
this one offered by the spare company, has a special radious for 20 inches tyres? or is just a shortened rapide one ?
Didn't you see this p[icture earlier in this thread, 21" front and 20" rear with original standard guards ?