On a trip to Pakistan in the mid 80s, I saw an old Morris Minor taxi which had what looked like low profile tyres.
On closer inspection, they were solid tyres - as far as I could tell moulded somehow into the rims. No tread. No valves.
This prompted me to look for others. Sure enough, it wasn?t the only one.
Westerners are advised to avoid the yellow top taxis but they hang around the hotels etc and often have tots who will try to direct you to one.