Hey Naveen, you should be able to find out if there are tubes inside by just looking at the valves. The tube-type valves are slightly longer and have a gap around them whereas the tubeless-type valves fit tightly to avoid air-leakage.
If you find that they have tubes inside and you want to go tubeless, you will need to remove the tubes and change the nozzle to a tubeless one.
Also check the condition of the tyres, if they are pretty old and worn out, it is possible that the previous owner must have put in tubes as he was having a lot of punctures and found repairing tubless punctures expensive or it could be that the dealer suggested to fit in tubes. |