The tyres on Trackmaster

hello

I have noticed on some of the trackmaster trains the tyres are like spokes, all spikey and not like usual treads seen on other trains, but its not on all of them, why ?

Like is there specific trackmaster kind that have these crappy tyres ?

Also I have seen some fisher and price and thomas and friends trains, are there much difference between them, quality ?

Those spokey wheels are on the current TrackMaster Revolution range engines that came out last year. They allow the engines to grip to their own grey tracks when on slopes. What are you trying to compare on your last question? Fisher-Price have been making Thomas items since 2009.