monsoon doubts

yesterday it rained a lot and light went out , and while every time lighting striked i could see the tree from my window making scary faces. But, i was thinking what if earth didn't tilt on its axis and we didn't have summer and winter, will we still have monsoon?

as in if north of earth was always in summer, will we have monsoon - a perennial monsoon, a monsoon that comes but is weakened or no monsoon. i just want to know because monsoon are easy to imagine and if i get answer to this , i will get more data to fit into the video simulation of monsoon in my head

and while we are on it will someone please tell me how does those thread marks on tyres work. As in that grip cant get inside the road.