well,
no,you do not have to have a wheel,as thier are some wr holders that use the keybourd and mouse. Of course,having a wheel makes playing the game easier,but is not a must. In fact,my wheel broke like a month ago,and originally I SUCKED with the mouse,but after a day or so of practicing ,I noticed it wasnt so bad after all. I was actually only a second off some of my pb's after a week or so of practise ,and,with the mouse at the oval,I actually got a new pb. of course,I am still searching for a new wheel,but playing with the mouse isnt horrible at all.