I decided after years of using a steering wheel cover I bought in desperation at Walmart that I really should get rid of that thing and make one myself. I searched and searched for a steering wheel cover pattern that I liked and couldn't find one. So I made one up! :D
This is designed to fit a steering wheel with a circumference of 46 inches. If your steering wheel has a different circumference, measure it and knit according to the pattern for 60% of that measurement. With that said, onward to the pattern itself...
2 balls of Peaches & Cream Worsted Weight 100% Cotton Yarn in your choice of colors.
Size US 10
Holding two strands together, CO 12 sts.
Knit in garter until long enough to stretch tightly around the steering wheel. (In this case, 28 inches.)
Sew BO edge to CO edge, being careful that it doesn’t twist.
Sew onto the steering wheel. It will be very tight, and should not require anything else to prevent slipping.
Now, it's true that this is not so easy as some to remove to wash. But if you use a constrasting color yarn to sew it on to your wheel, or you're just really careful, you can cut the string you use to sew it into place and then un-sew it, wash it, and then put it back with a yarn needle and either the same string or a new one. It works for me anyway...