I did the same thing. But, I was at Goodguys and performance was having a sale on US Wheels Smoothies. 50 each. I got 15x6 and 15x7 painted them. Got a guy to mount my L78-15 for 40 out the door. Granted they are 30 year old tires but they hold air and for now they are great for cruising. I did bite the bullet and get the trim rings and caps. Those are not cheap