Currently I'm using a wheel cover on my rim brake Flo 60's. I'm thinking of buying a bike with disc brakes and aerojacket doesn't make wheel covers for disc brake bikes. It also looks like Race Day Wheels doesn't rent rear discs for disc brake bikes. Are people going out and buying new $2,500 to $3,500 disc brake compatible rear discs left and right or is there a more cost effective option?