Buy a litre of Limestone HMG enamel paint from Paddocks, Its only £10 a litre and 1 Litre will Paint 5 LWB rims inside and out using a brush, And the top of a truck cab. Probably th ebest paint I have ever used, It can be brushed, Rollered and sprayed, And you get brilliant finishes no matter what you do. I brushed my wheels on my 2a at 12.30am on a cold December night and at Leafers, People asked did I take the wheels off and have them powder coated
Another bonus is HMG paint dries mega quick and is synthetic so will cover anything.