Welcome to Custom Auto Trim! We provide Beloit, Wisconsin, and the surrounding areas with expert customizable auto care. We have over 50 years of experience in the auto upholstery industry. Our experts provide everything from custom upholstery, to custom interiors and various types of auto seat covers. Whether you want to just spruce up your interior or you are looking for a new cover for your convertible top, we are the experts to see! We provide you with great services at affordable honest pricing.