You can definitely feel the extra weight in the steering although I'm not sure if the ride quality is affected as I went form 15" to 17" alloys at the same time which definitely caused the ride to be more crashey over bumps than it was before. So I can't say whether it's being caused by heavier wheels/lower profile tyres or weight of the brakes. Might be better to go for 16" rims to try and preserve a bit of ride quality. Overall they are worth it for the extra stopping power. Fitting is the same as changing standard brakes, except for the use of longer bolts and spacers.