Gaps Between Body And Wheels

[legendswraith]

Reckon this could be one for tony but others may know so, jsut put some new bridgestone 275/35/19s onto the risto to replace the 275/30/19s. Did not think that this would be that much of a problem but it has turned out to be. The increase in profile has seen the tyres foul slightly on the wheel arch inner so i either need to change the ride height at the rear or go more negative on the camber.

My first inclination is to increase the ride height by the difference in the profile size (approx 20mm) as i am assuming that amount wont compromise the rake angle of the car very much over the distance (0.5deg). The concern i have is exactly how much clearance should i have between car and rubber, i'm fairly certain its just on the sidewall/tread area its rubbing but i don't want any bumps to push the tyre into the arches at speed. Will also bring my cambers in at the back very slightly but will it mess with any other settings?