As someone considering a Karoq SEL, this is disconcerting. I really don't understand the entire industry fascination with oversized wheels with excessively low profiles, totally unsuited to the current state of UK roads. You can't even spec an SEL with 17" instead of 18". You can't increase the profile on the same size rime as that would increase the overall diameter. That may result in clearance issues but will definitely screw with the car's electronics calibration. You would have to drop to 17" with the 55 profile, as @SaintViking says. You'll also need to notify your insurer of the modification so may be worth checking with them first. It may just be a note of the policy or it may require an additional premium.