Excuse my terminology bare with me. Front left wheel is scraping on the arch, checked to see if a thicker tyre was fitted as I've had it before with a larger sized tyre scraping on a car in the past. Front right is fine. It's as though the whole tyre is fitted wider than the others. It doesnt need alinging, it's not pulling to one side or anything etc and the top and bottom are equally out. What could it be?