soze

I bought a set of Style 125's for my 545i (non sport) and I'm wondering what the max tire size is. They are 19 x 8.0 inches (front) and 19 x 9.5 inches (rear). The recommended sizes are 245/35R-19 (front) and 275/30R-19 (rear). They need a new set of tires, but I put two on one side of the car just to see what they look like. They wheels are great, but there is a lot of room left in the wells. Can I go up a size in tires (sidewall) or is this not recommended?