Tire Load ratings
The 18" OEM PS2 load/speed ratings are 93Y front and 97Y rear. Tirerack shows 4 size PS2 93Y fitments in the front (1 for BMW, 1 for Mercedes, and 2 others). This suggests a subtle construction difference. Does anyone know if this is true and/or what the difference is? There is only 1 OEM size for the rear that is 97Y. Also, is there any value in selecting a higher load rating for a given size?