See also:

Tire identification marks
Tire size 255/50 R 19 103 Y 255: nominal width in mm 50: aspect ratio in % R: radial tire code 19: rim diameter in inches 103: load rating, not for ZR tires Y: speed rating, before the R on ZR ...

Lingering Issues
The X5 hasn't aged well. The styling — unchanged since the second generation hit dealerships in late 2006 — looks expressive up front but ham-handed in back. From the glove compartment to the cent ...

Avoid high engine speeds
Driving at a low engine speed reduces fuel consumption and minimizes wear. ...