Hi Chris:
The lines should be about 1/2 an inch thick all around.
Terry and Rob have raised an interesting question about tire pressures. The books I have indicate that the TP should be on the inside of the driver's door or on the dash, if there was no door, as follows: TP: F36 R40. Sometimes the words Tire Pressure(s) were written out. Some units seem to have adopted the US style of marking over the wheel arches or on the sides of the fenders so both could be historically accurate but on the door or dash would be more correct.
Cheers! Mike
