Cadillac BLS Owner's Manual page 246

460_OM_MY09.book Page 246 Wednesday, April 2, 2008 10:32 AM
Technical data 246
Cold tyres refers to tyres that are the same temperature as the
surrounding air.
The tyre pressure values in the table apply at 20 °C.
Tyre pressure will increase as the tyres become warm (e.g. during
motorway driving), and decrease as they cool.
When the temperature of the tyres increases or decreases
by 10 °C, tyre pressure will correspondingly increase or decrease
by 0.1 bar (10 kPa, 2 psi).
The speed rating specified in the table is the lowest recommended
speed rating. For speed ratings, refer to page 211.