Pontiac 2004 Montana Owner's Manual page 402

(F) Uniform Tire Quality Grading (UTQG): Tire
manufacturers are required to grade tires based on three
performance factors: treadwear, traction and
temperature resistance. For more information, see
Uniform Tire Quality Grading on page 5-73.
(G) Maximum Cold Inflation Load Limit: Maximum
load that can be carried and the maximum pressure
needed to support that load. For information on
recommended tire pressure see Inflation - Tire Pressure
on page 5-68 and Loading Your Vehicle on page 4-33.
LT-Metric Tire
5-60