Tyre label values explained

Fuel Rating:
Tyres that are rated A will give you much more efficient drive than those rated G.

Wet Braking:
A-Rated Tyres have a much shorter stopping distance, and therefore much safer than G-rated tyres. 

Noise Rating:
3 "bars" then it is one of the noisier tyres.
2 "bars" mean that a tyre performs at an average level.
1 "bar" indicates a very low noise from the tyre. 

Vehicle Classification:
C1 = Tyres that are intended for vehicles of category M1 (Vehicles used for the carriage of passengers) plus O1 (Trailers with a maximum mass not exceeding 0.75 tonnes) and O2 (Trailers with a maximum mass exceeding 0.75 tonnes, but not exceeding 3.5 tonnes).

C2 = Tyres intended for vehicles above 3.5t of category M2 (Vehicles comprising of more than eight seats in addition to the driver's seat used for the carriage of passengers, and having a maximum mass not exceeding 5 tonnes) plus category M3 (Vehicles comprising of more than eight seats in addition to the driver's seat used for the carriage of passengers, and having a maximum mass exceeding 5 tonnes) plus category N (Power-driven vehicles having at least four wheels and used for the carriage of goods) plus category O3 (Trailers with a maximum mass over 3.5 tonnes, but not exceeding 10 tonnes) and category O4 (Trailers with a maximum mass over 10 tonnes).

C3 = Tyres intended for vehicles above 3.5t of category M1 (Vehicles used for the carriage of passengers) plus category M2 (Vehicles comprising of more than eight seats in addition to the driver's seat used for the carriage of passengers, and having a maximum mass not exceeding 5 tonnes) plus category M3 (Vehicles comprising of more than eight seats in addition to the driver's seat used for the carriage of passengers, and having a maximum mass exceeding 5 tonnes) plus category N2 (Vehicles used for the carriage of goods and having a maximum mass in excess of 3.5 tonnes but not exceeding 12 tonnes) plus category N3 (Vehicles used for the carriage of goods & having a maximum mass exceeding 12 tonnes) plus category O3 (Trailers with a maximum mass over 3.5 tonnes, but not exceeding 10 tonnes) and category O4 (Trailers with a maximum mass over 10 tonnes).