Race

SRW- Wet Racing Tyres: 45+/-6 ShA

SRB- Soft/Medium Racing Slicks: 52+/-6 ShA
. exceptional grip
. good "feel" and life span
. great value for money

SRL- Med/Hard Racing Slick: 60+/-3 ShA
. ideal for indoor or outdoor racing
. exceptional grip
. great endurance for longer racing

Rental

SRC- Medium/Hard: 61+/-3 ShA
. low temperature indoor or outdoor racing
. designed for smooth surfaces

SRE- Hard: 64+/-3 ShA
. ideal for indoor or outdoor driving
. designed for rough surfaces
. excellent value for grip

SRH- Very Hard: 64+/-3 ShA
. designed for especially rough surfaces

SRX- Extra Hard: 69+/- ShA
. designed for maximum longevity