The 2013 Nissan Titan tire size depends on trim: the PRO-4X, 4D Pickup Extra Cab, 5.6L Eng VIN A takes P275/70R18 116T; the PRO-4X, 4D Pickup Extra Cab, 5.6L Eng VIN B takes P275/70R18 116T; the PRO-4X, 4D Pickup, 5.6L Eng VIN A takes P275/70R18 116T; the PRO-4X, 4D Pickup, 5.6L Eng VIN B takes P275/70R18 116T; the S, 4D Pickup Extra Cab, 5.6L Eng VIN A, 4WD takes P265/70R18 114S; the S, 4D Pickup Extra Cab, 5.6L Eng VIN A, RWD takes P265/70R18 114S; the S, 4D Pickup Extra Cab, 5.6L Eng VIN B, 4WD takes P265/70R18 114S; the S, 4D Pickup Extra Cab, 5.6L Eng VIN B, RWD takes P265/70R18 114S; the S, 4D Pickup, 5.6L Eng VIN A, 4WD takes P265/70R18 114S; the S, 4D Pickup, 5.6L Eng VIN A, RWD takes P265/70R18 114S; the S, 4D Pickup, 5.6L Eng VIN B, 4WD takes P265/70R18 114S; the S, 4D Pickup, 5.6L Eng VIN B, RWD takes P265/70R18 114S; the SL, 5.6L Eng VIN A, 4WD takes P275/60R20 114S; the SL, 5.6L Eng VIN B, RWD takes P275/60R20 114S; the SL, 5.6L Eng VIN B, 4WD takes P275/60R20 114S; the SL, 5.6L Eng VIN A, RWD takes P275/60R20 114S; the SV, 4D Pickup, 5.6L Eng VIN A, 4WD takes P265/70R18 114S; the SV, 4D Pickup Extra Cab, 5.6L Eng VIN A, RWD takes P265/70R18 114S; the SV, 4D Pickup Extra Cab, 5.6L Eng VIN A, 4WD takes P265/70R18 114S; the SV, 4D Pickup, 5.6L Eng VIN B, 4WD takes P265/70R18 114S; the SV, 4D Pickup Extra Cab, 5.6L Eng VIN B, RWD takes P265/70R18 114S; the SV, 4D Pickup, 5.6L Eng VIN A, RWD takes P265/70R18 114S; the SV, 4D Pickup, 5.6L Eng VIN B, RWD takes P265/70R18 114S; the SV, 4D Pickup Extra Cab, 5.6L Eng VIN B, 4WD takes P265/70R18 114S, per the factory service manual.
Factory-Spec Tire Size
Varies by trim
PRO-4X, 4D Pickup Extra Cab, 5.6L Eng VIN A: P275/70R18 116T
PRO-4X, 4D Pickup Extra Cab, 5.6L Eng VIN B: P275/70R18 116T
PRO-4X, 4D Pickup, 5.6L Eng VIN A: P275/70R18 116T
PRO-4X, 4D Pickup, 5.6L Eng VIN B: P275/70R18 116T
S, 4D Pickup Extra Cab, 5.6L Eng VIN A, 4WD: P265/70R18 114S
S, 4D Pickup Extra Cab, 5.6L Eng VIN A, RWD: P265/70R18 114S
S, 4D Pickup Extra Cab, 5.6L Eng VIN B, 4WD: P265/70R18 114S
S, 4D Pickup Extra Cab, 5.6L Eng VIN B, RWD: P265/70R18 114S
S, 4D Pickup, 5.6L Eng VIN A, 4WD: P265/70R18 114S
S, 4D Pickup, 5.6L Eng VIN A, RWD: P265/70R18 114S
S, 4D Pickup, 5.6L Eng VIN B, 4WD: P265/70R18 114S
S, 4D Pickup, 5.6L Eng VIN B, RWD: P265/70R18 114S
SL, 5.6L Eng VIN A, 4WD: P275/60R20 114S
SL, 5.6L Eng VIN B, RWD: P275/60R20 114S
SL, 5.6L Eng VIN B, 4WD: P275/60R20 114S
SL, 5.6L Eng VIN A, RWD: P275/60R20 114S
SV, 4D Pickup, 5.6L Eng VIN A, 4WD: P265/70R18 114S
SV, 4D Pickup Extra Cab, 5.6L Eng VIN A, RWD: P265/70R18 114S
SV, 4D Pickup Extra Cab, 5.6L Eng VIN A, 4WD: P265/70R18 114S
SV, 4D Pickup, 5.6L Eng VIN B, 4WD: P265/70R18 114S
SV, 4D Pickup Extra Cab, 5.6L Eng VIN B, RWD: P265/70R18 114S
SV, 4D Pickup, 5.6L Eng VIN A, RWD: P265/70R18 114S
SV, 4D Pickup, 5.6L Eng VIN B, RWD: P265/70R18 114S
SV, 4D Pickup Extra Cab, 5.6L Eng VIN B, 4WD: P265/70R18 114S