The 2005 Toyota Tundra tire size depends on trim: the Base, 4.0 U, Automatic takes P245/70R16 106S; the Base, 4.0 U, Standard takes P245/70R16 106S; the Base, 4.7 T, 4WD takes P245/70R16 106S; the Base, 4.7 T, RWD takes P245/70R16 106S; the Limited, 4D Pickup Extra Cab, 4WD takes P265/65R17 110S; the Limited, 4D Pickup Extra Cab, RWD takes P265/65R17 110S; the Limited, 4D Pickup, 4WD takes P265/65R17 110S; the Limited, 4D Pickup, RWD takes P265/65R17 110S; the SR5, 4D Pickup Extra Cab, 4.0 U, Automatic takes P245/70R16 106S; the SR5, 4D Pickup Extra Cab, 4.0 U, Standard takes P245/70R16 106S; the SR5, 4D Pickup Extra Cab, 4.7 T, 4WD takes P245/70R16 106S; the SR5, 4D Pickup Extra Cab, 4.7 T, RWD takes P245/70R16 106S; the SR5, 4D Pickup, 4WD takes P245/70R16 106S; the SR5, 4D Pickup, RWD takes P245/70R16 106S, per the factory service manual.
Factory-Spec Tire Size
Varies by trim
Base, 4.0 U, Automatic: P245/70R16 106S
Base, 4.0 U, Standard: P245/70R16 106S
Base, 4.7 T, 4WD: P245/70R16 106S
Base, 4.7 T, RWD: P245/70R16 106S
Limited, 4D Pickup Extra Cab, 4WD: P265/65R17 110S
Limited, 4D Pickup Extra Cab, RWD: P265/65R17 110S
Limited, 4D Pickup, 4WD: P265/65R17 110S
Limited, 4D Pickup, RWD: P265/65R17 110S
SR5, 4D Pickup Extra Cab, 4.0 U, Automatic: P245/70R16 106S
SR5, 4D Pickup Extra Cab, 4.0 U, Standard: P245/70R16 106S
SR5, 4D Pickup Extra Cab, 4.7 T, 4WD: P245/70R16 106S
SR5, 4D Pickup Extra Cab, 4.7 T, RWD: P245/70R16 106S