The 2019 Toyota Tundra tire size depends on trim: the 1794 Edition, 4WD takes P275/55R20 111H; the Limited, 4D Pickup Crew Cab, 4WD takes P275/55R20 111H; the Limited, 4D Pickup Crew Cab, RWD takes P275/55R20 111H; the Limited, 4D Pickup Extra Cab, 4WD takes P275/55R20 111H; the Platinum, 4WD takes P275/55R20 111H; the Limited, 4D Pickup Extra Cab, RWD takes P275/55R20 111H; the Platinum, RWD takes P275/55R20 111H; the 1794 Edition, RWD takes P275/55R20 111H; the SR5, 4D Pickup Crew Cab, 4.6L Eng VIN M, 4WD takes P275/65R18 114T; the SR5, 4D Pickup Crew Cab, 5.7L Eng VIN Y, RWD takes P275/65R18 114T; the SR, 5.7L Eng VIN Y, RWD takes P255/70R18 112T; the SR5, 4D Pickup Crew Cab, 5.7L Eng VIN W takes P275/65R18 114T; the SR, 4.6L Eng VIN M, 4WD takes P255/70R18 112T; the SR5, 4D Pickup Crew Cab, 4.6L Eng VIN M, RWD takes P275/65R18 114T; the SR, 4.6L Eng VIN M, RWD takes P255/70R18 112T; the SR, 5.7L Eng VIN Y, 4WD takes P255/70R18 112T; the SR5, 4D Pickup Extra Cab, 4.6L Eng VIN M, 4WD takes P275/65R18 114T; the SR5, 4D Pickup Extra Cab, 4.6L Eng VIN M, RWD takes P275/65R18 114T; the SR5, 4D Pickup Extra Cab, 5.7L Eng VIN Y, RWD takes P275/65R18 114T; the SR5, 4D Pickup Extra Cab, 5.7L Eng VIN Y, 4WD takes P275/65R18 114T; the SR5, 4D Pickup Extra Cab, 5.7L Eng VIN W takes P275/65R18 114T; the TRD Pro takes P275/65R18 114T; the SR5, 4D Pickup Crew Cab, 5.7L Eng VIN Y, 4WD takes P275/65R18 114T, per the factory service manual.
Factory-Spec Tire Size
Varies by trim
1794 Edition, 4WD: P275/55R20 111H
Limited, 4D Pickup Crew Cab, 4WD: P275/55R20 111H
Limited, 4D Pickup Crew Cab, RWD: P275/55R20 111H
Limited, 4D Pickup Extra Cab, 4WD: P275/55R20 111H
Platinum, 4WD: P275/55R20 111H
Limited, 4D Pickup Extra Cab, RWD: P275/55R20 111H
Platinum, RWD: P275/55R20 111H
1794 Edition, RWD: P275/55R20 111H
SR5, 4D Pickup Crew Cab, 4.6L Eng VIN M, 4WD: P275/65R18 114T
SR5, 4D Pickup Crew Cab, 5.7L Eng VIN Y, RWD: P275/65R18 114T