The 2020 Jeep Grand Cherokee tire size depends on trim: the Altitude, AWD takes 265/50R20 107T; the Altitude, RWD takes 265/50R20 107T; the High Altitude, 3.6L Eng VIN G, RWD takes 265/50R20 107T; the Laredo, AWD, Full Time T/Case Control takes P245/70R17 108T; the High Altitude, 3.6L Eng VIN G, AWD takes 265/50R20 107T; the High Altitude, 5.7L Eng VIN T takes 265/50R20 107T; the Laredo, AWD, Automatic T/Case Control takes P245/70R17 108T; the Laredo, RWD takes P245/70R17 108T; the Limited X, 3.6L Eng VIN G, RWD takes 265/50R20 107V; the Limited X, 3.6L Eng VIN G, AWD takes 265/50R20 107V; the Limited X, 5.7L Eng VIN T takes 265/50R20 107V; the Limited, 3.6L Eng VIN G, AWD takes 265/60R18 110T; the Limited, 5.7L Eng VIN T takes 265/60R18 110T; the Limited, 3.6L Eng VIN G, RWD takes 265/60R18 110T; the Overland, 3.6L Eng VIN G, AWD takes 265/50R20 107T; the Overland, 5.7L Eng VIN T takes 265/50R20 107T; the Overland, 3.6L Eng VIN G, RWD takes 265/50R20 107T; the SRT takes 295/45ZR20 110W; the Summit, 3.6L Eng VIN G, AWD takes 265/50R20 107T; the Summit, 3.6L Eng VIN G, RWD takes 265/50R20 107T; the Summit, 5.7L Eng VIN T takes 265/50R20 107T; the Trackhawk takes 295/45ZR20 110W; the Trailhawk, 5.7L Eng VIN T takes 265/60R18 110T; the Trailhawk, 3.6L Eng VIN G takes 265/60R18 110T; the Upland, AWD, Automatic T/Case Control takes 265/50R20 107T; the Upland, AWD, Full Time T/Case Control takes 265/50R20 107T; the Upland, RWD takes 265/50R20 107T, per the factory service manual.
Factory-Spec Tire Size
Varies by trim
Altitude, AWD: 265/50R20 107T
Altitude, RWD: 265/50R20 107T
High Altitude, 3.6L Eng VIN G, RWD: 265/50R20 107T
Laredo, AWD, Full Time T/Case Control: P245/70R17 108T
High Altitude, 3.6L Eng VIN G, AWD: 265/50R20 107T
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