2021 RAM ProMaster 1500 Tire Sizes
Factory original equipment (OE) tire specifications.
(118 inch wheelbase)
Tire Size
LT225/75R16/E
Load Index
115
Speed Rating
R
(118 inch wheelbase)(C-Type Tires)
Tire Size
225/75R16C
Load Index
121
Speed Rating
R
(136 inch wheelbase)
Tire Size
LT225/75R16/E
Load Index
115
Speed Rating
R
(136 inch wheelbase)(C-Type Tires)
Tire Size
225/75R16C
Load Index
121
Speed Rating
R