TommyR
Junior Member
Hi,
I just picked up a new to me 2015 5.7 Ram 1500 (6 speed, 3.55). The build sheet indicates that the truck came with the stock 265 70 17s (that's what the spare underneath is). The previous owner put 275 60 20s on it with stock 20s. The speedo is off a bit due to the bigger tires on it (4.4% difference in tire diameter). I did quite a lot of reading/searching to get to this point and didn't find all of the info that I was looking for so my questions are as follows:
-Will the upsized tires (33" vs 31.6") have any negative effects? (e.g., changing transmission shift points/harder on transmission, altering ABS etc)
-Do people regularly switch over between stock 20s and stock 17s in the winter with no ill effects and no speedo recalibration?
-If I were to blow a 20" tire and have to use the factory 17" spare would that cause issues?
-Would I be better to run a 275 55 20 which is much closer to the size of the factory 17 (31.9" vs 31.6") and if so could I still use the spare if needed?
Thanks in advance for any help. It is my first truck so I'm just trying to figure out what is best to do.
Tom
I just picked up a new to me 2015 5.7 Ram 1500 (6 speed, 3.55). The build sheet indicates that the truck came with the stock 265 70 17s (that's what the spare underneath is). The previous owner put 275 60 20s on it with stock 20s. The speedo is off a bit due to the bigger tires on it (4.4% difference in tire diameter). I did quite a lot of reading/searching to get to this point and didn't find all of the info that I was looking for so my questions are as follows:
-Will the upsized tires (33" vs 31.6") have any negative effects? (e.g., changing transmission shift points/harder on transmission, altering ABS etc)
-Do people regularly switch over between stock 20s and stock 17s in the winter with no ill effects and no speedo recalibration?
-If I were to blow a 20" tire and have to use the factory 17" spare would that cause issues?
-Would I be better to run a 275 55 20 which is much closer to the size of the factory 17 (31.9" vs 31.6") and if so could I still use the spare if needed?
Thanks in advance for any help. It is my first truck so I'm just trying to figure out what is best to do.
Tom