Upgraded rim/tires causing jerk/stutter/shifting problems.
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Upgraded rim/tires causing jerk/stutter/shifting problems.
Have a new 2018 SXT AWD with standard 265/60/18 tires/rims. I switched them out to 265/50/20 tires/rims (rims are Dodge 20 you get on GT models, tires Pirelli I think you get on Jeep. Since installing them (tire place did it) At 70 mph I feel a stutter, or jerk, like the truck is being held back, or a hard shift (even though it's already shifted into 8 well before). I can still give it gas and it will go but there is something happening. I don't notice it any any other speeds. Am I missing something with upgrading wheels? These should work fine. Would changing tires mess up maybe AWD system? Any help, before I go to dealer would be helpful.
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Is this the V6 model? The static mass of the wheel and tire combo (likely a bit heavier) in addition to increased drag above 70 mph is likely causing your transmission to downshift as it tries to overcome these factors. At 60 true mph, your speedometer will be reading just over 2mph faster.
If this is a HEMI mated to an 8 speed, then my above ideas remain, but I'd be surprised that it would cause a dowshift and lurch.
If this is a HEMI mated to an 8 speed, then my above ideas remain, but I'd be surprised that it would cause a dowshift and lurch.
#7
Is this the V6 model? The static mass of the wheel and tire combo (likely a bit heavier) in addition to increased drag above 70 mph is likely causing your transmission to downshift as it tries to overcome these factors. At 60 true mph, your speedometer will be reading just over 2mph faster.
If this is a HEMI mated to an 8 speed, then my above ideas remain, but I'd be surprised that it would cause a dowshift and lurch.
If this is a HEMI mated to an 8 speed, then my above ideas remain, but I'd be surprised that it would cause a dowshift and lurch.
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Nope no light. Thanks for a possible solution.