Hey I just got new rims 20 x 9 0 offset with 305/55/r20, its rides good but when your reach 100kph the truck moves back and forth like a jerking motion??

 

Stock tires were 275/55/r20
new tires are 305/55/r20

 

Bump
LOL

Just helping you get more help on your threads.

 

275/55/20 are 31.9" diameter
305/55/20 are 33.2" diameter

There is your problem, the transmission is not getting the right speed input to shift properly nor will your speedo be correct. You HAVE to reprogram the PCM so it gets the correct speed input. That is done with a programmer such as an SCTx4 or equivalent.

 

This would fix the problem?

 

 

Lool we will see what happens

 

Should fix it tho

 

Hey I just got new rims 20 x 9 0 offset with 305/55/r20, its rides good but when your reach 100kph the truck moves back and forth like a jerking motion??

 

Probably groove wonder , certain tires are very susceptible to it . They follow the grooves in the road ie: From transport trucks .