5thGenRams Forums

Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

Reprogram for tire size

spinxt

Active Member
Joined
Oct 12, 2019
Messages
152
Reaction score
137
Is there a way to reprogram the 2019 Ram for a new tire size, I’d like to go with a 65 series tire on my stock 20s. If I go up to say a 265/65/20, it will result in a speedo difference of about 5mph at 70mph.
I’d love to be able to reprogram the trick to the new tire size ‍♂️
 

Captain Stack

Active Member
Joined
Jan 22, 2019
Messages
90
Reaction score
138
You can get a one-off speedo programmer from Rough Country or you can install the Pulsar from Diablo Sport and set tire size and gear ratio's using the Pulsar. I have the Pulsar installed and love it!
 

troutspinner

Ram Guru
Joined
Aug 16, 2018
Messages
809
Reaction score
835
Location
SE Pennsylvania
I went up 2” from stock tire size and my speedo is accurate all the way up to 84 (highest I’ve gone in the truck) and I never reprogrammed. I don’t get it but the Speedo and GPS from phone matches.
 

W13NY

Ram Guru
Joined
Dec 21, 2018
Messages
696
Reaction score
368
Location
New York
I bought the rough country speedo calibrator from someone on here
 

Users who are viewing this thread

Top