Older Nissans needed a pinion gear changed for larger tires if you wanted your speedo to be correct. I don't know if there is a software option on the gassers. The diesels may be able to do it with the EZ LYNK, but I still haven't seen it done.

 

My buddy who just retired as a master nissan Tech has a factory labtop and dealer software said he may be able to do it , he is going to let me know , I’m going to have him give me a hand putting the lift on .

 

Unless consult 3 has the option to my knowledge no one currently has a fix to correct the Speedo for bigger tires. A gearing change would be your only option but that presents some interesting questions. If you go to large of a difference, it may confuse the ecm. The wheel speed sensors wouldn’t jive with the output sensor on the transmission.

 

I know dealers few years back could change the Rev’s per mile for tire size changes but 33 was the largest , my buddy said he would hook up his factory nissan PC and see if he can do it . I also contacted Hypertech and they said there working on one but a few months out for the 2023/24 .

 

Watching this thread.
The speedo correction has not been a big deal for my Titans, since the bigger tires are not significantly larger than stock, but in my 98 Frontier I went from the stock 215/65r15 (basically car tires) to 305/65r17 mudders, and the speedo was off by like 25%.