Recent Content by 70chall440

My bad, I was/am looking at tiresize.com. The tire is a Trail Grabber M/T 35-12.5R/17 and what i am seeing is 597 rev/mile. So maybe I need to do as you suggest.

Thinking about this, I had the wheels and tires installed at a local 4wheelparts place in 2015, I wonder if they didn't "adjust" the speedo and jacked it up

Interesting, well it definitely isn't slow (the speedo), I have checked it using different GPSs as well as phone apps oh and also some radar systems placed on roads to show you your speed. All of those have been pretty consistent.; the speedo is fast.

Well the truck had 20s on it when new, so I am running a smaller tire which would make it act as it is I would think. Either way, I can adjust it but I need to pick what number i am going to try next.

Anyone have any suggesting's on what the "right" number would be to use? I really do appreciate all the responses, the TDR is awesome and has always been a great help.

The Nitto site lists the circumference as 109.9" and the rev/mil as 577

Nitto lists the size as 109.0 which equates to 2791mm. I saw somewhere (perhaps here) that the actual number to be used would be slightly less which is why I am asking on here. I am sure i can get it via trail and error but given that it is a little bit of a debacle changing it via alphaODB.

So I have Alpha ODB and I made one adjustment trying to get my speedo more accurate. I am running 35x12.50R/17 which replaced the stock L285-60R/20E wheels/tires. My speedo always ran 2 - 4 mph faster after the change (meaning when the speedo said 70 I was actually going 66). So with the Alpha...

Merry Christmas all

@Ozymandias it sure seems that way, this AlphaOBD appears pretty capable. It took me a little while to figure out what did what but I am learning it as I go (like most I suspect).

@brucejohnson I don't know that I have ever seen the warnings... I will play with it some perhaps today and see what I can figure out. When I got the truck I was a bit upset that it didn't have a backup camera but then again the truck is strange in that it has the towing package but did not have...

Thanks so much. I have to admit it is a bit scary messing around inside the truck's electronics but so is/was pretty much every other aspect of vehicle building at some point. Now that you mention it, I think those lines did go away after the last time I took my truck to the dealer for a...

I will take a look at it tomorrow and see if I can figure it out. Its a factory camera I believe but if not I have another one... LOL.

Do your guys backup cameras show lines? I retrofitted my truck with a factory backup camera, had a dealer enable the camera but there are no lines, I don't think there ever was but I am not sure now.

I will add that I tried the "Chrysler pin pull" app and it did not work at all, however its possible that I messed up the procedure (not in RUN or something).