I won't argue the point. You have your resources and I have my personal experience with programers and large tire upgrades. We will leave it at that. Neither one of us is going to convince the other. Let the member decide what is best for them.
This is almost like an oil thread!!
You're right, I am running 37's 100lbs a corner and 100lbs on the spare on 2 door now and getting by with 18-19 mpg on the receipts. 20ish on the lie o meter. Hills I got, steel bumpers I got, steel running boards, am I fully loaded no. I just don't want to tuck anyone in for bed without telling them a nice story first. I just wanted to share my experience, also without discrediting anyone here. To the OP I agree again with the members here suggesting the Tazer
I drive like I don't care about fuel economy, cause I mostly don't. I But with regular at 4.15/gal at Costco the last fillup, it does seem pretty high. Still, at this time it doesn't hurt much, since I'm not driving much. I have to fill up on average maybe once or twice a month at most. I guess if it was a burden, I'd have bought one of those "clown cars" as my calls them, Smartcar is the trade name.
I saw this discussion was curious and started searching. I located a service manual for the 8hp45. Possibly they have some similarities in their system design and shift logic. This is a logic chart for the shift points.I won't argue the point. You have your resources and I have my personal experience with programers and large tire upgrades. We will leave it at that. Neither one of us is going to convince the other. Let the member decide what is best for them.
As already stated, I vote to change gear ratios whenever changing tire size along with a programmer.
As far as you going to bow out I will be surprised if you do. But hey that's just my personal experience of how these threads go.
This is almost like an oil thread!!
Yes Brad, brakes is another huge consideration to think about when upgrading to heavier wheels and tires.
My experience with my 14 GMC crewcab truck was that I had street tread 31.6" x 10.4 tire stock and I put on a hybrid AT/mud tire that was 32.6" x 12.2". The diameter was increased 1" but I think the rolling resistance played a large role in killing the highway mileage from about 19mpg @ 75mph to 15mpg. I would put a good bit of that on the tread pattern being aggressive as well as the width. Big Tires Matter.
), and them big 'ol tars ain't gonna fit in the back of the Jeep.
Like the Rubicon, my Sahara came with the HD brakes. 48k+ miles and so far so good. I’ve not noticed fading coming down a few mountains with my 34.5“ tall and HEAVY 295/70/18 Mickey Thompson Baja Boss AT’S. 98lbs each with the stock 25 lb 18x7.5”wheels.
It seems like there is a reluctance on the part of some Jeep drivers to accept that the acceleration input and the engine torque input incorporate all the information that would be suggested by some or any arbitrary value of "speed" (a.k.a. velocity). In other words, "speed" is irrelevant since inertia is already accounted for.I saw this discussion was curious and started searching. I located a service manual for the 8hp45. Possibly they have some similarities in their system design and shift logic. This is a logic chart for the shift points.
As many have said recalibrate speedo for tire size changeI recently put on 35’s on my 19’ JLUR 2.0 with no lift, fits amazingly and definitely looks more like a real Jeep now, but when I ran stock, is was a race car especially on the highway.. now it feels like it’s struggling to shift or maintain higher speeds, i know heavier tires would effect speed and mpg’s , but was hoping it still drove closer to normal, I have an appointment to get the speedo recalibrated to the correct tire size at the dealership, hoping that helps… any input or suggestions would be awesome
