Need yalls help!
#1
Need yalls help!
So I have a new 2014 fx4 5.0 and I'm looking at keeping the stock 20's on it and getting a two inch leveling kit with 295 55r 20 nitto trail grapplers. My main question is, once I get my new tires and leveling kit how can I get my speedometer calibrated back to normal without using a programmer? I am new to the forum so don't spat me if this question has been asked before, I just couldn't already find a forum on it. I have heard that if you run programmers to recalibrate for this, it will void a warranty? I for sure don't want to go that route if that's the case but I have been told from a buddy that if you take it to the ford dealer they can recalibrate it to the size of the tire that I will be adding to it. Can somebody who knows more about this please help me out? I plan on getting a programmer later on once my warranty will be up but for now I wanted to see what my options are without it. I'm just sure going from a 275 55r 20 to a 295 55r 20 my shift points aren't going to be spot on with a bigger tire. Let me know what yall think I'm all ears and I apprecaite any information.
#2
Senior Member
So I have a new 2014 fx4 5.0 and I'm looking at keeping the stock 20's on it and getting a two inch leveling kit with 295 55r 20 nitto trail grapplers. My main question is, once I get my new tires and leveling kit how can I get my speedometer calibrated back to normal without using a programmer? I am new to the forum so don't spat me if this question has been asked before, I just couldn't already find a forum on it. I have heard that if you run programmers to recalibrate for this, it will void a warranty? I for sure don't want to go that route if that's the case but I have been told from a buddy that if you take it to the ford dealer they can recalibrate it to the size of the tire that I will be adding to it. Can somebody who knows more about this please help me out? I plan on getting a programmer later on once my warranty will be up but for now I wanted to see what my options are without it. I'm just sure going from a 275 55r 20 to a 295 55r 20 my shift points aren't going to be spot on with a bigger tire. Let me know what yall think I'm all ears and I apprecaite any information.
#3
Member
#4
Member
OP you may be able to have your local dealer reprogram the system to match your selection be it over sized tires, gear changes etc....
Your best bet and does not involve the dealer is to get a tuner, you can change everything related using it.
I also suggest you google search "Magnuson–Moss Warranty Act" < ammo.
Your best bet and does not involve the dealer is to get a tuner, you can change everything related using it.
I also suggest you google search "Magnuson–Moss Warranty Act" < ammo.
#5
Mark
iTrader: (1)
So I have a new 2014 fx4 5.0 and I'm looking at keeping the stock 20's on it and getting a two inch leveling kit with 295 55r 20 nitto trail grapplers. My main question is, once I get my new tires and leveling kit how can I get my speedometer calibrated back to normal without using a programmer? I am new to the forum so don't spat me if this question has been asked before, I just couldn't already find a forum on it. I have heard that if you run programmers to recalibrate for this, it will void a warranty? I for sure don't want to go that route if that's the case but I have been told from a buddy that if you take it to the ford dealer they can recalibrate it to the size of the tire that I will be adding to it. Can somebody who knows more about this please help me out? I plan on getting a programmer later on once my warranty will be up but for now I wanted to see what my options are without it. I'm just sure going from a 275 55r 20 to a 295 55r 20 my shift points aren't going to be spot on with a bigger tire. Let me know what yall think I'm all ears and I apprecaite any information.
#6
Fly or Die
The new tire circumference is the same. 295's are just wider than 275's, so no conversion is necessary
295 width 275 width
55R side wall depth vs. 55R side wall depth
20 rim diameter 20 rim diameter
both are 55R 20's you will have more rubber on the road with the 295's so you may experience a decrease in fuel economy.
295 width 275 width
55R side wall depth vs. 55R side wall depth
20 rim diameter 20 rim diameter
both are 55R 20's you will have more rubber on the road with the 295's so you may experience a decrease in fuel economy.
#7
The new tire circumference is the same. 295's are just wider than 275's, so no conversion is necessary
295 width 275 width
55R side wall depth vs. 55R side wall depth
20 rim diameter 20 rim diameter
both are 55R 20's you will have more rubber on the road with the 295's so you may experience a decrease in fuel economy.
295 width 275 width
55R side wall depth vs. 55R side wall depth
20 rim diameter 20 rim diameter
both are 55R 20's you will have more rubber on the road with the 295's so you may experience a decrease in fuel economy.
The '55' is a ratio, not a fixed number.
The 295 is a nominal 32.8" tall tire
The 275 is a nominal 31.9" tall tire.
Fire up ye tire calculator of choice to confirm fer yeseff.
To the OP: I concur wif the others, just go buy a good programmer (recommend SCT X4 with custom tunes). It'll help with the marginal power loss and recalibration concerns. Well worth it fer the shift strategy improvements alone.
MGD
Last edited by MGD; 04-08-2015 at 09:13 AM.
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#8
Mark
iTrader: (1)
Fuzzy Math...