Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > >
Forgot Password? Join Us!

Welcome to Ford Ranger Forum

Reply
 
Thread Tools Search this Thread

  #16  
Old 11-15-2009, 08:26 AM
Level2 Level2 is offline
Liking the Ford Ranger Forum
 
Join Date: May 2009
Posts: 21
Default

I used my Bama Chips Xcalibrator 2 to adjust my speedo when I went from the factory 31x10.5x15s to the 32x11.50x15s. Funny thing is though that my speedo has always been off no matter what. I set the speedo back to stock and it was actually pretty close but now that my tires are getting fairly worn it has become worse. With the stock speedo setting and my worn 32s my speedo reads around 5-6 mph off at 75mph---speedo reads about 80-81 mph this being checked with 2 gps unit simultaneously.
__________________
2004 FX4 Level II Ranger.
32x11.50x15 BFG A/Ts
Bama Xcal 2 programmer
K&N FIPK
Flowmaster 40 series single in/dual out with Magnaflow 3 1/2" stainless slash cut rolled edge tips
Zoom Kevlar Clutch
5 Spd. Manual
Leather Seats
Big sound system.
Reply With Quote
  #17  
Old 11-15-2009, 11:16 AM
TazDevil07 TazDevil07 is offline
Lyfted and Lovin It!!
 
Join Date: May 2009
Posts: 120
Default

I went from 31's to 33's and mine speedo reads about 2-3 mph faster.
__________________
Brenda
07 Ford Ranger FX4 Level II+
Toys: 01 Mustang Cobra SVT, 90 Mustang LX 5.0

Reply With Quote
  #18  
Old 11-19-2009, 02:21 AM
mb128 mb128 is offline
Member
 
Join Date: Oct 2009
Posts: 894
Default

Quote:
Originally Posted by STL View Post
A good tuner cost $400 - $600 dollars the axle I got was $500 dollars.

Re gearing at a shop is $1K dollars

I would call the local dealer and ask them. Probably wont be super cheap but cant be really expensive either
i got quoted yesterday about my truck getting regeared front and rear alittle over $1100
__________________
Muddin in the ranger, killin ricers in the f350

95 ford ranger 3.0 v6 side step 5 speed 4x4
mods: 6" bds sus lift, 33x12.5r15 bfg km2, expo OHC/expo power seats, full length expo console, 2 1/2" flowmaster super 44 cat back, 4 procomp 5" offroad lights, clear headlights and turn signals, 6k hid kit, 25% tint (fronts)

PNW CREW


Quote:
Originally Posted by Yrac View Post
Its a truck, you wanna go fast? Money = Horsepower!
Reply With Quote
  #19  
Old 11-19-2009, 12:01 PM
Fx4wannabe01 Fx4wannabe01 is offline
Ford Ranger Driver
 
Join Date: Sep 2009
Posts: 4,058
Default

Quote:
Originally Posted by TazDevil07 View Post
I went from 31's to 33's and mine speedo reads about 2-3 mph faster.
Nope Sorry. Try again. lol.



Go up in tire size, speedo reads SLOWER than what you're actually traveling. Same with odometer.
__________________
'01 XLT disguised as a '03 Fx4 Level II.
Reply With Quote
  #20  
Old 12-02-2013, 06:28 PM
NewShockerGuy NewShockerGuy is offline
2001 XLT
 
Join Date: Oct 2011
Posts: 1,164
Default Re: How do you recalibrate the speedo/odo for bigger tires?

Couldn't you simply take the needle off. Set the truck to go 60mph and verify with GPS then put the needle on?

Mine is off by about 5mph exactly and I was simply doing to that way. I did the battery trick when swapping the speedo and odometer but it's still off so I plan to just put the needle where the GPS is telling me how fast I am going, done?

-Nigel
__________________
_____

2001 Ranger XLT 2.3L Auto: Bunch of misc mods.
Little lift: 4" Spindle Lift w/ 2" shackles and 2" oem blocks.OEM Ranger Sport Wheels: Tires=245x75x16

~NSG~
Reply With Quote
  #21  
Old 12-02-2013, 06:34 PM
Logan03CO Logan03CO is offline
No wire hangers, ever!

 
Join Date: Jun 2010
Posts: 10,310
Default Re: How do you recalibrate the speedo/odo for bigger tires?

Quote:
Originally Posted by NewShockerGuy View Post
Couldn't you simply take the needle off. Set the truck to go 60mph and verify with GPS then put the needle on?
That wont fix it.

Well, I should clarify - it would be accurate, but for that one single exact speed. And only that one.

Its a percentage based deal.

The faster you go, the greater the numerical difference between actual & perceived becomes, but the percentage difference between them remains constant no matter the speed.


Another way to explain it: A persons speedometer isn't always 'x' mph off.... its actually always 'x' percentage off.
__________________
Curent 2003 Ford Mustang Mach 1 owner - Build Thread for her: Logan's 2003 Mach 1

Former 2003 Ford Ranger owner - Build Thread for her: Project Budget Buster

Last edited by Logan03CO; 12-03-2013 at 09:14 AM.
Reply With Quote
  #22  
Old 12-02-2013, 08:58 PM
cornhuskerranger cornhuskerranger is offline
Cornhuskeranger
 
Join Date: Dec 2012
Posts: 5
Default Re: How do you recalibrate the speedo/odo for bigger tires?

I just sent you a pm with tranny gear change info. (couldn't get it to attach here -- haven't posted too much, so may be my techno shortcomings.)
Anyway, I got this info from somewhere on the web a year or so ago. A gear change corrected my 225x70x14 to 235x75x15 to within a couple mph's - using gps.
__________________
1993 XLT Extended cab 4.0 L automatic stock except: explorer 15" alloys, Thrush muffler
Reply With Quote
  #23  
Old 12-03-2013, 09:12 AM
rwenzing rwenzing is offline
Some assembly required...
 
Join Date: Jun 2009
Posts: 890
Default Re: How do you recalibrate the speedo/odo for bigger tires?

The gear change method in the transmission/transfer case will not work on Rangers 1998 or newer.

For his 2001, he would need to reflash the PCM using an aftermarket tuner OR install a speedo correction box.
__________________
2003 FX4 Level II, Supercharged 5.0L V8, Headers, Duals
BW4406 manual transfer case, Aussie Locker, Torsen L/S, 4.10's
Bilstein 7100 rezzies, Cadillac/Mustang rear discs, Duff traction bars
Keypad Entry, Lock LEDs, ABS switch, sway bar discos
Heated seats, Explorer EATC, Trip Computer and consoles

2003 XLT 2.3L M5OD-R1 reg cab, 2011 Taurus SEL, 2016 C-MAX Energi Plug-in Hybrid
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
1996 ranger in need of new/bigger tires Tim Perry Wheels and Tires 5 07-18-2011 04:27 PM
No wiper,speedo,airbag,dome light swederod Electrical Tech 5 06-14-2010 11:18 AM
Bigger tires brannonmetal Wheels and Tires 3 11-05-2009 03:06 PM
Bigger Tires? lessiseric27 Wheels and Tires 17 07-24-2009 07:36 PM
Bigger tires on Ford ranger? That one guy. Wheels and Tires 1 11-30-2008 01:44 AM