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Old 12-03-2009, 09:56 AM
RoadDawg RoadDawg is offline
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Default Tire size calculator...

FYI for those who want to know about the specific data reference to those new bigger monster donuts and just how they will effect your speedometer as compared to the stock size (OEM) tires...


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Black 1999 Supercab XLT, 4X4, 4.0, 5 Speed, 410 posi-gears, 33 inch BFGs on 16X10 American Racing Aluminum Wheels, Extang low profile tanau cover, Factory Class III Tow Pack.
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Old 12-03-2009, 11:39 AM
dixie_boysles dixie_boysles is offline
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Dang, i was wanting to go up to a 32, but now i dk! It'll make the speedo off my 4 miles an hour! i dont know how much it cost to calibrate it wither, or can this be dont at home?
2014 F150 SuperCrew XLT 4x4
275/65/17 Falken Wildpeak AT3W | Shorty Antenna | Tinted Windows | ProClip Phone Mount |5.0 v8 |Tow Package | Oxford White

Sold/Totaled: 2006 Ranger XLT 2D SuperCap 4x4 Torch Red
15x8 Pacer 164P Polished Wheels | 31x10.50 BFG ATs | Level II Tow Hooks | FX4 Red Insert Seats
Tinted Windows | 6000K HIDs | Kobalt Low Profile Toolbox | Pioneer Speakers
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Old 12-03-2009, 11:48 AM
STL STL is offline

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dealer can recalibrate or if you bought a tuner you can correct the tire size
2005 Edge

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Old 12-03-2009, 12:57 PM
surfer03133 surfer03133 is offline
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lol that explains my speeding ticket. i havnt recalibrated my speedo yet, its off by 8.64%. on the plus side, im getting like much better mpg than i thought
08 Ranger Sport 2wd
aFe CAI, 30x9.5.x15 Grabber AT2s, U/D pulleys, flowmaster super 44

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Old 12-12-2009, 01:15 AM
ec_dago_ryder ec_dago_ryder is offline
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wait so if i got 31's or 32's it would show im oging slower then i really am right? how much?
08 Ford Ranger 2.3l
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Old 12-12-2009, 01:37 AM
mb128 mb128 is offline
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i jumped from 30x9.50's to 33x12.50's and mines off by 5 mph (had my mom run next to me hers is dead on) i dont no if that helps any
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)


Originally Posted by Yrac View Post
Its a truck, you wanna go fast? Money = Horsepower!
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Old 12-12-2009, 10:04 PM
Dang Dang is offline
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Join Date: Dec 2009
Posts: 76

I had no idea it would make such a difference....
Am i getting better gas mileage then I thought if my tires are larger then stock?
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