Trustyrusty

Hey, I'm putting 33's on my truck soon, and was wondering how do I correct the speedometer back to the correct speed?

norcalsvx

33x10.50's and 4.88's it will be right at stock

dirtoyboy

Buy a GPS unit

toyotatom93

X2 on the GPS

ozziesironmanoffroad

X3 on the GPS... but there are shops that recalibrate speedos.

shaw_j

If you can't afford to buy a GPS unit or re-gear your truck:
http://www.1010tires.com/tiresizecalculator.asp
that is for you. I have (thanks to college tuition fees) a little chart in my truck taped up so that I can have the correct speeds visible.
When my speedometer says 85 km/h, I am going 100 km/h

Trustyrusty

I didn't think about gearing.... Im an idiot...

RobD

Mine actually read slower than actual speed. When I upgraded to 33" tires, it actually reads bang on now. Thing is, my odometer now reads lower than actual.

gte718p

Thats not working so well on my 87 5speed. I'm reading a good bit low. Maybe with the auto. I second GPS. GPS go for 100 bucks these days. Invest in it

crawyota

Ok Here Is The Dumb Quetion Of The Day , What Does The Gps Do????

dirtoyboy

Almost every GPS unit sold today can tell you your exact MPH...many can do it to the tenth or hundredth of a MPH

YeloSub7

in my experience, when you throw an auto into the mix you usually have to step up to the next gearing set. So 31=4.56, 32=4.88, 33=5.13. That is why some toyotas came with 4.56 or 4.88 stock gearing, its those with auto tranny's and 31'' tires as the factory setup.

norcalsvx

yea its the auto, i've gps it and its pretty close (1-2mph off)