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

 

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

 

Buy a GPS unit

 

X2 on the GPS

 

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

 

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

 

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

 

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.

 

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

 

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

 

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

 

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.

 

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