Taller tire have more centrifugal force because they have more mass (weight). A body in motion tends to stay in motion. They also have a larger outer diameter therefore through all the weight to the out side of the tire. requiring more energy to accelerate and more energy to slow down than a smaller tire at the same speeds. This is why I would recommend up graded in your brakes and also lowering your gear ratio( numerically higher) if you are going to larger tires. A lower gear ratio will act as a torque multiplier which will get you moving faster up to speed and also adjust your speedometer to be more accurate.
When you go to larger tires your speedometer will be inaccurate because taller tire have large outer diameter. A taller outer diameter tire will travel farther per revolution than a smaller tire. This cause your engine speed to be lower with taller tires because your vehicles tires are moving slower do to it larger outer diameter.
There your vehicle can be re calibrated through the computer. 4wheel parts offers parts call true speed sensors which also recalibrate your speedometer accurately that is the way i would go. Also maybe up grade to larger master cylinder off a 1 ton Chevy and go with some drill and slotted rotors. You most likely will have better braking with these upgrades than you would stock. keep it safe!
Good luck and have fun.
Billie17: my best suggestion would be to check with places which specialize in the sales of 4WD modification kits.
I think there is a lot more involved than the recalibration of a speedometer. I know with the Ford, because the speedo drive gear is in the differential, you can make all kinds of gearing changes and the speedometer will read correctly. With most other vehicles, any changes, whether they be gear ratios or wheel and tire sizes, all will affect the accuracy of the speedo. I think the corrections may be made by changing out the speedometer drive gears which are in the tail housing of most transmissions. By adding or subtracting the number of teeth to the gear, will compensate for some changes. I know that Nissan has a variety of drive gears which can be changed out to affect the speedo accuracy.
I hope I may have shed some light on the subject.
Your speedo will be way off.......... and your brakes will have to work much harder.
I am happy you have considered these safety issues , lots of guys would just go..... Cool , big *** tires dude awesome.
474 views
Usually answered in minutes!
thnks guys.....yesterday i was searching for a "lift kit" and i think i will get one of those....instead of the cab mounts..since they will only give me like 3 inch lift.....and the lift kit will give me lot more....
i have made a huge list of new parts...the lift kit is like $1999 dollars and tires will be like $300 each....and i am going to buy awesome rims too. "i will be thinking on getting them "crossdrilled rotors" and maybe upgrading my "drum brakes to disk with a "drum to disk conversion kit"
i wont be messing with the transmission yet....i have a NV4500 its awesome plus it has alot of power.....i would change it maybe for a turbo 400 but i will wait until i get a 454......THANKS ALOT I REALLY APPRECIATE YOUR HELP....I WILL SOON GET MY LIFT KIT....THANKS...! xb
ESP 80 AMP FUSE WOULD IT HURT TO USE A BIGGER AMP
×