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Old 04-19-2014, 07:22 PM   #1
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Default Tire truing?

So I'm trying to understand the tire aspect of nitro. I have found that you need to true the tires to be competitive. I have found you need to run a split on the tire. Im running a 2mm difference from rear to front. Where the fronts are smaller than the rears. How come you you run the offset. To have the trot tires spin faster so they help pull the car threw the corners?


Also should i retrue the tires after every race or just leave them alone??

Im just trying to understand this
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Old 04-19-2014, 11:15 PM   #2
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From your signature I'm assuming your running 1/10 200mm. The 2mm split is basically used to give a slight bias to RWD and increase top end. Through the corners when the rears start to spin the front catch up and you get full 4wd. This is much more pronounced in 1/8th scale where you run 6-7mm split.

Just true them at 62mm rear and 60mm front and then leave alone. Just swap left and right side tyres over after each run to even out the tyre wear. You can also true a little camber onto the tyre as well. Probably about 1 degree that just helps the tyre be closer to the cars suspension geometry so the break in time will be less.
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Old 04-20-2014, 04:10 AM   #3
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Be aware that also the internal transmission to the rear and to the front are not equal. With the 2mm split you do come close the the same roll out on front and rear.
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Old 04-20-2014, 06:51 AM   #4
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yea i run the 25t gear on the nt1 for the front side gear for overdrive. so splitting the tires brings the car back to 4wd from the internal split difference of the car?
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Old 04-20-2014, 06:53 AM   #5
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2mm split in 1/10 generally gives even drive to both front/rear wheels, which is good for 4WD with diffs front and rear you see in 200mm touring cars.

7mm split in 1/8 gives about 0.5-1.5% over drive to the front, which works well with the solid axle/one-way setup in 1/8, gives 4WD on power, and lets front tyres free wheel off power, which gives the turn in/rotation of a 2WD car, but traction of 4WD under acceleration, best of both worlds, sacrifice is only rear wheel braking.
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Old 04-20-2014, 07:00 AM   #6
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well if i don't run the 25t pulley on the car and have the car at 4wd not a split then y true the tires at a split then??
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