Drag Racing yaris 15.969

[428CobraJet]

That's good....i see you're running 17 in tires. Is the diameter different from original? Ie...change in gear ratio?

[ivanstepul]

Originally Posted by 428CobraJet

That's good....i see you're running 17 in tires. Is the diameter different from original? Ie...change in gear ratio?

actually when I ran the quarter I had 15 inch rims with stock size tires 15/65/185 but the tires were really nice they were the altimax rt tires

[ivanstepul]

Originally Posted by 428CobraJet

That's good....i see you're running 17 in tires. Is the diameter different from original? Ie...change in gear ratio?

no change in gear ratio stock trany

[CrankyOldMan]

Originally Posted by ivanstepul

no change in gear ratio stock trany

If your tires are a different diameter than stock, it changes the effective great ratio. It's an easy way to get more torque without tearing your gearbox apart.

[ivanstepul]

Originally Posted by CrankyOldMan

If your tires are a different diameter than stock, it changes the effective great ratio. It's an easy way to get more torque without tearing your gearbox apart.

I'm not a science expert but there is more torque if the rim/tire is a smaller diameter right?

[CrankyOldMan]

Originally Posted by ivanstepul

I'm not a science expert but there is more torque if the rim/tire is a smaller diameter right?

Correct. You can always trade torque for speed by going larger, and vice versa.