Will larger rear tires hurt or help performance on my 06?

[dubba07]

I was told they will hurt my torque... is this true? Will my top speed be increased then? Just want to know your guys opinion. thanks.
<img src=http://myspace-410.vo.llnwd.net/00975/01/42/975232410_l.jpg>

 

[bigcat]

taller tires help top speed, but hurt take off speed. it changes your final drive ratio. it basically makes your gear ratio seem like a numerically lower ratio.

 

[dubba07]

What do you think the difference would be in the 1/4? if any?

 

[bigcat]

 

[bigcat]

i assume that you had a 5 speed with 3.55s. basically if this is true, it would be about the same as using the stock wheels with 3.34 gear ratio. (standard 05/06 automatic and 07 ratio is 3.31) it would slow you down a little. the difference would be in the tenths, so not a huge deal unless you are trying to get the fastest ET possible. but you could fix that with a gear swap.

if you installed 4.30s, the effective ratio would be 4.04, very similar to stock heigt tires with 4.10s.

 

[dubba07]

Thanks Bigcat. I appreciate it. I was thinking about going to 4.10s in the future. Now I guess I have to. lol

 

[millerc73]

I'm running 295/45-18s and they are 1.5 inches larger than stock. I have 4.10s and like bigcat said, my gears are like a 3.90 which is still a great gear for the street.

 

[paco_pony]

What do you think the difference would be in the 1/4? if any?

hard to say. taller tires reduce gear ratio but improve hooking. theoretically you could see big improvemetns with a taller tire if you can get better short times.

 

[paco_pony]

good info cat.

might also check the gear calculator link which allows you to change gears, tire specifics, wheel size and rpm and automatically see the speed.

www.speedshoppro.com/