New tire size speedometer correction w/ HP tuners

[Blizzard242]

I believe I'm suppose to take the height of my installed tires which is 275/40R17 and divide that by my gear ratio. I looked up the height in inches on some other forum of the tire size and divided that by my gears.. 3.08 and got something like 8.33 I think the stock tire sizing was 8.22 But.. Do I just enter that into the New tire/gear box and hit commit? Is it that easy?

[ssms5411]

Re: New tire size speedometer correction w/ HP tuners

Yes it is, if auto it will do all your shift points for you too. So you just have to enter the # you got, mines 6.89 with 3.73's and 275/40/17's.

[Mr. Logger]

Re: New tire size speedometer correction w/ HP tuners

HPTuners also has a calculator that will figure out your tire height in inches, so you don't have to check other forums. It's called the Conversion Table or something similar.

[Blizzard242]

Re: New tire size speedometer correction w/ HP tuners

Yes it is, if auto it will do all your shift points for you too. So you just have to enter the # you got, mines 6.89 with 3.73's and 275/40/17's.

Good, I think I got it right. I'll find out next time I get pulled over.

HPTuners also has a calculator that will figure out your tire height in inches, so you don't have to check other forums. It's called the Conversion Table or something similar.

That would have been nice to know earlier. And don't worry, I may visit other forums from time to time but camaro/firebirdv6 will always be number 1 in my heart.

But really though, thank you. I didn't know it was in there, i'll go check it out right now.

Edit: I found it. Thank you again, that thing is awesome.