gear/tire wizzard transrev/mile incorect or?

[Jnkshit69]

auto scaled 32.59 tire 3.73 gear and thats what it gives me for transrev/mileScreenshot 2025-04-05 070800.png ... but my math is telling me its 2308.5343 am i wrong?

[Acrosteve]

I dont quite understand your question.

But ive got a similar, or related question. I've entered the data from my vehicle accurately, but the speedometer is off.

Where is the best/simplest place to correct this? I don't remember anywhere that just lists something simple like a speedometer correction factor.

My actual speed is lower than indicated. So just fake the circumference numbers? Or just change the rear end ratio?

[Alvin]

The tire sizes aren't 100% what they calculate out to be.

do this

(GPS speed / Indicated Speed) X Current tire size = New tire size

[RDF1]

I dont quite understand your question.

But ive got a similar, or related question. I've entered the data from my vehicle accurately, but the speedometer is off.

Where is the best/simplest place to correct this? I don't remember anywhere that just lists something simple like a speedometer correction factor.

My actual speed is lower than indicated. So just fake the circumference numbers? Or just change the rear end ratio?

Dont mess with gear ratio.
Just figure out your difference of actual speed vs gps speed and change ECM 9000 till your happy with the results.

[04silverado6.0]

Some os it does fine. Most i am putting in 1.5-2.5 inch smaller diameter.