80mph is @ around 4000 rpm for me

look for my thread is like on pg2 or 3

 

Not sure how you're doing your math but 0.4/23=1.74% and 0.4/23.4=1.70% if your other numbers are correct.

 

This gives you a circumference difference of 1.8%.

 

using revolutions per mile for my % calculation.

 

@ 60mph - 3K rpm
@ 70mph - 3.5k rpm
@ 80mph - 4k rpm
@ 90mph - 4.5k rpm
@ 100mph - 5k rpm

These are rough estimates and is what I noticed when I speed, bob and weave through traffic or running away from CHP.

 

OP the easiest thing to do is go try the car out on a hiwhay near you. We can all say how the car isn't loud even going 80mph but the reality is you need to experience it for yourself.

Let us know once you've test driven one how you feel about engine noise.

 

Must be rounding error, my calcs come out the same as I previously posted (as should be expected because this is all simple math):

pi=3.14159, mile=63360 inches

23.4" tire circumference = 73.51", 23" tire circumference=72.26"

23.4" tire revolutions = 861.92, 23" tire revolutions 876.83

Difference = 14.91 revolutions

Still equals 1.7%

 

my base mt fit hits 3k at 60mph, 3.5k at 70mph and 4k at 80mph

 

similar to me...so you must have a manual sport FIT?!

 

Tire size calculator

Actual circumfeance on Base fit is 72.1"

Sport is 73.7

Either way really, it's only about 50rpm difference. at 70MPH

 

the motor trans is the same for sport and base.

 

nah i just have the base model mt fit. no ground effects and hubcaps but i still love it..like drivin a kickass go cart lol

 

Because I'm in the highway a LOT.. usually I get up to 90mph (florida I-75).. and my Sentra at that speed does 3300rpms and it's very quiet even though all the insulation has been removed. I'd really hate having the engine revving at ~4500rpms every day during all the time I'm on the highway..

 

Did you not see the part where all of us said it's still quiet? You use almost no throttle at all at highway speeds, the engine could be at 10,000rpm but with 5% throttle you're not gonna hear it.

 

well i don't find my fit to be loud. The only thing that i was dissapointed in is the fact that the gas mileage is so bad at 70+ But thats my fault because i didn't take that into consideration when purchasing the car. Also i didn't think that getting the base would be that big of a deal but now i wish i had spent the extra just for the damn cruise control.