In case you're trying to figure your actual speed and you don't have a GPS, find a road with mile markers, and keeping steady speed, time the mile with a stopwatch and divide this number into 3600 ( the number of seconds in an hour). I do this with the semis I drive and they're usually off by 2mph or more.
"clocking" your speed
- Thread starter 5spd'r
- Start date
Plutonium Jones
Well-Known Member
great use of those math skills
im sure you know it though, but its gonna be off...so just do averages to make sure
im sure you know it though, but its gonna be off...so just do averages to make sure
jdm00accord
Well-Known Member
man my gps says me spedo is off by 5mph..seems like alot.
Are your rims and tires upto appropriate spec?
Sketch o5
Señor Greengo
my speedo is off and im on stock wheels and tires haha. speedos are hardly ever accurate.
jdm00accord
Well-Known Member
im pretty sure everythings right but idk anything about rim or tire sizes i have 16" rims and i assume the shop runs the appropriate tires for my rim size. ive been running the same style bridgestone insignias for like 3 years. i figured my spedo wouldnt be dead on or anything anyways. but atleast the gps tells me my speed.
edit: oh and the gps reads exactly 5mph UNDER what my spedo tells me
rather be safe then sorry.
jdm00accord
Well-Known Member
i mean i dont speed or anything, my kids in the car with me more than half the time so i dont really consider this to be a problem.
TheHunter
Well-Known Member
I prefer the speedo to say higher than what you're really going. That way I'm less likely to really speed. (Going 5 over is actually just going the speed limit!)
