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on will they fit it says at 60, reading should be 59.61
on tire-size-conversion say at 70 reading is 70.3??
Both show new tire taller by ~ .5" or 13mm.
So is what I see on speedo really faster or slower than I'm going.
I realize I can't tell half mile per hour diff, but what is it?
I know, thanks for the links. Already used 2 hence what I stated above.
My question is Which is right.....I ran 2 different calculators and got 2 different speedo readings!
One slower and one faster??
So 1010 show actual of 62.14 then new tire 62.54.
SO now 2 sites say what i see on speedo is actually 1/2mph slower than I am actually going. Does this sound correct for a new taller tire. Speedo reads slower than actually going?
But you know, it doesn't matter. There's like a 0.65% difference between both. You'd see 60mph on your speed you're actually be going 59.61mph... 150mph? 149.025mph haha
this statement and calculator contradicts 1010 & will they fit and what you both just stated?
It says a taller tire is actually going faster than speedo reading?? Ahhhhh what the heck!
"....Your speedometer is reading how many revolutions your tires are making not how fast they are spinning. When you go to bigger tires the circumference of the tires is larger, meaning the distance around the tire is longer. Thus, with each revolution you are traveling further than before. Therefore your actual speed is higher than your speedometer reads. Or lower if you have gone with a smaller tire then stock."
But you know, it doesn't matter. There's like a 0.65% difference between both. You'd see 60mph on your speed you're actually be going 59.61mph... 150mph? 149.025mph haha
I know, but just trying to wrap my head around this in layman terms.
If the overall wheel & tire diameter is bigger than original, at the same number of revolutions you will travel more distance, therefore your speedometer will show a certain number (calculated at number of revolutions) but you will be travelling more distance therefore FASTER. This is exactly the opposite of my previous 2 posts and also justn post.
this statement and calculator contradicts 1010 & will they fit and what you both just stated?
It says a taller tire is actually going faster than speedo reading?? Ahhhhh what the heck!
"....Your speedometer is reading how many revolutions your tires are making not how fast they are spinning. When you go to bigger tires the circumference of the tires is larger, meaning the distance around the tire is longer. Thus, with each revolution you are traveling further than before. Therefore your actual speed is higher than your speedometer reads. Or lower if you have gone with a smaller tire then stock."
Originally Posted by blownby
I know, but just trying to wrap my head around this in layman terms.
Smaller =X- or x+
larger = x+ or x- in general
That is exact. Disregard my previous posts. Somehow messed up my logic here.
A taller tire than OEM means speedo reads slower than your going....ie your going FASTER than 60mph when seeing 60mph
A shorter tire than OEM means speedo reads faster than your going...ie your going SLOWER than 60mph when seeing 60mph
"....Your speedometer is reading how many revolutions your tires are making not how fast they are spinning. When you go to bigger tires the circumference of the tires is larger, meaning the distance around the tire is longer. Thus, with each revolution you are traveling further than before. Therefore your actual speed is higher than your speedometer reads. Or lower if you have gone with a smaller tire then stock."
A taller tire than OEM means speedo reads slower than your going....ie your going FASTER than 60mph when seeing 60mph
A shorter tire than OEM means speedo reads faster than your going...ie your going SLOWER than 60mph when seeing 60mph
"....Your speedometer is reading how many revolutions your tires are making not how fast they are spinning. When you go to bigger tires the circumference of the tires is larger, meaning the distance around the tire is longer. Thus, with each revolution you are traveling further than before. Therefore your actual speed is higher than your speedometer reads. Or lower if you have gone with a smaller tire then stock."
Yes that's once again exact. Sorry for all the confusion!
In your example though it does not matter at all since the variation is not even 1%.
08-05-2015, 11:52 AM
