Use lower profile tires-Speedo & Millege diff?

[Kooler]

I'm using 15' 195 55 tires for my Lancer and would like to change to profile 50 for my next tire change,I noe that it's not the correct profile and speed and millege readings would be affected.

 

But I would like to know when I switch from profile 55 to profile 50.Would the speed readings be over stated as in indicating I'm travelling at 100km/hr when I'm actually doing 110km/hr?

 

Oso will the millege counter under or over report the actual distance travelled?

 

Last is would the discrepancy be a lot from original readings?

[Dtvox]

This would help...

 

http://www.paspeedo.com/calculator.htm

[Soya]

not juz odo is off but yr autobox shift points too.

[Fortress]

hi, if you changed from 55 to 50 without changing to 16", you are actually travelling faster on the speedometer but in reality you are slower. Therefore, you have a higher mileage in terms of the distance but actually travelling much less about 10% less...interesting isn't it...

Edited September 2, 2005 by Fortress

[Seaweed]

if downsize ....for same rpm...you actually travel less distance...because for every 1 turn...due to the reduce in diameter of tyre...you cover less distance....upsize...diameter of tyre increase....so for every turn....you cover more distance....ha ha ha.....so where have you been to never see you in forum for the past one two days ??

Edited September 2, 2005 by Seaweed

[Fortress]

Why, you miss me...., been travelling and will be away next week too.

 

It is a simple calculation on Perimeter of the tyre. 2 X pie X Rad, if Radius is reduced then Perimeter is less. Interesting isn't it....

[Seaweed]

ha ha...so where you going to ?? i going bkk on 8th...still need me get the thing for your son ??

[Fortress]

Going to Vietnam....will send you a private message on the takeaway.

[Seaweed]

viet ?? HCM or Hanoi ??? business ??

[Fortress]

HCM....anything you need to get...except the girls on the mopeds

[Seaweed]

ha ha...no lar...nothing in mind to get there....one of my fren just went over there to work recently....

[Fortress]

what is he or she doing there.....