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  • 2005 - 2014 S-197 Mustang -General/Talk-
  • 2005 - 2009 Specific Tech

speedo sensor question

  • Thread starter Thread starter ArangeAstang
  • Start date Start date Jul 12, 2005
A

ArangeAstang

New Member
May 14, 2005
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Jul 12, 2005
#1
  • Jul 12, 2005
  • #1
is the speedo/odom. sensor located on the rear tires, or the fronts on the 05? The reason i ask is because im wanting to get new wheels and tires, but i need to know if i can get some bigger meats in the back, or if i have to run the 255/45/18s. Thank you.
 
N

nbk13nw

Member
Mar 31, 2005
186
4
19
Newport News, Va
Jul 12, 2005
#2
  • Jul 12, 2005
  • #2
ArangeAstang said:
is the speedo/odom. sensor located on the rear tires, or the fronts on the 05? The reason i ask is because im wanting to get new wheels and tires, but i need to know if i can get some bigger meats in the back, or if i have to run the 255/45/18s. Thank you.
Click to expand...

You can get bigger tires and wheels. But if you go larger than stock it will present issues to the ECU and speedo. An SCT or Diablo tuner can take care of that issue fairly easy. But if you dont want to go that route (Tuner) then be sure to think about the wheel and tire size. You can go up on the wheel diameter a bit and then go smaller on the tire height in order to keep it at or close to fatory height. I think the overall height is 27 inches from ground to top of the tire. Someone please corect me if I am wrong.
 

fin1

New Member
Mar 30, 2005
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Jul 12, 2005
#3
  • Jul 12, 2005
  • #3
nbk13nw said:
You can go up on the wheel diameter a bit and then go smaller on the tire height in order to keep it at or close to fatory height. I think the overall height is 27 inches from ground to top of the tire. Someone please corect me if I am wrong.
Click to expand...

You are correct. The stock diameter (245/55-17) is 27.61 inches.

These sites can give a good idea of how rim & tire combo will work out (speedo & clearance changes).

http://www.miata.net/garage/tirecalc.html
http://www.1010tires.com/TireSizeCalculator.asp
http://www.1010tires.com/WheelOffsetCalculator.asp
 
J

joshman1204

New Member
Oct 4, 2004
118
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Jul 12, 2005
#4
  • Jul 12, 2005
  • #4
The speedo sensor is not actually on the front or rear "wheels" it is a combination of driveline sensors that calculate the speed.
 
G

gp001

Founding Member
Jun 30, 2001
4,401
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66
So. Cal.
Jul 12, 2005
#5
  • Jul 12, 2005
  • #5
To calculate tire diameters you can use the formula:

Sidewall = [ Tire Width (in mm) * Aspect ratio ] / 2540

Tire Diameter = (2 * Sidewall) + Rim Diameter

Ex. Stock tire 235/55-17

Sidewall = 235 * 55 / 2540 = 5.09

Diam = (2 * 5.09) + 17 = 27.18 in
 
A

ArangeAstang

New Member
May 14, 2005
11
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0
Jul 12, 2005
#6
  • Jul 12, 2005
  • #6
Thank you guys very much, I truely apprecaite all the replys. I'll be sure to post some pics when I get the wheels and tires installed
 
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